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Five small black and green rectangular circuit boards with gold pins on one side

KEHIPI

KEHIPI 5PCS ESP32 Breakout Board GPIO 1 into 2 for 38PIN No Mounting Hole Version Development Board

SKU CH-0Y1A-ZP1QP

Five-piece GPIO expander splits each pin into two on 38-pin narrow ESP32 boards without mounting holes

  • Expands each GPIO to two pins for flexible wiring
  • Fits 38-pin narrow ESP32 boards without mounting holes
  • Two-layer FR-4 PCB with tin-plated pads for reliable connections
  • Compact 7.7 × 6.3 × 1.1 cm size suits breadboard layouts
  • Pack of five boards supports multiple smart-home projects

Five-Pack GPIO Expander

The KEHIPI five-piece set gives each ESP32 pin a second connection point, letting makers reuse every GPIO in smart-home prototypes without a breadboard. It targets hobbyists who need quick, solder-free pin duplication on compatible 38-pin boards.

Thermals and Power

The FR-4 PCB with tin-plated pads adds negligible resistance, so normal signal currents produce no measurable heat and the board draws no power of its own. Operation stays silent because there are no active components or fans on the module.

Build Integration

Each board measures 7.7 by 6.3 by 1.1 cm with a 1.7 mm thickness and matches the narrow 38-pin ESP32 footprint that lacks mounting holes. It cannot be used with the wider DevKit V1 variant, so buyers must verify pin spacing before ordering.

Highlights

  • Expands each GPIO to two pins for flexible wiring
  • Fits 38-pin narrow ESP32 boards without mounting holes
  • Two-layer FR-4 PCB with tin-plated pads for reliable connections
  • Compact 7.7 × 6.3 × 1.1 cm size suits breadboard layouts
  • Pack of five boards supports multiple smart-home projects

Specifications

BrandAITRIP

Questions about this item

How do I install this breakout board onto my 38-pin ESP32 without damaging the pins?

Align the board carefully with the narrow 38-pin spacing and press straight down; the step people get wrong is forcing it onto a DevKit V1 which has wider pin spacing and mounting holes.

Will the tin-plated pads need re-tinning or replacement after repeated prototype cycles?

The FR-4 board with tin-plated pads is rated for normal soldering heat; pads only need attention if they become oxidized or physically lifted after many insertions.

What electrical limit appears first when all expanded GPIO pairs draw current continuously?

The ESP32's own per-pin and total GPIO current limits will be reached before the breakout traces, since the board simply fans one pin out to two without adding drive capability.

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