A display showing temperature and humidity using a heatable 7-segment display covered with a thermochromic material.Designed by Twisted & Tinned in Germany
This display is based on a thermochromic liquid crystal sheet that changes color with temperature. The sheet is attached to a PCB heater which includes heating traces that are arranged as a two digit…Read More…
This display is based on a thermochromic liquid crystal sheet that changes color with temperature. The sheet is attached to a PCB heater which includes heating traces that are arranged as a two digit 7-segment display. Each segment can be heated individually to display the temperature and humidity values of a DHT22 sensor.
The product includes
heater PCB with attached thermochromic sheet
control PCB (pre-programmed, compatible with CircuitPython)
3D printed stand
To operate the display you will need a 5V power supply with micro-USB plug that can deliver at least 2.4A (not included).
The display is only supposed to be used indoors also the thermochromic sheet should not be put in direct sunlight. The temperature range of the color changing sheet limits the usable range of the display to ambient temperatures of ~18-27°C.
The temperature unit can be changed to either °C or °F in the code.
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Randal | Feb. 20, 2023
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