# help

1. ### Circuit Analysis

For Question 2.1, is the power 500W or 100W ? Do we need to apply the passive sign convention rule for power in whatever cases? Also, i’ve Learnt that we can check answers by balancing power in a circuit. But the power in this kind of circuits don’t balance out, but it is still valid. So when...
2. ### Assembly Language Program

So we've been instructed to write an assembly language program to display numbers 0-9 on a common anode 7 Segment Display and simulate it using the Proteus Software. (8051 microcontroller) (And 0-F as well) I'm a complete beginner in this field and was hoping that I'd get some help here from...

Hi guys I am on a little project (ecg with an arduino) I followed all the topics , the diagrams to wiring , electrodes placement.... But never I can get an classic ECG GRAPHIC Please help Best regards AD8232 Gnd-gnd 3,3v -3,3 v Output -a0 Lo- dig 11 Lo+- dig 10 Sdn- none Code: Void setup() {...
4. ### How do you identify ICs and other components on a circuits board

So i'm currently trying to take parts out of a Bluetooth speaker's circuit-board and find the Bluetooth module for a DIY project. I looked at the board and some ICs and tried looking them up to no avail. So How Do you read an IC or any other components on the board Or even find a schismatic...
5. ### Help: Redirect New User to Appropriate Sub-Forum for Product Design

Hi, Being a new user I would appreciate it if someone can redirect me to the appropriate sub-forums for my technical question. Context: Well, I'm looking to build an open-source Automated Optical Inspection device(non-profit). I would like to ask technicians, EEs, CEs, and even hobbyists who...
6. ### Pressure sensor

Hi guys I need your help to making work the pressure sensor MPS20N0040D (module with hx7110) , I uploaded the sketch , but I can't get a right graphic , it's seems to be not fonctional !!! It's the same graphe with & without the module connected To the arduino !!! Please help Best regards
7. ### I need a weird heater for reptile tank

I have a 3 tier reptile tank, but apparently there are not other things to heat them other than lamps an mats. Needless to say I need to know if there is a way to build a circuit (or buy) one that can also regulate the temperature output with an accuracy of 1+/- degree. I basically am going to...

Hello all! I'm working on a project that requires data to be sent and received over optic fiber cables, specifically TOSLink cables. Ideally, for this project, I want to use these RS232 "bricklets" made by Tinkerforge, which also have a TTL interface I can connect TOSlink transmitters/receivers...
9. ### What should I know to use Image sensors

Hello, I'm now really interested in development of camera modules, image processing(ISP) and everything around it, so I'd like to ask what a literature or some useful guides are out there. To be clear, my final target is development of an camera module for drone(something with low latency, high...
10. ### Confused over an easy plot about inductor current

Need some insight about a plot found in the Fundamentals of power electronics second edition book. I don't really understand why it is written like this. Left side $$\frac{I}{V_{g}/R}$$ can be rewritten to $$\frac{1}{D'^{2}}$$ so it is basically "just" duty cycle. The book states that the...
11. ### Alliance (Keys Fitness) Treadmill Motor Controller Help

Hello! I am looking for any advise you may have on repairing an Alliance (Keys Fitness) treadmill. My mom was running on it last night when it stopped suddenly then started to spark inside the motor cover. She immediately unplugged it and there was a strong burning smell. I removed the...
12. ### Unknown IC !!!

hello i have a wifi camera from a quadqopter and i used a battery to turn on.I connected the poles incorrectly .and I smelled burning, i open it and i saw a ic is burned i searched the name of ic but i cant find the data sheet.it is written on it: FA2UMK .it has 5-pin and it is smd.please help...
13. ### SMD Transistor Identification

Hello, I need some assistance identifying this smd component on an LCD inverter. It is marked DK and then QM right below it. I have another identical board which is a newer revision and the same part is marked DK however with QS below it. My preliminary research on s-manuals seems to indicate...
14. ### Help. Looking for connector

Does anyone recognizes connector attached in photos, looks like 1mm pitch, 5mm wide, ~1mm high Used in Beats Solo3
15. ### Need guidance on this homework problem

I have a problem in my ET212 class that I truly have no idea on where to start, I have the circuit design, but am clueless when it comes to the values that I need to use. I am not asking for answers, mainly just guidance on where I am supposed to start, or the steps i need to do to find my...
16. ### Lvds help

So this might be a bit of a strange one i have a LE-375 single board computer nothing to fancy but im planning a little project for it and i got given it and would love to get it up and running on Linux as its not the most of powerful of devices. Iv contacted the company who make them but not...
17. ### Need help measuring MPH and Incline from MC-2100 treadmill motor

Hello everyone, I made a post before on here (I am new) but I think I posted it in the wrong sub-forum and I got no responses. I have a Nordic Track T5.7 with a MC-2100LS-30 motor in it. I have connected an Arduino Uno to the wiring harness that connects the controller to the console like so...