AliExpress: 2$
| color | USB | Board | Proccessor | Prog | Mem | MIPS | SPI | I2C | UART |
|---|---|---|---|---|---|---|---|---|---|
| black | Mini | Arduino Nano | ATmega328P (old bootloader) | 32KB | 2KB | 20 | 2 | 1 | 1 |
| blue | Mini | Arduino Nano | ATmega328P (old bootloader) | 32KB | 2KB | 20 | 2 | 1 | 1 |
| red | Micro | Arduino Nano | ATmega168 | 16KB | 1KB | 20 | 2 | 1 | 1 |
