Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [controller]

Tag is very generic and a bad choice. Please consider a more appropriate and directed tag.

192 questions
15
votes
8 answers

Capacitive Touchscreen for DIY usage?

Anyone know of a good source for capacitive touchscreens in low quantity at a reasonable price? Just something to play around with in projects, I'm interested in either small (eg for portable applications, 3-5") or large (eg for kiosk or standalone…
davr
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6
votes
5 answers

Understanding a PID controller

I have a couple of questions regarding the PID controllers; maybe it is that I have not understood the concept very well. I will formulate my question with a case: I have a system which consists of a warp beam in which a thread is wound and a motor…
Choguerrero
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4
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1 answer

What's the point of the proportional branch in a PI controller?

I just watched this MatLab video on the basics of how PI/PID controllers work and for the most part it makes sense. They started with an example with just a P controller and showed that, while it worked fine for a really simple case, in other cases…
Mikayla Eckel Cifrese
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3
votes
2 answers

PID controller question

I came across this PID controller that drives a motor, which I understand well. For my application, I need to drive a load in both direction (two electromagnets in series with poles opposed). The feedback is provided by a hall sensor that…
Ultra67
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3
votes
0 answers

Custom USB Gamepad Working But Not Detected In-Game

I've created a custom HID gamepad using an STM32L151C8T6 (probably irrelevant) and my computer recognizes the device using the gamepad tester application built into Windows 10. I can verify the functionality by moving the joystick around and…
Tanner Hollis
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3
votes
1 answer

PS3 Sixaxis controller won't charge over USB

I made a 5V charging setup and want to connect USB devices to it to charge them. Most devices work ok, but my Playstation 3 Sixaxis controllers won't charge. The voltage is ok, slightly over 5V. As prescribed by USB I short circuited both data wires…
Jeroen Kransen
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3
votes
2 answers

4.4V Li-ion polymer battery

I accidentally broke down the charge controller on my new Powerbank. However I am left with a brand new unused 20.000 mAh Li-ion Battery. Which I was planning to hookup to a new charging module/powerbank circuit. But then I saw the writing on the…
Wastef
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3
votes
1 answer

Simple CAN bus design, communication issues

I am trying to get some simple communication between two boards that I've designed with an ATmega328P microcontroller and MCP2515/MCP2551 combination. The design is as follows: I have both ends terminated with the 120 Ω resistor and jumper…
George TG
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3
votes
4 answers

Fixing electrical controller (with joystick) on Pride Quantum 600 power wheelchair

The momentary switch is bad on a Pride Quantum 600 power wheelchair. The picture is below. It turns on, but you have to hold the rubber button/switch in the correct spot with the right temperature before it will turn on. What could be the problem…
JustBeingHelpful
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3
votes
1 answer

Use different footprint for a SATA connector

I am designing an Linux Board which needs a SATA connector. Now im faced to choose between 2.5 HDD SATA connectors and the new mSATA (mini PCI express) connectors. For compatiblity and usuabillity purposes, i would like to use or foreseen both of…
C. Hediger
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3
votes
2 answers

Using a TFT display that has no controller

I have been using LCD screens (with the controllers) for my projects for a long time. Now I thought of learning how these screens actually work, the part before they go to the controllers. Well the idea came to my mind when I managed to scavenge…
Nilanjan
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3
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1 answer

Can I use full-size 64/72 bit DDR2/DDR3 memory module with CycloneV hardware controller of 24 + 24 bits?

I thinking of using Cyclone V FPGA and its hardware memory controller: There is "Cyclone V FPGA Multiport Memory Controller" document from…
osgx
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2
votes
1 answer

Do I have to explicitly connect all pins of the ethernet chip in the FPGA when designing a new controller?

Regarding the Ethernet peripheral of the Spartan 3E FPGA specifically the SMSC LAN83C185 Ethernet chip. The task is to create our own interface between the PLB and the ethernet chip. So far, I've been basing it on the xps_ethernetlite_v4.00…
Xegara
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2
votes
2 answers

Running a MOSFET from a transistor for a fan controller

I have a PC fan controller that is capable of powering 10w per channel. I'd like to put 23w of fans on a single channel, so I am trying to find a way to use the electronics already on the fan controller to activate a MOSFET or other transistor that…
Michael Dornisch
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2
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2 answers

How to implement the design of a bidirectional buck-boost converter?

I need your help in designing a bidirectional buck boost converter with the following requirements: Input voltage: 100V-400V Voltage range: 250V-1.2kV Output current: 40-80A Power dissipation of 24 kW. Switching frequency: 20kHz I did some…
victor_uk
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