Tools, APP Software Used etc.
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KiCad 9.0 |
Description
4 Channel Signal Relay Switching Board
4 Channel Signal Relay Switching Board
A simple opto isolated 4 channel relay switch board for small signals.
This board contains mounting holes for the PT2258 Volume Controller, so both can be stacked.
This is an old project that I had not published until now. Did some small clean ups, organization and silkscreen updates.
BOM is set for 12V relays, but can be used with other voltages by changing the relays accordingly.
Schematic and Layout
Schematics
4ch_signal_relay_switch_v1.1_schematic.pdf
GitHub
https://github.com/kurozz/4ch_signal_relay_switch
Nov 23,2025
191 views
4 Channel Signal Relay Switching Board
A 4 channel relay switch for audio or other low current signals, up to 2A.
191
1
0
Published: Nov 23,2025
Standard PCB
Download Gerber file 3
BOM(Bill of materials)
Centroid file
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Only PCB
PCB+Assembly
*PCBWay community is a sharing platform. We are not responsible for any design issues and parameter issues (board thickness, surface finish, etc.) you choose.
Under the
Attribution-MIT
License.
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