ESP32 One Mini Development Board

This compact development board utilises an ESP32 processor for a very low-power project foundation including WiFi, Bluetooth, MicroSD storage, an onboard microphone and the option of a 2MP camera (select version above before adding to cart)!

With the added flexibility of direct

LiPo

powering and charging thanks to the dedicated JST (PH2.0) connector, this mini dev board is great for remote, low-power monitor projects where size and power consumption are key.

Whilst this won’t run a full operating system like the Raspberry Pi, the ESP One is compatible with Arduino libraries and can be programmed using popular options such as Microsoft Visual Studio Code. You can even use most of your existing Raspberry Pi HATs and pHATs with this board thanks to the standardised 40-pin connector format.

Other great features include the colour-coded header, onboard reset button, IPEX antenna connector, LED indicators and more!

Features

• (Optional) OV2640 camera – supports applications such as image recognition, voice processing etc
• Digital microphone onboard
• Standard 40-pin GPIO header – compatible with most Raspberry Pi HATs
• Integrated Li-ion battery boost charging manager – supports battery charging/discharging
• Board can also be powered via the Micro-USB connection
• Compatible with Arduino and ESP-IDF software SDK – seamlessly connecting with ESP-WHO applications
• Onboard 8MB PSRAM, 4MB FLASH storage
• Supports SD storage
• CP2102 USB to UART converter – for serial debugging/programming
• 4x LED indicators – easy to check the operating status

• Online development resources and manual

Package Contents

• 1x ESP32 One main unit (with/without camera – select above)
• 1x USB-A to micro-B cable
• 1x Screws pack

What’s Onboard

• 1) ESP32-D0WDQ6-V3 processor
• 2) 40MHz passive crystal oscillator
• 3) Reset button
• 4) CP2102
  • USB to UART converter
• 5) Indicators
  • PWR: power indicator
  • LED: PWM control indicator
  • DONE: Li-ion battery fully charged
  • CHG: Li-ion battery charging
• 6) CS8501 Li-ion battery charge manager
• 7) 32.768KHz passive crystal oscillator
• 8) OV2640 camera (optional)
  • 2MP (UXGA 1622×1200)
• 9) MSM261S4030H0R digital microphone
  • Sensitivity -26dBFS @1kHz 1Pa
• 10) RT9166A-28PXL power chip
• 11) RT9193-33 power chip
• 12) RT9166A-12PXL power chip
• 13) ESP-PSRAM64H RAM
• 14) W25Q32JVSSIQ FLASH
• 15) Raspberry Pi GPIO header
  • Compatible with Raspberry Pi HATs
• 16) Micro SD card slot
• 17) IPEX antenna connector
• 18) USB TO UART port
• 19) 4.2V Li-ion battery connector
  • PH2.0 single cell
• 20) DVP camera interface

Resources

• Product Wiki and user manual

Pinout

Specifications

• WiFi: 802.11b/g/n
• Bluetooth: Bluetooth 4.2, including traditional BR/EDR, and BLE low-energy
• Processor: Xtensa LX6 dual-core processor @240MHz
• Camera (optional – select above): OV2640 (UXGA 1622×1200)
• SRAM: 520KB+8MB
• Flash: 448KB+4MB
• Input Voltage: 3.3V~5V
• Operating Voltage: 3.3V
• Charge Current: 1A@5V
• Overall Consumption: 7.7mA@5V (ESP32 under deep sleep)
• Dimensions: 65mm × 30.5mm
• Operating Temperature: -40℃ ~ 85℃