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H: Verilog code question
I'm new in Verilog and I need to create a module that when Entry=1, it will increment 5'b000100 in the "Money" output.
This is the code that I made, but it's not working properly. The program it's not storing the total of the money(that's what I want my program to do).
For example,
Everytime ... |
H: Why is it safer to place a switch on the positive side of a voltage source?
According to the research I've done, it is safer to place a switch on the positive side of a voltage source:
http://www.allaboutcircuits.com/textbook/direct-current/chpt-3/safe-practices/
This only makes sense to me visualizing the circu... |
H: Minimum and Maximum temperature for a copper wire to work?
Is there a minimum and maximum temperature that a copper wire/s will still work on. Meaning that current will still be able to go through them. Let's say that I have battery that is heated or cooled depending on the environment, and that battery controls a... |
H: Dealing with signal noise over 50 foot communication link
Situation: Connecting a motor controller to an MCU. Motor controller is about 50 feet away from MCU. Connected via a single conduit (buried), containing the following cables: (There is no other electrical equipment in the area, and this is outdoors between... |
H: Conditioning a voltage using constant current for an ADC range
I wish to make a set of temperature measurements inside a relatively inaccessible box.
The measurements can be made using Pt100 sensors - platinum Resistance Temperature Detectors (RTD) with a resistance of \$100\Omega\$ at \$0^{\circ}C\$. The change i... |
H: Digital vs Analog signal for data transfer across boards
I have 1 board that reads data from a sensor, while another board wants to get data from that sensor.
Is it better to have an ADC on the first board, then send that data via i2c to the 2nd board? Or is it better to send the analog signal from the first board... |
H: What is maximum supported RAM for Snapdragon 410?
Qualcomm Snapdragon 410 datasheet says:
Memory
+ LPDDR2/LPDDR3@533MHz
+ eMMC 4.5
+ SD 3.0 (UHS-I)
It does not talk about maximum amount of RAM supported. What is the maximum amoount of RAM this processor supports?
AI: 2GB is the answer. Look at the memory... |
H: Confusion on the meaning of a BJT emitter follower's output impedance
Above figure is a BJT transistor emitter follower.
I can understand that in an emitter follower when talking about its input impedance what meant is Vb/Ib and here it is equal to (hfe+1)*R. The idea I think similar to Thevenin equivalent. The vo... |
H: Where does current go in these circuits?
In both these schematics, the 9V source drives current through the circuit, but there doesn't seem to be any way in which the current can 'return' to the source to complete the circuit. In what ways would current flow through both these circuits from the DC source, and where... |
H: Why do DRAMs retain their state better when they are cold (when powered off)?
I'm sorry if this is off-topic. It may be better suited for a computer hardware forum, but I couldn't find anything appropriate.
I've been reading about the cold boot method, which can be used in forensic investigations, by enemy governm... |
H: Single cell e-ink type components?
I'd like to make my own binary watch, and something pretty small. Using surface mount LEDs would work but they use a lot of energy (~30mA a piece for something I'd consider reasonably bright) so there'd have to be a mechanism to "show the time".
Instead of this I'd like to only up... |
H: Connecting multiple grounds
As I'm relatively new to the electronics world, I was wondering if you can connect multiple ground terminals (corresponding to several different voltage outputs) to the same ground. Or do they each need their own?
In my case I have 5 lines, one 12V, one 3.3V, two 5V and one variable fro... |
H: What is "rabbit ear" in a video-capture context?
I was reading the TVP5158 datasheet, and ran into a register bit that would enable "rabbit ear". What is that?
AI: This patent refers to "rabbit ears" as distortions in the video sync pulse. You can see why they're called that from the shape below.
http://www.patentg... |
H: CATV Voltage Levels
What are typical and maximum allowed voltage levels at a CATV coaxial cable?
Looking at some datasheets for GDTs and some Coaxial Surge Arrestor manuals I'm seeing a big range of breakover voltages, ranging from 27 to 300 VDC.
AI: According to "the Real Cable Guy":
To measure a particular CATV ... |
H: Why don't interfering radio stations both play at the same time?
