RoomThermostat
henkjannl
Opentherm room thermostat that can be controlled through Telegram, but also locally
Components (18)
| Reference | Value | Description |
|---|---|---|
| Q1 | MMBT2907A | PNP transistor, base/collector/emitter |
| U5,U6 | EL357N-G | |
| U7 | mini_esp32 | |
| C1,C3 | 10n | Unpolarized capacitor |
| C2,C4 | 2n2 | Unpolarized capacitor |
| D1-D4 | 1N4148WS | Diode for simulation or PCB |
| D5 | BZT52C4V7S | Zener diode |
| D6 | BZT52C15V | Zener diode |
| D7 | BZT52C4V3 | Zener diode |
| J1 | OpenTherm | Generic screw terminal, single row, 01x02, script generated (kicad-library-utils/schlib/autogen/connector/) |
| J2 | Laser range sensor | Generic connector, single row, 01x06, script generated |
| J3 | ST7789 | Generic connector, single row, 01x07, script generated |
| J4 | Encoder | Generic connector, single row, 01x05, script generated |
| R1 | 200 | Resistor |
| R2 | 150 | Resistor |
| R3,R6 | 330 | Resistor |
| R4 | 4k7 | |
| R5 | 1k5 | Resistor |