T-962/T-962A controller upgrade board

Features
- 4x MAX31850 for K Type thermocouple
- DS18S20 for board temperature measurement (optional)
- USB to UART with CH340
- Fan control via AD0 pin or permanent on when AD0 is not connected
- Push buttons for reset and ISP mode
- Seperate power supplies for the digital and analog circuitry

Firmware

Designed for the T-962-improvements Firmware by UnifiedEngineering.