QR Codes on LPG Cylinders Aim to Improve Transparency and Tracking Liquefied Petroleum Gas (LPG) cylinders used in households across India are gradually being equipped with QR codes, a digital feature ...

Raspberry Pi Pico's built-in bootloader allows you to write firmware via USB or SWD. However, in some situations, other interfaces may be useful. Picoboot3 now offers the options of UART, I2C and SPI.