4 open source boards using the SIM800C
Real designs built with the SIM800C, 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.
STM32TS Tracker
tor1kk
48 × 50 mm69 parts4LGPL-3.03
ESP32OpenAV
JIBSIL
70.3 × 53.9 mm35 parts2LMIT2
STM32Sim multiplexer
0x178F
436 × 70 mm150 parts4LApache-2.00
Cicada 4G
EnAccess
40 × 65 mm53 parts2LMIT11
The SIM800C in open source designs
The gallery holds 4 open source boards using the SIM800C from 4 GitHub repositories; a typical one measures about 59.2 × 59.5 mm and carries around 61 components.
50% are two-layer designs, the rest use four layers or more, and 100% carry an open source license.
The most starred is Cicada 4G by EnAccess.
What boards using the SIM800C are built for
SIM800C: common questions
Where can I find a SIM800C reference design?
Each of the 4 boards on this page is a real design using the SIM800C. 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 SIM800C use?
Most are built on STM32 (2) and ESP32 (1).
How big is a typical board using the SIM800C?
The median is 59.2 × 59.5 mm, and 50% are two-layer designs.
What is the most popular open source board using the SIM800C?
By GitHub stars, Cicada 4G by EnAccess, with 11 stars.
Can I simulate one of these boards using the SIM800C 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.