The ESP32 expansion base seen from above at an angle: a black board with four large corner mounting holes, two tall sockets down the middle for the ESP32, two 2.54 mm strips along each long edge with the pin names GND, 3V3, 36, 39, 34, 35, 32, 33, 25, 26, 27, 14, 12, 13 and 5V printed beside them, and a white fifteen-way ribbon socket at the far end.

You have this32base

ESP32 Expansion Base (2.54 mm)

Four bases for the 38-pin Lonely Binary ESP32. Which pins each one brings out, which way round the board goes, the fifteen-way display port they all share, and the twenty-four LEDs on the PinPulse.

GPIOs out: 24
Rows a side: 2 × 15at 2.54 mm
Display port: 15way FPC

Start here · 03 The expansion base The reference

Product questions & answers ↓

The whole handbook10 articles · 45 min 3D model (GLB)GLB · 4.2 MB CAD model (STEP)ZIP · 3.7 MB Pinout and specsThe pin table, and the questions people ask first

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ESP32 Expansion Base (2.54 mm)

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Need another

Comes in this kit — not sold separately

3-Pack ESP32 Gold Edition with 3 Expansion Bases

Order or missing parts?

Email us or reply to your order, and quote 32base — that identifies the product. If something is missing from the bag, your order is the record of what shipped.

Take it with you

Point a phone camera at the code and this page opens there. It is the same address as the one printed on your box, so it is also what to show someone you are passing the board to.