Digispark kickstarter micro development board attiny85/tiny85 modul für arduino iic i2c usb - AliExpress
Xanthium enterprises - RS485 communication between PC and ATiny.A C# program running on the PC controls the ATtiny board through RS485 protocol.Visit https://goo.gl/uvyGhG | Facebook
ATTiny85
Wattuino Nanite 85 (ATtiny85 mit USB Bootloader) - Watterott electron
RS-485 Micro-Controller Extension - Hardware - BrewPi Community