The ESP32-WROOM-32 Development Board is basically a development/breakout board for Espressif’s ESP32-WROOM-32 series chip. It features both WiFi and Bluetooth connectivity, has 4MB of flash and 520kB of SRAM which can be used to store custom code, along with many more features which you can read about below. Programming one of these is very simple and can be done via the USB Type-C socket which makes use of the on-board CH340 USB to UART chip to communicate with the ESP module.
The CH340 variant is slightly cheaper than the standard “ESP32-WROOM-32 Dev Board” which uses a more expensive USB to UART chip.
Features / Specs
- Board Model: ESP32-WROOM-32 (CH340 Variant)
- Main Module: Espressif ESP32-WROOM-32 (ESP32-D0WDQ6) (80 – 240MHz, Dual-Core, 32-Bit LX6 Microprocessor)
- External Flash Memory: QSPI 32-Mbit (4-MB)
- SRAM: 520kB
- USB to UART Interface IC: WCH CH340C
- USB Connector Type: USB Type-C
- Supply Voltage: 5 – 9VDC
- On-Board Regulator: AMS1117 (Fixed 3.3V Version)
- ESP Module Operating Voltage: 3.3VDC
- Operating Temperature: -40 to +85°C
- Number Of Pins: 30
- Pin Pitch: 2.54mm
- Spacing Between Pin Rows (Pin Centre to Centre): ~25.4mm (Breadboard Compatible)
- Board Dimensions (Including Pin Headers): ~ (53.5mm x 28.5mm x 13mm)
- Mounting Hole Diameter: ~3.1mm
- Mounting Hole Spacing (Centre to Centre): Long Side: ~46.9mm / Short Side: ~23.1mm
- WiFi Protocols: 802.11 b/g/n (802.11n up to 150 Mbps)
- Frequency Range: 2.4GHz ~ 2.5GHz
- Wireless Network Modes: Station / SoftAP / SoftAP + Station
- Hardware Features: UART / QSPI / I2C / I2S / SDIO / PWM / ADC / DAC / Capacitive Touch Sensor / Hall Sensor / Temperature Sensor / GPIO
- Network Protocols: IPv4 / IPv6 / SSL / TCP / UDP / HTTP / FTP / MQTT
- WiFi Security Modes: WPA / WPA2 / WPA2-Enterprise / WPS
- Bluetooth Protocols: Bluetooth v4.2 BR/EDR and BLE specification