DHT22 Sensor Setup on ESP32
The layout works for me. Please add the five connectors with 10kΩ pull-downs for each ADC net.
Thought
I can add those five connectors (J3–J7) and the 10 kΩ pull-down resistors (R25–R29) tied to your specified ADC nets now.
Thought
Next you’ll add one 4.7 kΩ pull-up resistor per DHT22 data line. Here’s how:
- Select a 4.7 kΩ SMD resistor (e.g. 0603, 1% or 5% tolerance).
- For each GPIO (IO4, IO16, IO17, IO21, IO22):
- Place a resistor (e.g. R20…R24)
- Connect one end to the +3V3 net
- Connect the other end to the corresponding data net ([GPIO4], [GPIO16], [GPIO17], [GPIO21], [GPIO22])
- Verify all pull-ups tie back to your +3.3 V regulator and that each DATA line has its own resistor.
Would you like me to add and wire these five pull-up resistors in your schematic now?
Proceed with pull-ups
Confirm pull-up setup
Accept pull-up addition
Yes, please add the five 4.7kΩ pull-ups using 0603 SMD resistors tied to the +3.3V net.
