1. amachairas

    Robot Vacuum - Laser Distance Sensor not spinning

    Hello everyone, i have a roidmi eve plus with non spinning LDS(The sensor on top). The board you see is on the sensor assembly. I measure 5v coming to the board, and 2,3v on the pwm pin. The mosfet on the top left corner measures 2,3v on the gate and when i turn the vacuum on i have continuity...
  2. D

    Connectors: Ground edges? Mechanical post-hole size? Weird through-hole "pin"?

    Hello. I'm an inexperienced circuit designer and I've never designed a PCB with connector-headers until now. I'm using Harting 26-pin surface-mount connector/header 15110262601000 and I downloaded the footprint and CAD from Digikey and imported them into KiCAD for my PCB layout. I have three...
  3. Akshay447

    Arduino nano wireless car Current leakage

    Wireless remote control car. Motors turn on upon connecting batteries to the circuit (Reciver), while remote controller (Transmitter) turned off (Not connected any batteries). Not a slightest clue of what to do in this situation, any help would be greatly appreciated.
  4. L

    My LCD 16x2 turns on but doesn't show the white squares neither changes the contrast.

    Hello. I'm making a voltimeter-amperemeter using an atMEGA328P, L7805, LM358, LCD 16x2 and some other components. The problem is that even though the LCD turns on, it doesn't show the code or at least the white squares it should, and when I move the potentiometer that goes with it it doesn't...
  5. P

    Blown Inductors on a Dell Laptop Board

    Hello everyone, first thread here, I have cracked open a Dell XPS13 9350 that I've diagnosed the motherboard being dead. It's my mothers old laptop. I figured this would be a good chance to learn more about the micro parts on a board. Upon taking it apart, I found some blown inductors (atleast...
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