| Component | Example | |-----------|---------| | Resistor (R) | 220Ω – 10kΩ (depending on sensor needs) | | Sensor 1 (S1) | DHT22, BME280, analog sensor | | Sensor 2 (S2) | Second identical or complementary sensor | | Battery 1 (B1) | 3.7V Li‑ion or 2xAA | | Battery 2 (B2) | Same chemistry as B1 | | (Optional) Diodes | 1N5819 (if combining batteries safely) | | Microcontroller | ESP32, Arduino Pro Mini, nRF52 |
Please let me know if you want me to:
B1 (+) ---- R ---- S1 ---- S2 ---- B2 (-) ---- (GND of uC) | Component | Example | |-----------|---------| | Resistor
If both sensors share one resistor and each draws I_sensor : Arduino Pro Mini