Features:

* 1 x i2c input for display or sensors - pins A4(SDA), A5(SCL)

* 1 x Serial output for display or blutooth module (Nextion TFT HMI) - pins RX3, TX3

* 3 x Solid State Relay pins (5v & 12v-Selectable pads & GND switched via transistors) - pins 2. 3. 4

* 1 x 12v PWM fan connection - pin 5(TX1/PWM)

* 1 x Sense amplifier IC for a K-type thermocouple. - pins 12(DIN), 10(!CS), T-, T+, 13(LED/IC pin5)

BOM:

* C1 0805 0.1uf Capacitor

* D1 SMA B130 Diode

* Q1 SOT23 MMBT2222A SOT-23 NPN (6V / 750 / 40V 600MA)

* Q2 SOT23 MMBT2222A SOT-23 NPN (6V / 750 / 40V 600MA)

* Q3 SOT23 MMBT2222A SOT-23 NPN (6V / 750 / 40V 600MA)

* R1 R0805 1k Resistor

* R2 R0805 1k Resistor

* R3 R0805 1k Resistor

* R4 R0805 100k Resistor

* R5 R0805 100k Resistor

* R6 R0805 100k Resistor

* U$1 TEENSY3.1

* U$2 MAX6675 SO08 IC

* Momentary Tact 4pin 4x4x1.5mm SMD