Olimex ESP32-S2-WROVER-DevKit-Lipo-USB

The ESP32-S2 is a highly integrated, low-power, single-core Wi-Fi Microcontroller SoC, designed to be secure and cost-effective, with a high performance and a rich set of IO capabilities.

Compared to the ESP32, the ESP32-S2 is only single core and misses the Ethernet and Bluetooth connectivity, but has many more GPIOs which were missing in the ESP32. The typical use is for WiFi enabled devices. ESP32-S2 supports low power modes including deep sleep that goes as low as 20uA.

The Olimex ESP32-S2-DevKit-Lipo-USB board is pin-to-pin compatible with Espressif ESP32-Saola-1, but adds a LiPo battery charger and the ability to work on LiPo power when external power supply goes missing, allowing handheld applications and increasing availability and reliability.

The board uses the built-in MicroUSB interface and can work as host and device, even when powered by the Li-Po battery (be sure to grab a micro-USB cable as one isn’t included).

All components used are with industrial grade operating temperature -40+85C.

This version is the ESP32-S2-WROVER-DevKit-LiPo-USB, which comes with an ESP32-S2-WROVER module with 4MB Flash and 2MB PSRAM. Power consumption of the ESP32-WROVER-DevKit-Lipo is 65 uA in deep sleep mode.

Features

• ESP32-S2-WROVER module
• RGB LED
• User button, Reset button
• Micro USB-OTG connector
• Can work as USB host or USB device
• Built-in LiPo battery charger
• LiPo battery connector
• PCB dimensions: (1.9 x 1.1)’ ~ (4.8 x 2.8)cm
• Operating temperature: -40+85C

Resources

• Arduino IDE installation guide
• Arduino demo code – check DOCUMENTS section above for installation guide
• ESP-IDF has support for ESP32-S2
• ESP32-S2 resources web page
• ESP32-S2-Devkit-Lipo-USB GPIOs map
• ESP32-S2-Saola-1 web page
• ESP32-S2-DevKit-Lipo-USB schematic in PDF format
• ESP32-S2-DevKit-Lipo-USB GitHub repository with CAD files
• ESP32-S2-DevKit-Lipo-USB European Declaration of Conformity
• ESP32-S2-DevKit-Lipo-USB UKCA Declaration of Conformity

FAQ

• I can’t program the board, it doesn’t want to connect to the software. Drivers and environment seem fine. What can be the problem?
  • Remember to put the board in bootloader mode. This is done manually via the buttons – press and hold button BUT1, press and release button RST1, release button BUT1. After programming is done, remember to manually reset the board via RST1 button to leave bootloader mode.

Package Contents

• 1x Olimex ESP32-S2-WROVER-DevKit-Lipo-USB