Create the schematic for ESP32 NES console with a TFT display, SD card reader module, music decoder and buttons and uplaod .NES files to the cart an play any old Nintendo games.
A PCB with ESP32 an SSR relay and 220V AC converter. Very small IoT control with Arduino code and homemade PCB. Control via Internet from with database from anywhere in the world.
Tutorial on how to make a homemade FOC controller PCB with L6234PD driver for brushless triple phase motors BLDC with closed loop control and AS5048A magnetic encoder.
Homemade handheld multimeter and PCB with multiple modes for voltage, resistance, capacitance, current, inductance, frequency, diode, continuity and more. Measure everything with such a small PCB and 3D case.
How to make filament out of plasitc bottles with a 3D printer nozzle, bottle cutter and a PCB controlled with Arduino for strady temperature and rotating a stepper motor with 3D printed gears.
Tutorial on how to program the ESP32 with Arduino IDE and make a WIFI connection, create a database and make a IOT project with POST method and php MYSQL