5 open source boards using the Si7021
Real designs built with the Si7021, 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.
Signpost
lab11
68.1 × 66 mm61 parts4LApache-2.097
AVR/ArduinoBOX-2252
fallberg
50.5 × 70 mm60 parts2LCERN-OHL-1.27
STM32TemperatureHumidityEPD
kevinkessler
48 × 33 mm22 parts2LGPL-3.02
AVR/ArduinoLE-BOX-0028
76 × 96 mm60 parts2LCERN-OHL-1.27
AVR/ArduinoMySensorsNode
50 × 50 mm58 parts2LCERN-OHL-1.27
The Si7021 in open source designs
The gallery holds 5 open source boards using the Si7021 from 3 GitHub repositories; a typical one measures about 50.5 × 66 mm and carries around 60 components.
80% are two-layer designs, the rest use four layers or more, and 100% carry an open source license.
The most starred is Signpost by lab11.
Microcontrollers on boards using the Si7021
What boards using the Si7021 are built for
Si7021: common questions
Where can I find a Si7021 reference design?
Each of the 5 boards on this page is a real design using the Si7021. 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 Si7021 use?
Most are built on AVR/Arduino (3) and STM32 (1).
How big is a typical board using the Si7021?
The median is 50.5 × 66 mm, and 80% are two-layer designs.
What is the most popular open source board using the Si7021?
By GitHub stars, Signpost by lab11, with 97 stars.
Can I simulate one of these boards using the Si7021 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.