9 open source boards using the HC-SR04
Real designs built with the HC-SR04, 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.
ESP32PCBbot
halherta
140 × 120 mm60 parts2LMIT1
ESP32SmartGeiger
ahnaf-tahmid-chowdhury
94 × 32 mm21 parts2LApache-2.01
ESP32Blink
Rando1f
74.9 × 82.6 mm5 parts2LMIT1- schematic only · 28 partsAVR/Arduino
Cartesian Robot 3D Model
Mohammed-Shehsin
28 partsNo license1 
ESP32Autonomous seed planting robot
HusseinAlwali
81.6 × 144.1 mm25 parts2LMIT0
AVR/ArduinoSPECTRODRIVE
omersoner-dev
153.5 × 161.3 mm23 parts2LNo license0- schematic only · 4 partsAVR/Arduino
Irisbin
shrsauryam-spec
4 partsNo license0 
Ultrasonic
Kushal-Sachdeva78
120 × 120 mm5 parts2LMIT1
Ultrasonic
pioneers
40.5 × 45.8 mm4 parts2LNo license8
The HC-SR04 in open source designs
The gallery holds 9 open source boards using the HC-SR04 from 9 GitHub repositories; a typical one measures about 94 × 120 mm and carries around 21 components.
100% are two-layer designs, the rest use four layers or more, and 56% carry an open source license.
The most starred is Ultrasonic by pioneers.
Microcontrollers on boards using the HC-SR04
What boards using the HC-SR04 are built for
HC-SR04: common questions
Where can I find a HC-SR04 reference design?
Each of the 9 boards on this page is a real design using the HC-SR04. 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 HC-SR04 use?
Most are built on ESP32 (4) and AVR/Arduino (3).
How big is a typical board using the HC-SR04?
The median is 94 × 120 mm, and 100% are two-layer designs.
What is the most popular open source board using the HC-SR04?
By GitHub stars, Ultrasonic by pioneers, with 8 stars.
Can I simulate one of these boards using the HC-SR04 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.