Circuit Documentation
Summary
This document provides a detailed overview of a circuit that includes an ESP32 microcontroller, a DHT22 temperature and humidity sensor, an MT3608 DC-DC step-up converter, and a Polymer Lithium Ion Battery. The circuit is designed to power the ESP32 and DHT22 using the battery, with the MT3608 boosting the battery voltage to a suitable level for the ESP32.
Component List
DHT22
- Description: Temperature and Humidity Sensor
- Pins: +, Out, -
ESP32
- Description: Microcontroller with Wi-Fi and Bluetooth capabilities
- Pins: EN, VP, VN, D34, D35, D32, D33, D25, D26, D27, D14, D12, D13, GND, VIN, 3V3, D15, D2, D4, RX2, TX2, D5, D18, D19, D21, RX0, TX0, D22, D23, BOOT
MT3608
- Description: DC-DC Step-Up Converter
- Pins: VOUT+, VIN+, VOUT-, VIN-
Polymer Lithium Ion Battery - Generic
- Description: Rechargeable Battery
- Pins: GND, VCC
Wiring Details
DHT22
- +: Connected to ESP32 pin 3V3
- Out: Connected to ESP32 pin D22
- -: Connected to ESP32 pin GND
ESP32
- 3V3: Connected to DHT22 pin +
- D22: Connected to DHT22 pin Out
- GND: Connected to DHT22 pin - and MT3608 pin VOUT-
- VIN: Connected to MT3608 pin VOUT+
MT3608
- VOUT-: Connected to ESP32 pin GND
- VOUT+: Connected to ESP32 pin VIN
- VIN+: Connected to Polymer Lithium Ion Battery pin VCC
- VIN-: Connected to Polymer Lithium Ion Battery pin GND
Polymer Lithium Ion Battery - Generic
- GND: Connected to MT3608 pin VIN-
- VCC: Connected to MT3608 pin VIN+
Code
There is no code provided for this circuit.
This document provides a comprehensive overview of the circuit, including a summary, detailed component list, wiring details, and code documentation. This should serve as a useful reference for understanding and replicating the circuit.