Digispark is the Attiny85-based USB development board from Digistump. Due to the built-in USB connector, you can directly program the Attiny85 using Arduino
![Arduino ATtiny85 Programmer Shield on PCB [ATtinyShield]](https://i.pinimg.com/originals/cb/83/26/cb83262cb4f0344b49f6122c36187868.jpg)
