6 open source boards using the 78M05
Real designs built with the 78M05, from public GitHub projects: a quick way to see how others power, decouple and connect it. Each board comes with its KiCad files, full parts list and a render — and you can simulate its firmware on HardLabs.
Zx multisound
UzixLS
170 × 64 mm173 parts2LMIT37- schematic only · 102 parts
Eurorack-PT2399-Delay
DIYSynthMNL
102 partsNo license10 - schematic only · 69 partsRP2040/RP2350
Pi-Pico-Random-Looping-Sequencer
69 partsMIT4 - schematic only · 112 parts
Eurorack-Electric-Druid-VCDO1
112 partsCC-BY-NC-4.03 - schematic only · 70 parts
Eurorack-3340-VCO
70 partsNo license2 
Cspcb
smooker
90 × 135.4 mm24 parts2LNo license0
The 78M05 in open source designs
The gallery holds 6 open source boards using the 78M05 from 6 GitHub repositories; a typical one measures about 130 × 99.7 mm and carries around 86 components.
100% are two-layer designs, the rest use four layers or more, and 33% carry an open source license.
The most starred is Zx multisound by UzixLS.
Microcontrollers on boards using the 78M05
What boards using the 78M05 are built for
78M05: common questions
Where can I find a 78M05 reference design?
Each of the 6 boards on this page is a real design using the 78M05. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
What parts are used alongside the 78M05?
The 79M05, TL074 and TL072 appear in the most repositories here.
Which microcontrollers do boards using the 78M05 use?
Most are built on RP2040/RP2350 (1).
How big is a typical board using the 78M05?
The median is 130 × 99.7 mm, and 100% are two-layer designs.
What is the most popular open source board using the 78M05?
By GitHub stars, Zx multisound by UzixLS, with 37 stars.
Can I simulate one of these boards using the 78M05 before building it?
Yes. HardLabs turns a board's netlist and BOM into a working simulation, so you can boot and test firmware against it with no hardware on your desk.