Pinout

Hardware rev 1.3 (HW_VERSION 13) older see history or schematics

J1 - Tip Connector

1. VCC (5V)
2. Tip Temperature Sensor (Thermocouple)
3. 12V PWM output for heating
4. 12V PWM output for heating
5. GND
6. GND
7. GND
8. Hall Sensor (ADC1)

Some pins have the same signal to increase the maximum current.

UART

UART Port to see Debug messages

(names are from microcontrollers point of view)

1. RX
2. TX
3. GND (introduced in HW_VERSION 2)

J2 - Future use

1. PC3
2. PC2
3. GND

I2C

1. VCC (5V)
2. SDA
3. SCL
4. GND

Power

1. 12V
2. 12V
3. GND
4. GND

ISP-HEADER

1. MISO
2. VCC
3. SCK
4. MOSI
5. RST
6. GND