Since radio-waves are additive, I would expect that overlapping stations (eg. two different signals broadcasting on 95.7 within range) to both play over my radio at the same time.
But that's not what happens. Instead, I hear only one station at a tim... |
H: Auto-charge 8.2V Lithum-ion battery pack
I am planning a device consisting of a load, a battery, and an external power source.
The idea is that the battery powers the system until the external power is plugged in -- then, the external source provides the power and charges the battery.
I am working with a 8.2V batte... |
H: Making a wireless clicker to use in presentations, suggestions?
I will be needing a wireless remote/clicker of some sort to use when delivering presentations for projects and assignments (i.e. Powerpoint type). Yeah, I can buy one quite cheap - but really, what fun is that?
The first thing which comes to my mind is... |
H: How do I write KVL in this circuit?
I am studying this circuit in my course:
AB is opened, E1 = E5 = 10V, E4 = 40V, R1 = 2 Ohm, R2 = 4 Ohm, R3 = 6 Ohm, R6 = 6 Ohm
I want to write KVL for the Loop 1, what I do usually is defining the voltage drops polarity across each element (resistors in this circuit) but here I ... |
H: Does an Electron really travel thousands of Miles when I use a server in another Country?
When I press a key on my keyboard, it will alter the flow of electrons in a wire connecting to send data to my computer. Let's say it sends the bits: 100000000100000000100000000100000000, which is a few letters encoded in bina... |
H: Charging capacitor bank with current limiting circuit
I would like to charge a capacitor bank with a 4.8 volt supply that I have. With the help received in response to this question, I now have a a useful current limiting circuit (shown below), that allows me to select a maximum current through a load. I have reimp... |
H: Understanding CS5463's basic circuit power supply
I'm trying to put the CS5463 chip functional using the example circuitry on page 41 of the datasheet (attached bellow):
Right now, I'm working on the top part of the circuit, which is the IC power source. I've ran some simulations on Multisim and, apparently, this ... |
H: Is this an RC filter?
I'm trying to understand this temperature sensor circuit I came across on a room Air-Conditioner controller (Want to build one myself).
The sensor is an NTC type thermistor (15k at 25 deg C). What I collect is that the NTC along with R2 form a voltage divider, the output of which is fed into ... |
H: Center tap vs. bridge transformer
I'm designing a power supply to deliver 6V DC with a zener diode acting as the regulator. I found out that there are two types of transformers that can be used. They can be center tap or a bridge. In center taps, we will use 2 diodes, while in bridge, we need 4. What are the pros a... |
H: What is high side current limiting?
What is high side current limiting? While google searching for the term I have found ICs that describe their application as "high side load switching". Is this the same thing or something utterly different? Furthermore, the term implies that there is low-side current limiting als... |
H: Designing a power supply (zener) to achieve steady 6V (\$\pm\$ 0.01)
UPDATE: My target is to obtain 6V as the voltage output. As you can see, it is 5.94 V. I've tried adjusting my variables, yet it varies from 5.6 to 5.94V, never having reached 6V. What would be the best way to make it real close to 6V \$\pm\$ 0.01... |
H: Can I Stack these two Arduino Shields?
I am using an Arduino uno currently with the Si4735. I can not currently get the audio from this shield to the Arduino or other sources without using the 1/8 jack. To fix this I am thinking about adding another shield with the functionality I need that has an audio in and au... |
H: How to do pulling up or down correctly when interfacing a microSD card?
I have seen people pulling up only the CS pin, so that when the microcontroller's pins are floating in the power-up, the microSD card is not corrupted.
Also, I have seen many people pulling up and down DI,DO and SCLK lines.
Some of the circuits... |
H: Designing a GSM PCB antenna
Before someone complains about my crappy design I should tell you that my knowledge on antennas or RF is near zero.
I recently worked on a project that required a GSM module. After testing it on a PCB using an external antenna that apparently seamed fairly simple, I made a new PCB with a... |
H: What shift register ICs am I looking for?
I'm designing a project that requires far more I/O than a typical microcontroller offers. No problem, right, just use shift registers and stuff. Wait nope, why am I having problems?
