This board provides support for up to 4 K-type temperature probes as well as fan PWM support and a USB to serial interface to enhance the T-962 reflow oven.

Connectors:

J1: Connect to T962 controller board 1: DQ 2: FAN_PWM 3: GND

J2: Thermocouple connector 1: T3+ 2: T3- 3: T2+ 4: T2- 5: T1+ 6: T1- 7: T0+ 8: T0-

J3: 12V in 1: GND 2: +12V

J4: +3V out 1: GND 2: +3V

J5: Fan out 1: PWM (GND) 2: +12V

J6: +12V out 1: GND 2: +12V

J7: Programming Header, connect to T962 controller board header 1: N_ISP 2: N_RST 3: TX 4: RX 5: GND

Hook up either J8 or J10, not both

J8: Micro USB

J9: N_ISP and N_RST for external buttons 1: N_RST 2: GND 3: N_ISP

J10: USB 1: GND 2: D+ 3: D- 4: +5V

BOM: QTY Ref 5 C1,C4,C8,C10,C12: 0.1uf X7R 0603 4 C2,C5,C11,C13 0.01uF X7R 0603 1 C3 1uF X7R 0603 1 C9 4.7uF X7R 0603 1 D1: ST Microelectronics USBLC6-2SC6 1 J2: TE 282834-8 1 J3, J5, J6: JST XH-B02B-XH-AM 1 J8: Molex 105017-0001 1 Q1: Infineon BSS214NWH6327XTSA1 1 R1: 4.7K 0603 1 R2: 100K 0603 1 R3: 1K 0603 1 R4: 22.1K 0603 1 R5: 47.5K 0603 2 S1, S2: C&K KMR231NG LFS 4 U1, U3, U4, U6: Maxim MAX31850KATB+ 1 U2: ST Microelectronics LD1117S33CTR 1 U5: Silicon Labs CP2102N-A01-QFN24

All parts can be found at Digikey, however the MAX31850KATB+ is considerably less expensive at Mouser.