Home › Expansion › ESP32-C3 OLED Expansion Base, 2.54 mm Pins with LiPo Charger

The ESP32-C3 OLED expansion base from above: a black board with two black sockets in the middle, a yellow female header and a row of pins on each side, a white battery connector and a slide switch.

The ESP32-C3 OLED expansion base tilted away from the camera on its left edge.

The back of the ESP32-C3 OLED expansion base: lonely binary and ESP32-C3 OLED EXPANSION BOARD printed down the middle with the display, I2C and LED pin notes.

The ESP32-C3 OLED expansion base from an oblique angle, showing the pins, the sockets and the battery connector.

3D model of the ESP32-C3 OLED expansion base

Description

The plainest base for the ESP32-C3 OLED: pins and sockets. The board plugs into the two black sockets in the middle, and each of its sixteen holes comes out again on standard 2.54 mm headers, with a LiPo connector, charger and power switch built in.

Highlights

Pins and sockets. Eight male pins and eight female sockets down each side, wired together, for jumper wires and breadboards.
Battery power. JST PH 2.0 connector, TP4054 charger and a slide switch. Plug in USB with the switch ON and a cell connected to charge it.
Battery monitor. An open solder jumper connects a divider across the cell to GPIO 2, so a sketch can read its own battery level.
Two 4.8 mm mounting holes, 16 mm apart.

In the box

1 × ESP32-C3 OLED expansion base, headers fitted

The ESP32-C3 OLED board, the battery and cables are not included.

Specifications

Connectors: 2 × 8 male pins and 2 × 8 female sockets, 2.54 mm pitch
Battery: JST PH 2.0, single 3.7 V lithium cell with a protection circuit
Size: 39.5 × 32.5 mm, 10.1 mm tall from the underside

Seat the board with its antenna at the power-switch end and its USB-C socket at the battery-connector end.

Smooth operation across the board

Nice three pack. Used all three and they work well.

Wrong part sent

The wrong part was sent, 4MB version sent, I ordered 16MB. I emailed the company last Wednesday July 1 and have heard nothing.

DS18B20 temp sensor monitor with ESP32-S3

Appriciate the quality and service from Lonely Binary. Second time purchasing from them and wont be the last. As a beginner in electronics world, their website has helped me a lot. Not many places you can find the required information, explanation and the materials you need at one spot. Keep up the good work lads.

Screw Terminal Boards

I started by emailing the company wasking for the standalone screw terminal boards for the ESP32-C3 . I really hope you start stocking them stateside, but thank you for shipping them so quickly and listing them on your site as well.