I'm planning on driving 24 outputs with one serial data line, a clock, and a chip select. 16... |
H: Understanding electric DC gear motor for project
I would like to build an Arduino controlled coin sorter and counter. I want to use a spinning angled disk with holes in them to pick up individual coins.
I have been looking at some 3V DC geared motors on Ebay. I understand that high torque will be important so that ... |
H: Programming languages for electronics engineers
I am an Electronics and Communications Engineering student, before I got to college, I have been interested in programming and computer applications. I had focused on designing Windows applications and learning its techniques, but now, I feel that this is useless in m... |
H: 'Voltage Fuse' or better
I have a power supply with multiple outputs (5v, 12, 24v)
According to the manufacture (and after testing) there must be a minimum load on the PSU for it to supply the stated voltages. Without a minimum load the voltage can go up to 37V (which is very bad)
As I can't garentee that the syste... |
H: Conductive Lubricant for Connectors?
I'm making a safety disconnect for an experimental RC craft. It will be tethered to the ground, and if it goes out of control the tether will pull a plug disconnecting the power. I will make the plug from a male Deans connector (pictured below) looped to connect the positive a... |
H: Finding capacitors with low soakage (dielectric absorption)
This technical note from Analog Devices indicates that low dielectric absorption is a prime requirement for choosing a capacitor for a sample-and-hold circuit (see page 11). It also suggests to look for capacitors advertised as low dielectric absorption.
... |
H: Detecting the placement of my finger on an invisible grid
Yes, a similar question was asked before, but mine is different. Let me explain what I am thinking of.
Suppose I have an invisible 3 x 3 grid on my desk, is there any way I can detect which square I place my finger on? To clarify, when I say invisible, I mea... |
H: Why not run high power truck-mounted electronics from the truck's engine?
At Burning Man, I see a lot of "art cars" based on internal combustion engine platforms using generators separate to the original vehicle's engine to power their LED displays and sound systems.
Why do they do this? A typical truck engine migh... |
H: Questions about heterodyne receivers
All radio receivers seem to use the heterodyne principle. I can see that it will be easier to work with a fixed frequency than demodulating from a wide range. Questions:
what's the difference between heterodyne and superheterodyne
what does a double-superheterodyne add to t... |
H: DC-DC Up-Conversion without Switching Electronics
I have a project where I am trying to find a means of powering a sensor with the following requirements: 24-30 V and a regulated constant current of 2 mA (about 60 mW). The latter requirement I will handle with a constant-current diode.
The source power will come fr... |
H: 24 channel PWM IC
I wan't to drive 8 RGB LED stripes (8 stripes * 3 colors per stripe = 24 channels) with PWM. Each output is driven with a logical level MOSFET. The stripes already have a resistor. I have looked at the TLC5940 and the TLC5942, but a forum post says, you have to set "BLANK" to ground to repeat each... |
H: LT3080 regulator question
The datasheet of the LT3080 voltage regulator says that "For true zero voltage output operation, this 1mA load current must be returned to a negative supply voltage."
What exactly does this mean? How can I return the minimum required load current to a negative supply voltage? In case I hav... |
H: Arduino - pin13 is HIGH by default
I've made some tests with my Arduino UNO, all worked great: analog i/o, digital i/o, serial i/o. Then I've noticed that built-in LED on pin 13 is always on.
I've uploaded an empty program like void setup(){} void loop(){} and it still was on. When I manually turned it off by digit... |
H: How to read a gyro/accelerometer
I recently purchased this MPU6050 GY-521 breakout board. I tried it with my Arduino Mega using this Arduino sketch provided by official arduino.cc.
(MPU-6050 Datasheet, InvenSence (producer) Page)
Man, it gives this weird output!!!
InvenSense MPU-6050
June 2012
WHO_AM_I : 68, error... |
H: What is clock skew, and why can it be negative?
My HDL compiler (Quartus II) generates timing reports. In it, the nodes have "clock skew" column. The only definition of clock skew I found is in the TimeQuest documentation (see page 7-24):
To manually specify clock uncertainty, or skew, for clock-to-clock
transfe... |
H: What's the deal with this beamed mains transformer design?
