TinyISP AVR Programmer

A small programmer for almost all AVR 8-bit devices

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A tiny AVR-ISP programmer based on an ATtiny-45, witch can be used as a keychain

When I first saw the original project, I had the idea to build a tiny ISP programmer. In the and it got so tiny, that i added a hole, so it can be used as a key chain. The price per unit is around 5.4€.

It is based on the works found here:
v-usb from framework
usbtiny isp

Adobe Portable Document Format - 78.92 kB - 03/27/2017 at 16:23


KiCad schematics and pcb

Zip Archive - 19.20 kB - 03/27/2017 at 14:06


  • 1 × LD1117S33TR Power Management ICs / Linear Voltage Regulators and LDOs
  • 1 × Attiny45-20XU Microprocessors, Microcontrollers, DSPs / ARM, RISC-Based Microcontrollers
  • 1 × 10uF capacitor 0805 capacitor
  • 2 × 100nF capacitor 0603 capacitor
  • 2 × MMSZ3V6T1G Discrete Semiconductors / Diodes and Rectifiers

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