LILYGO provides the PDF schematic and some Arduino code samples on GitHub. Those include the factory test tool, RS485 Master/Slave samples, an SPI sketch, and as a “Wire” program showing how to use ...

The aim of our project is to create a system similar to toy vending machines. This system is an Arduino Esp32 It consists of microcontroller, stepper motors, cables and cardboard tape and glue. II.

This project uses the Razorpay API to generate dynamic QR codes for Indian UPI payments. The QR code is displayed on a screen, and the user can scan the code to make a payment. The project uses the ...

The maker techiesms has successfully built a compact UPI payment receiver using Makerfabs' 1.8-inch AMOLED display module. The module comes with an ESP32 S3 (R8) on its back, which acts as its brain.