Search results

  1. S

    My first schematic of a 2-channel relay board

    Thanks!
  2. S

    My first schematic of a 2-channel relay board

    Final schematic: 1) Removed LTV-356T Opto. 2) Added 10k between Base and Emitter of the PMBT3904. 3) Connected LED to 5v line instead of the collector line on the PMBT3904. 4) Replaced 200R with 220R. 5) Replaced normal fuses for blade fuse holders. 6) Replaced...
  3. S

    My first schematic of a 2-channel relay board

    Hey all this would be my first try at creating a schematic in KiCad. The schematic is a basic 2-channel relay. The inputs are automotive 12v and gnd. This gets converted to 5v by the K78L05-1000R3. The Wemos D1 mini has 2 digital pin outs that are 3.3v going to the LTV-356T with a 200...
  4. S

    Creating a USB-C Passthrough with power charging detection

    So something like this?
  5. S

    Creating a USB-C Passthrough with power charging detection

    Hey all I have a project I am needing to do but I'm unsure as to the best way to go about doing it. What I am wanting to do is check to see if a tablet or laptop is plugged into the USB-c cable so that I can have a visual representation of confirmation that it is connected correctly. Most...
  6. S

    Reading 2 digit 7 segments with ESP32

    So I'm looking at my version of the ESP32 that I have (Known as the Lolin32)   And looking at their schematic I see that they call out GPIO 16, 17, 18 & 19. However, I do not have the same pin layout as they do...Go figure... - GPIO 19 -> SWG main board clock - GPIO 18 -&gt...
  7. S

    Reading 2 digit 7 segments with ESP32

    I have been trying to contact a forum member that has done a modification to his pool equipment in order to control it remotely instead of having to go to the box every time and check on the codes. His has released the source code on his github page. However, I have a different model than he...
  8. S

    Controlling Yihua 995D for USB control

    I recently purchased a YIHUA 995D SMD Rework Station and me being the geek that I am wanted to see if I could perhaps control it (via USB/ATMEGA) by using my PC and touch screen instead of physically doing so with my hands. Being able to control it via PC would allow me to mount the 995D under...
Top