3 open source boards using the HDSP-7503
Real designs built with the HDSP-7503, 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.
STM32Quad adsr
JordanAceto
71.1 × 99.1 mm197 parts2LNo license5- schematic only · 112 parts
MSAP-1
mehrantsi
112 partsMIT1 
ESP32Menelaos v2
acastles91
99.5 × 81 mm82 parts2LNo license0
The HDSP-7503 in open source designs
The gallery holds 3 open source boards using the HDSP-7503 from 3 GitHub repositories; a typical one measures about 85.3 × 90 mm and carries around 112 components.
100% are two-layer designs, the rest use four layers or more, and 33% carry an open source license.
The most starred is Quad adsr by JordanAceto.
Parts used alongside the HDSP-7503
What boards using the HDSP-7503 are built for
HDSP-7503: common questions
Where can I find a HDSP-7503 reference design?
Each of the 3 boards on this page is a real design using the HDSP-7503. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
Which microcontrollers do boards using the HDSP-7503 use?
Most are built on ESP32 (1) and STM32 (1).
How big is a typical board using the HDSP-7503?
The median is 85.3 × 90 mm, and 100% are two-layer designs.
What is the most popular open source board using the HDSP-7503?
By GitHub stars, Quad adsr by JordanAceto, with 5 stars.
Can I simulate one of these boards using the HDSP-7503 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.