Adafruit UPDI Friend USB Serial UPDI Programmer

The Adafruit UPDI Friend is a compact USB serial programmer designed for programming modern ATtiny chips with ease. It supports both 3V and 5V power and logic levels, making it versatile for different project needs.

This programmer features a CH340E USB Serial converter chip with cross-platform drivers, a 1K loop-back resistor between RX and TX lines, and a USB Type-C connector for data and power. It includes a JST SH cable for quick breadboard connection and has 0.1" spaced breakout holes for custom wiring.

• Select between 3V or 5V power and logic: the 3V regulator can source up to 500mA for larger projects.
• CH340E USB Serial converter with reliable cross-platform support.
• 1K loop-back resistor between RX and TX for stable communication.
• USB Type-C connector for universal computer compatibility.
• JST SH cable included for easy breadboard integration (additional cables available separately).
• 0.1" spaced breakout holes for custom connections.
• Green power OK LED and red serial activity LED indicators.
• Inspired by open-source hardware design from Stefan Wagner.

The UPDI Friend is compatible with the Arduino IDE using the megaTinyCore board support package and supports programming speeds of 230Kbps or 56Kbps.

Dimensions: 26.4mm x 17.8mm x 4.9mm (1.0" x 0.7" x 0.2")
Weight: 2.3g (0.1oz)