ESP32 Sensor and Pump Circuit Design


we are making a esp32 devkit 1 circuit with 4 sensors of soil, 6 pumps controlled by a relay using 12 volts, a buck converter , one dht
Sure—before adding everything, could you clarify a few details?
  1. Which soil-moisture sensor model are you planning to use?
  2. Which DHT variant (DHT11 or DHT22)?
  3. Should the buck converter output 5 V (to power the ESP32 DevKit via USB/VIN) or directly 3.3 V?
only headers for connection, dht 3 pins 4 for buck converter and esp32 to buck converter 5v
I’ll add:
  • A 3-pin header for the DHT (VCC, GND, DATA)
  • A 4-pin header for the buck converter
Just to be sure—what signals should go on that 4-pin buck header? For example:
  • VIN (12 V)
  • GND
  • VOUT (5 V)
  • EN (enable)
Is that correct, or would you like a different pinout?
Confirm pinout and add
Use power-good signal
Add pull-up resistor
Select vertical header

U1
SOIL 4
12VOLTEOSMINI
LCD
RELAY 1
SOIL 2
12VOLTEOS
RELAY 2
SOIL 3
DHT
SOIL1
J9
J5
J6
J3
J7
J2
J4
J1
J10
J8
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