Entry

003

Wireless keypad · 2025

Pipar Chip

Pipar Chip keypad standing on a wooden desk: twelve clear PG1316S switches on a green PCB in a dark 3D-printed case — Fig. 003.0photo

Twelve Kailh PG1316S switches in a 4 × 3 grid. Wireless, backlit, with three spare LEDs to program.

A 12-key wireless keypad built around Kailh PG1316S switches and an ISP1807 module. A white LED behind every key, two status LEDs for charging and errors, and three spare LEDs you can program. 0603 passives, SOD-523 diodes, and a 500 mAh battery sized for backlit use.

Status: Built

PCB & firmware on GitHub

§ Specification

Technical · revision v2

Layout: 4 × 3 (12 keys)
MCU: ISP1807 (nRF52840 SiP)
Switches: Kailh PG1316S
Backlight: 12 × white LED + 3 indicator LEDs
Battery: 500 mAh LiPo
Components: 0603 / SOD-523

§ Plates

2 additional figures

Pipar Chip 12-key PCB render, top view — Fig. 003.1render

Pipar Chip PCB render, back side showing components — Fig. 003.2render

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Pipar Flake