Take a look at the image. I always understood that transformers have as little air gaps in them as possible, but you can easily look through this mains transformers that I found in China. Not just for the EM-field, but also for dissipation purposes I'd expe... |
H: When is an input signal considered small for BJT and JFET devices?
I can't find a detailed answer to this question. What is the condition for a signal to be considered small, so that you have to use small signal modeling? Also how is this condition derived for both BJT and JFET.
AI: It's not that you have to use sm... |
H: RS485 Cable Lengths and Reflections
In our lab we have setup a RS485 network with short cables and the network is working fine. I know that terminating resistors are required, especially with longer cables lengths due to reflections on the line. Why do shorter cables work correctly without terminating resistors, ... |
H: How to explain the difference in modeling small signals for BJT and JFET devices?
I know there is a difference between modeling BJT and JFET devices for small signals, but I would really like to know, in depth, how to explain this difference.
AI: The form of the small-signal models for the BJT/FET are essentially t... |
H: Will moving transformer to separate case reduce noise in opamp-based circuit?
I'm building a simple phono preamp for my friend. I've designed a transformer based power supply to be on the same board as an opamp, then I hesitated - will I get less mains interference if I move the transformer and linear regulators to... |
H: Inductive choke with bypass capacitors?
I've been looking at a few power input circuits and quite a few of them suggest an inductive choke with a large bypass capacitor followed by smaller bypass capacitors.
In theory this is what I interpret the target effect is:
Bypass capacitors provide low impedance at high fre... |
H: Recommend motor type to turn baby rocker, into auto-rocker
Would like to convert a baby bouncer (like this one), which requires continuous manual effort to rock it, into one that use electro-mechanical means to auto-bounce. However, my aim is to make these on the cheap (as all of my other projects so far have). So ... |
H: Do you need to UL Certified the enclosure with the board inside?
I want to use the RaspberryPI in an industrial environment that requires all devices have UL certification. The RaspberryPI board has UL certification but there is currently no enclosures that are certified. I have been told the UL certification proce... |
H: In a Boost Converter, where is most of the heat dissipated?
In a circuit like this:
I am for now assuming that a lot of the head will be dissipated by the Diode, and hence I am preparing the PCB to include a heat sink for it just in case. But what about the inductor and the switching IC U2? And the MOSFET?
Any tip... |
H: Using a 555 instead of 7555
I'm creating this circuit (original circuit source here) and it requires a 7555 timer. A 7555 timer is like the next generation 555 since it is CMOS. Now there are no 7555s or CMOS 555 in my area and was wondering what will happen if I replace it with the NE555? Are there any consequence... |
H: Captive Nut For PCB Grounding
I need to affix a ground strap to my PCB. A strap similar to .
Ideally I want to simply screw this to the board. Are there captive nuts available for this purpose? I can't find anything via a standard source Digi-key or Mouser. I see that PEM makes some but after inquiring I have to o... |
H: What will happen if I apply 220 dc voltage to a 220 ac load?
Let say I have a lamp which is operated on 220 V ac.
Instead of applying 220 AC voltage I apply 220 DC voltage: what will happen? And if I want to convert this 220V dc to 220V ac then what should I do?
AI: An incandescent bulb will do fine. The 220 V AC i... |
H: transferring raw schematic to breadboard and PCB
i have some schematic from TINA pro, pspice, orcad and the lite. Is there a way to automatically convert it into a both breadboard and PCB layout. This is a bright idea since it will save time. What are your suggestions?
AI: If you use TINA pro, then let say you have... |
H: Power Line Crackle
I walk to work every morning and pass under some HV power lines. On high-humidity days, there's an audible crackle/sizzle emanating from the lines. I never hear this on the way home.
I would expect this to come from condensation on the insulators, but curiously it is audible only in the cente... |
H: Error in using Arduino virtual wire
I have this 433MHz RF Tx and Rx pair. I tried to transmit using following simple Arduino sketch, given in the VirtualWire manual.
#include <VirtualWire.h>
void setup()
{
vw_setup(2000); // Bits per sec
}
void loop()
{
const char *msg = "hello";
vw_send((uint8_t *)msg, strle... |
H: What to look for in a motor?
