2 layers100.3 × 38.1 mm
Relay shield
carlos-jenkins/relay-shield
Relay and current sensor shield for Spark Core
25 parts10GPL-2.0
Overview
The MH4 is a connector Accessory made by Altech with 5 pins.
JLCPCB lists it (part C20177807). 19 open-source boards in 16 repositories on GitHub use it.
Symbol
The library has no symbol for this part yet.
Footprint
The library has no footprint for this part yet.
Order codes
1Open-source boards using it
All 19- 2 layers102.5 × 75 mm
- 2 layers275.9 × 117.8 mm
Reform2-keyboard3
jackhumbert/reform
This is the main repository for the MNT Reform open source laptop.
379 parts1 - 2 layers50.4 × 75 mm
Open-01-pcb
RonishNadar/open-01
OPEN-01 - Omnidirectional Perception & Embedded Navigation. An open-source, low-cost ROS2 robot platform.
64 parts1Apache-2.0 - 4 layers58.5 × 50.3 mm
- 2 layers83 × 55 mm
- 2 layers99.1 × 87.9 mm
Digital theremin kicad
ncssrtnvnthm/WATCH2026-theremin
Theremin project for the 2026 WATCH program
40 parts - 2 layers94 × 71 mm
Questions
Where is the MH4 datasheet?
Altech publishes it: the Datasheet link on this page opens it.
Where can I order the MH4?
JLCPCB lists it as part C20177807, with 0 in stock; the sellers' links on this page open their listings.
Which open-source boards use the MH4?
19 boards in 16 repositories on GitHub; the most starred are listed on this page, with their KiCad files.