OB38R16T1W28SP
| PORT | CONN | DESC | SW | I/O | AF |
|---|---|---|---|---|---|
| P0.0 | SW | STEAM | I | ||
| P0.1 | LED | LED | O | ||
| P0.2 | PCB-C.6 | O | |||
| P0.3 | PCB-C.7 | O | |||
| P0.4 | NTC1 | COFFEE BOILER, 10K NTC, 1K pullup 5V | I | ADC0 | |
| P0.5 | NTC2 | STEAM BOILER, 10K NTC, 1K pullup 5V | I | ADC1 | |
| P0.6 | PCB-C.2 | 10K pulldown to GND | I | ADC2 | |
| P0.7 | PCB-C.3 | O | |||
| P1.0 | PCB-C.4 | ||||
| P1.1 | PUMP | O | PWM1 | ||
| P1.3 | Z-C | I | INT0 | ||
| P1.6 | H2 | COFFEE BOILER | O | PWM2 | |
| P1.7 | H1 | STEAM BOILER | O | PWM3 | |
| P2.3 | PCB-C.5 | O | |||
| P2.5 | PCB-D.TX | TX_1 | |||
| P2.6 | PCB-D.RX | RX_1 | |||
| P3.0 | K3 | COFFEE VALVE | O | ||
| P3.1 | K2 | STEAM VALVE | O | ||
| P3.2 | K1 | 3WV | O | ||
| P3.3 | BUZ | O |
| PCB-C | ||
|---|---|---|
| 1 | 5V | |
| 2 | P0.6 | PWR=1K, S1=10K, S2=30K to 5V |
| 3 | P0.7 | LED common |
| 4 | P1.0 | |
| 5 | P2.3 | PWR LED |
| 6 | P0.2 | S1 LED |
| 7 | P0.3 | S2 LED |
| PCB-D | |
|---|---|
| 5V | |
| RX | P2.6 |
| TX | P2.5 |
| GND |
NTC 10kΩ @25°C
float t = (-63.82) * ln(r) + 567.4 for coffee boiler
float t = (-44.08) * ln(r) + 416.42 for steam coil