I am going to be making a small robot using a Arduino Mega ADK Rev3 with 4 motors, and about a pound of other stuff. This is the first time I'm doing any major hardware project, so I'm not really sure what to look for in a motor.
AI: There are a few primary specifications you should loo... |
H: Selecting AVR microcontroller with or without PicoPower?
I have been using ATTiny13 DIP AVR's for a few years, for very simple projects. I'm now expanding and switching to surface mount devices.
I'm a little confused about some of Atmel's offerings; let's take one example, the ATTINY26.
Specifically there are so ma... |
H: Outrunner motor
I'm building a flying copter and I've tried to control the speed of it's motors. All worked just perfect: I had a standard motor (with brushes) which had two wires, I've applied different input voltage and controlled it's speed.
The problem was, it was way too powerless... I've ordered a nice outrun... |
H: 555 trigger frequency signal
So, I'm remembering that back in school, I managed to make a 555 signal create a tone signal, and that another 555 could trigger the 555, such that I had a variable toned signal that could be pulsed. IE, I could change the frequency, and pulse the frequency. IE, I could have 3 pulse per... |
H: What is this IC?
The markings at the top say "TC104-1", and at the bottom "9041".
It was found in a box of random ICs and parts, and googling hasn't lead me anywhere.
AI: Looks to be a Texas Instrument TC 104-1, CCD line scan sensor.
From Data Sheet Archive I was able to find:
TC104-1
Linear CCD Image Array - DR ... |
H: Replacing D cell batteries with power adaptor
I have a device with 4 series 1.5V D cells batteries (About 8000maHour).
The batteries last 40 hours, making the average draw around 200mA. The problem however is that the duty is about 2% at 1/3Hz, so it seems to deliver bursts of about 10A, and I don't really want to ... |
H: Sawtooth traces on a PCB
Possible Duplicate:
Why wiggle nearby tracks on a PCB?
I was looking at a Raspberry Pi that a friend got today and noticed some weird traces on the board. I'm wondering why they were designed this way. Here is the best picture I could find of them.
See a larger image.
There are a few ... |
H: Was Benjamin Franklin wrong (about conventional current)?
I am starting to see a lot of people claiming that convential current is 'wrong' because Franklin made an error when he first started investigating electrostatics, and that later scientists didn't bother correcting the mistake, but preferred to keep the 'con... |
H: Where do I find a list of Arduino DIY shields
I am interested in Arduino shields for fun, so I do not have a specific need. To save money, I would like to build the shields myself. Is there somewhere I can see a list of the most common, simple and useful shields? I am interested in:
Parts cost
Parts availability
B... |
H: CMOS inverter with gate of PMOS transistor always grounded
If there is a CMOS inverter such that the gate of the PMOS transistor is always attached to the ground and the input voltage is only applied to the gate of NMOS, then how would the inverter behave, as in: Will it be similar to a NMOS inverter with a resisto... |
H: Identify a light emitting component
here's a picture of component that is not a LED but emits light, it's a tiny glass light bulb with a resistor and a red plastic case for mounting it.
AI: It's a neon light. Like it says it works at the mains voltage, you can't make it work at 5 V or so. The thing with the neon li... |
H: Protecting diode bridge from higher current
I have designed a battery charger circuit. The circuit is simple AC to DC power supply circuit, it is composed of a 220 Volt to 16 Volt stepdown transformer, a diode bridge and a capacitor.
Now the problem is that whenever I connect the charger to the battery the battery ... |
H: Using Xilinx ISE tools, "does not have a port named" error
I'm a verilog Beginner.
I created a design using straight-up Verilog then tested it using the ISE design tools. Works great.
I would like to synthesize this to see the resources that will be consumed but to do so seems to require a schematic file. So I cr... |
H: Identify this flat connector
What is this connector (and the eventual pliers used for it) that serves for Wago 256 terminals.
