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Arduino and oled screen i2c problem
GPS6MV2 problems

Trying to add cellular to ESP32C3 (Seeed Studio) with BK-SIM7080G

Battery powered project
ATS2855

Can't show anything on a WS2812B 8x8 matrix (arduino nano)
FastLED.addLeds<TYPE, DATA_PIN, RGB>(leds, NUM_LEDS);, and a bunch of FastLED examples. I also tried the NeoPixel libraries, but with no result. Nothing works.
All I have is the following information:
- When declaring only 1 led (instead of the 64) nothing happens. Every led is off.
- When declaring 64 leds (or more) the first blue led seems to blink with very low intensity an very very shortly (the LOW time seems to be much longer than the HIGH time)....
Will the hc-sr04 be able to give inputs and outputs if i connect the wires in this way?

NFC/RFID reader with two transponders

thermal camera programing
Old Drone Camera Hacking
lsusb nor a serial terminal like coolterm.
after a little bit of digging on the internet, I found a post mentioning a similar module to mine, but theirs appears to not have those 4 pins on the side. https://electronics.stackexchange.com/questions/490422/controlling-3-pin-pinhole-camera-from-drone-using-arduino
one thing I could confirm was taking pictures and videos when hooking the yellow wire to power. ...
Arduino Mega 2560 Pro (Embed)
I have to admit, like I said, being new to the Arduino world, I'm still in the process of setting up and building my project which will contain 3 rotary encoders to start and will build from there with SPST switches.
Is there something I'm doing wrong with Arduino app that its not seeing the Arduino? withinn MobiFlight, I do a process call "Upload current firmware" to the board. This all works (directly to the board). Until I start to add devices (switches and encoders) to my board and startup MobiFlight from my sim computer, I cannot do anything further with the board until then. ...
Controlling A Video Overlay Device
ESP32 with dual ethernet
Hardware for temperature sensor system

⚠️ The ESP32 Cam isnt working
E (23) camera: Camera probe failed with error 0x105(ESP_ERR_NOT_FOUND)
Camera init failed with error 0x105
E (23) camera: Camera probe failed with error 0x105(ESP_ERR_NOT_FOUND)
Camera init failed with error 0x105
Cant connect DFPlayer mini to ESP8266

module cam OV7670
Motor & diode.

help with arduino micro

TF-Luna