Junkbot board is a microcontroller board based on Arduino NANO. It has many digital and analog I/O pins. In addition, to a built-in Bluetooth and Wi-Fi models.
1- Mini USB power ,USB to computer
2- Power Jack.
3- On / off switch
4- Digital input / output pins
5- Analog input / output pins
6- DC motors’ pins
7- Bluetooth model (HM13 – Dual mode (classic and BLE))
8- WIFI model (ESP-12E)
9- No connection (NC) – Bluetooth (BL) –WIFI (WF) switch