17 open source boards using the DS3231M
Real designs built with the DS3231M, 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.
V5 main
zynthian
245.2 × 100 mm144 parts2LNo license154
AVR/ArduinoPicon one hw
fm4dd
117.8 × 168 mm59 parts2LCERN-OHL-1.223
AVR/ArduinoKicad Smart Watch
AFLProjects
36.4 × 29.4 mm48 parts2LNo license12
ESP32Zeen-AI-Plug
ampnics
105 × 58 mm71 parts2LNo license9
ESP32Kiki player
alaotach
86 × 109.7 mm42 parts2LNo license2
PICPcb pi onoff
bablokb
65 × 30 mm29 parts2LCC-BY-SA-4.02
ESP32PressLog
bansalsaksham
117 × 81.5 mm45 parts2LNo license1
CoreLight
llextv
170.7 × 119 mm192 parts4LNo license0
ESP8266MB02A2
GOS2022
130 × 105 mm96 parts2LMIT0
AVR/ArduinoMain board
ARTS-Laboratory
40.6 × 82.6 mm32 parts2LCC-BY-SA-4.00
AVR/ArduinoRaindrop
30.5 × 67.3 mm15 parts2LCC-BY-SA-4.00
Raspberry PiInki
c0de111
47.2 × 55.5 mm54 parts2LApache-2.033
AVR/ArduinoKicad Smart Watch old
31.1 × 26 mm39 parts4LNo license12
AVR/ArduinoRainGauge
64 × 40.5 mm14 parts2LCC-BY-SA-4.00
AVR/ArduinoMainboard
41.9 × 55.9 mm12 parts2LCC-BY-SA-4.02
AVR/ArduinoWater sensor
48.3 × 101.6 mm12 parts2LCC-BY-SA-4.02
AVR/ArduinoWater sensor1
48.3 × 58.4 mm11 parts2LCC-BY-SA-4.02
The DS3231M in open source designs
The gallery holds 17 open source boards using the DS3231M from 13 GitHub repositories; a typical one measures about 64 × 67.3 mm and carries around 42 components.
88% are two-layer designs, the rest use four layers or more, and 59% carry an open source license.
The most starred is V5 main by zynthian.
Parts used alongside the DS3231M
Microcontrollers on boards using the DS3231M
What boards using the DS3231M are built for
DS3231M: common questions
Where can I find a DS3231M reference design?
Each of the 17 boards on this page is a real design using the DS3231M. 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 DS3231M?
The AMS1117-3.3, ESP32-S3-WROOM-1, Arduino_Nano_v3.x and RV-3028-C7 appear in the most repositories here.
Which microcontrollers do boards using the DS3231M use?
Most are built on AVR/Arduino (9), ESP32 (3), ESP8266 (1) and PIC (1).
How big is a typical board using the DS3231M?
The median is 64 × 67.3 mm, and 88% are two-layer designs.
What is the most popular open source board using the DS3231M?
By GitHub stars, V5 main by zynthian, with 154 stars.
Can I simulate one of these boards using the DS3231M 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.