AI: Those look like ordinary insulated crimp ferrules. A search for "ferrule" on Mouser, for example, returns lots of results like this. The crimp tool that you select will typically depen... |
H: Advice for building a dual rail, +- 10V, regulated, DC power supply, 25mA
I am looking for some directive to build a dual rail, +-10V, regulated DC power supply to supply 25mA to two resistive loads. I am very new with this; I am an engineering student and this is my first design project. I have been told by the in... |
H: Verilog design decision - where should my counter be located?
I am coding in Verilog a typical count-to-n-then-reset-to-0 counter. My module has the logic to increment and reset the counter.
My issue is that I don't know where the counter itself should be defined.
I could pass the counter (as inout?) to the module.... |
H: What type of arduino board do I need?
I need some help with choosing an Arduino board or maybe something else for the task that I need to do.
I want to have a board that will get a input (power signal) to the board and that will send a some sort of signal through the COM port to my PC.
What do I need to achieve tha... |
H: Why is my simple boost converter giving me such a high peak output voltage?
I am trying to understand switch-mode power supply fundamentals through a simulation in LTSpice.
I wanted to build an excruciatingly simple boost converter circuit following a teaching model often given in textbooks, but I can't get this th... |
H: Turn on a relay when the output is high
I purchased a 5V 8 channel realy to use with Arduino.
When the output is low the relays are on. I need to turn the relays on when the output signal is high.
Is there a way to make the board respond to a high input and to turn on the relay?
AI: You could
invert the signal i... |
H: 24-pad, 0.5mm pitch: better to use QFN or BGA?
For a certain TI component, I'm choosing between these two packages, both of which are 24-pad and 0.5mm pitch:
QFN: http://www.ti.com/lit/ml/mpqf167b/mpqf167b.pdf (4 x 4 mm)
BGA: http://www.ti.com/lit/ml/mpbg520/mpbg520.pdf (3 x 3 mm)
Some considerations:
BGA is che... |
H: Torque measurement device calibration
I don't know if I'm at the right place to ask this question but here is my trouble :
I'm trying to find a good way of calibrating a electronic device used to measure small torques (0 -> 25 mNm).
Device adjustment :
Our current way of adjusting our measuring device is by hanging... |
H: Driving a large 7 segment display using a micro-controller
I need to drive a large seven segment display (segment length is a about 2 inches) using a micro-controller (PIC 16F877). I've driven normal seven segments directly from PICs without issues, but I found that 5v is not enough to drive this one. It needed som... |
H: Synchronising GPIO transitions to an external clock
Currently, I am using an ADC with an external trigger with the caveat that the edge of the trigger must be within +/- 25ns of the ADC's clock (See Figure 3 of the datasheet). The ADC's clock is available on a pin of the ADC.
In this case, the GPIO used to operate... |
H: Dual primary / dual secondary transformer heat up
I've built this 220v DC motor controller. I use a 2x110v - 2x15v transformer to power up the stator.
The transformer is a Myrra 45064 with the primary windings connected as follows: pins 1 and 9 connected to the mains, pins 4 and 6 in short.
On the secondary windin... |
H: What use is the reference node in nodal analysis?
Rules for identifying a reference node in a nodal analysis of a circuit include;
Node with largest # of elements
Max # of voltage sources
Node of symmetry
My question is, whats the point?
AI: The point is just to make the math easier. Generally "ground" is going to... |
H: Suggestions for 1-5 km range wireless communication?
I am developing a VOIP application. Most clients use a wired Ethernet connection, but some of the clients need to have a wireless connection. Currently the core board is using:
Cortex-A8 (TI AM3359)
256MB RAM
2GB Flash
WiFi 802.11N
But the range of WiFi is ver... |
H: Using both RS232 and USB for one device
I have two options for power sources for my board, which simply has an ATMega on it --- one is a 24 VDC source going into a switching regulator that supplies the board with 5 V. Another source is via a USB Bus using an FT232R that could also supply the board with 5 V. Is ther... |
H: Multiplexing 2 digit 7Segment with one Bit
I want to control a 2 digit 7-segment LED with a MSP430 micro controller. The display has 8 input pins per digit (8th pin is the dot, which I do not need) and two ground pins (common cathode). The idea is to connect the first 7 pins from the µc to the 7 segments of both di... |
H: Verilog - A line stays high, I need it to go low after a while
I'm working on a circuit in Verilog to be implemented on a CPLD. The output of the circuit will drive a stepper motor. The input is a stream of pulses from a machine.
