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Desktop-Humidity and-Temperature sensor and display

firesareba·Desktop-Humidity-and-Temperature-sensor-and-display·PCB/HumidityDetectorDesktop.kicad_pcb

Desktop-Humidity and-Temperature sensor and display PCB layout, top view — open source RP2040/RP2350 board by firesareba

About the Desktop-Humidity and-Temperature sensor and display PCB

Desktop-Humidity and-Temperature sensor and display is an open source RP2040/RP2350 PCB design by firesareba, published on GitHub. It is a 2-layer board measuring 84.8 × 23 mm, with 4 components from 4 distinct parts.

Its main chip is the XIAO-RP2040-DIP, from the RP2040/RP2350 family. By type, the board carries 3 ICs and 1 resistor.

It belongs with the sensors and displays & leds designs in this gallery.

From the project

A Simple Humidity and Temperature sensor and display using the DHT22 TEMP/HUM sensor displaying on the 0.91" OLED used in the Hackpad aswell as the RP2040 used in the same hackpad. Goes on your desk!

A Simple Humidity and Temperature sensor and display using the DHT22 TEMP/HUM sensor displaying on the 0.91" OLED used in the Hackpad aswell as the RP2040 used in the same hackpad. Goes on your desk\!

I wanted to create a highly compact and portable standalone environmental monitor that could provide accurate temperature and humidity readings without needing a host computer. I used the Seeed XIAO RP2040 for its small footprint and native CircuitPython support which made integration with the SSD1306 OLED and DHT22 sensor straightforward.

Desktop-Humidity and-Temperature sensor and display, from the project README
From the project README

Main components on the Desktop-Humidity and-Temperature sensor and display

XIAO-RP2040-DIP

Desktop-Humidity and-Temperature sensor and display bill of materials (BOM)

4 components, 4 distinct parts.

QtyPartRefs
1
XIAO-RP2040-DIP
U1
1
~
U2
1
~
U3
1
4.7k
R1

Desktop-Humidity and-Temperature sensor and display design files

The KiCad project lives in the firesareba/Desktop-Humidity-and-Temperature-sensor-and-display repository on GitHub; these links point at the commit this page was built from.

Desktop-Humidity and-Temperature sensor and display: common questions

What microcontroller does the Desktop-Humidity and-Temperature sensor and display use?

The Desktop-Humidity and-Temperature sensor and display is built around the XIAO-RP2040-DIP, from the RP2040/RP2350 family.

How big is the Desktop-Humidity and-Temperature sensor and display PCB?

The Desktop-Humidity and-Temperature sensor and display measures 84.8 × 23 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Desktop-Humidity and-Temperature sensor and display?

4 components, from 4 distinct parts. The full bill of materials is listed on this page.

Where can I download the Desktop-Humidity and-Temperature sensor and display design files?

From the firesareba/Desktop-Humidity-and-Temperature-sensor-and-display repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Desktop-Humidity and-Temperature sensor and display design in my own project?

The repository has no license, so all rights stay with firesareba. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Desktop-Humidity and-Temperature sensor and display without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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