The new black BI2 board is ready. I have a few assembled boards ready for shipping. Have a look at www.tindie.com
3 JST 1mm plugs (battery, motor 2, motor 3), LED, reset button, M+/M- is for motor 1
JST 1mm plug for motor 1, alternative RESET button
Features
- ESP8266 Microcontroller with WLAN
- MPU9250 (accelerometer, gyroscope)
- LiPo battery charging
- 3 motors can be connected (simple motor driver circuits)
- 1 WS2812B LED – a colourful LED (16 Mill. colours). They are commonly known as Adafruit Neopixel – a strip or a ring of individual programmable LEDs (when use the WS2812B only two motors can be connected)
- design based on the great Adafruit Feather Huzaah ESP8266
- vibration motors and LiPo battery can be easily connected with JST 1mm connectors
- two reset buttons (the button next to the USB connector can be overmolded)
- USB connector for battery charging and code uploading
- programmable with the Arduino IDE or NodeMCU
- white LED for indicating charging
- standard LED (yellow) on GPIO00
- round 40mm diameter
There are 3 free GPIO ports. Standard layout are for driving 2 motors (GPIO 12 = M2, GPIO 13 = M3) and 1 LED (GPIO14). Alternatively you can use 3 motors (GPIO12,13,14) but no LED.
Standard: SJ2 not connected, SJ3 connected
Alternative: SJ2 connected, SJ3 not connected
Here is the schematic which is adapted from Adafruit.
References:
body interaction 