I generate a stepper pulse every X spindle pulses. No problem, works great.
While s... |
H: Is there any motor which moves slowly and gives strong torque?
I need a strong torque motor which move slow. However, I don't want to use gear train because gears will be damaged easily by the strong torque. Please give me some suggestion.
AI: The cheapest and most common thing you will find is a stepper motor. You... |
H: IR LEDs for illumination, as used in night-vision cameras
Being aware that IR LEDs come in various frequency-ranges, illumination intensities, sizes etc., was wondering if someone can help me identify the right type of IR LEDs, a cluster of which could potentially be used to illuminate a dark-room, s.t. I can use m... |
H: Can't read written data out of 24AA1025
I've got a PIC18F with MSSP that I'm interfacing with a 24AA1025. I'm using MPLAB 8 and the functions from C18 to make my life easier. The only problem is that I've (supposedly) written a byte to the 24AA1025, but when I read it back, I get 0xFF instead of the byte I wrote.... |
H: Best IDE for 32-bit microcontroller on Linux
I'm choosing a 32-bit microcontroller to implement a Kalman filter.
I am very attracted to the Atmel Studio 6 IDE. However, it only appears to run on Windows.
Could anyone suggest a good Linux IDE?
Otherwise, I think I'll go with Atmel Studio 6 IDE in a virtual machine.
... |
H: FM Transmitter Modulation
I am designing an FM transmitter as a learning experience and for fun, but I am having some difficulty with FM modulation. I am using a VCO with a Colpitts topology and common emitter configuration. For modulation, I am using a varactor biased at 5V with a 1kHz, 5V amplitude message signal... |
H: Critique of my Data logger's Power circuit design
I am laying out my first full device, a fairly simple sensor-data logger, with these specs in mind:
I'm running microcontroller and sensor @ 3.3V, with load varying from 10 mA to 400 mA
device will be powered by a rechargeable Li-ion battery (4.2V maximum)
battery ... |
H: Short circuit protection on a charging line
I have a device that runs off SLA batteries that needs to be charged in a dirty environment. There is a possibility that the circuit may be shorted by accident during the charging cycle (this is unavoidable and must be protected against from a safety standpoint). I know t... |
H: Special switch based firmware update
I have to provide an update mechanism to a product. Currently, I implemented a bluetooth upgrade mechanism, updated pushed via Bluetooth. In case something goes very wrong, marketing asking for a recovery method, which is reasonable.
The uP I use has an embedded bootloader (ROM... |
H: Recording Servo/Motor movement with arduino
Hi I'm really new to Arduino projects and don't really know how to start. I'have to do a project for university. The programming part should be no problem but I don't have any experiance with electronics.
What I try to achieve is to record a spezific motor movement. For e... |
H: Does it always make sense to constrain an I/O port?
I am following an Altera online course on their timing analyzer software called TimeQuest. In it, their recommend that, at the very least, all clock and I/O ports be constrained.
In my FPGA design, I am generating an output clock pin to an ADC by muxing various cl... |
H: What is a typical example of a combinatorial feedback loop?
By looking at some of the details of the Altera timing analyzer TimeQuest, the concept of a "combinatorial feedback loop" was mentioned. The obvious search is not terribly helpful and there doesn't seem to be a Wikipedia article on the topic.
What exactly ... |
H: How do you mount an LED
Can someone explain to me a good way to mount a 5mm component LED? A little background on the project to help.
I'm working on a prop that will be carved out of styrofoam. I will be using LED's to illuminate recesses of the prop. The LED themselves will be mounted under a foam shelf or in a c... |
H: What are these two white screws on a ps3 power supply?
In this video a gentlemen turns two white screws to fix a play station 3 not turning on anymore. Could anyone tell me what these screws are, and what turning them a little bit is supposed to solve?
AI: They are trim pots for OCP, or Over Current Protection, an... |
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