Thanks mikemoy,
I used 2N3904 and 2N3906 for this and it works great.
I will definitely find more usages for this.

My little light barrier already works, but I cheated big time (see attachment)
For me this also eliminated the faint glow the Keyes Laser has when connected to 5V and GND.
But as soon ...

Hi,

try searching for "Strapping Pins" in the documentation of the ESP32.
The "other Programmer" already has resistors pulling Up the Enable-pin and IO0 (RST/PROG)
Guess this is what you're missing.

try google-images of "esp32 boot pins" you'll find plenty of wiring examples
or try to program the ...

Hi Munque,

maybe this suggestion sounds silly but did you try another USB-Cable?
I've got lots of USB-A to micro-USB but only a few support data. Most of them are charging wires with only two Pins connected to USB-A.

Also, what kind of USB-A to USB-C adapter are you using to connect with your ...

Hi,

I'm not even sure the Title of the Topic is correct.
Actually I'm searching for a schematic to interface a Keyes Laserpointer.

I have 5 Volts connected to my board, using an AMS1117 chip to give the ESP32 3.3 Volts.
The Laser is connected to 5V and GND and I want to switch it on and off ...

This looks quite complicated.
I just used the OTAWebUpdater from the example and changed the WiFi.begin with WiFi.softAP

worked for me ...


void setup(void) {
Serial.begin(115200);

// Connect to WiFi network
WiFi.softAP(ssid, password);
Serial.println("");

Serial.print("Connected to ...

https://community.particle.io/t/32-chan ... cted/30239