Freddie factors to the present temperature on the Mercury Thermometer
June sixteenth, 2022—
Almost everyone seems to be acquainted with the mercury thermometer and the way it makes use of the growth of the factor to show ambient temperatures. However in Instructables consumer TurboSnail’s newest undertaking, they tried to show this idea on its head by making a thermometer that makes use of the enduring Freddie Mercury to indicate the temperature with out the necessity for the poisonous liquid metallic.
The plan for this undertaking concerned a fairly easy circuit. An Arduino Nano Each would learn the present temperature and humidity ranges utilizing an Adafruit AHT20 sensor module and map them to Freddie’s arms and a set of LEDs, respectively. To assist cut back present consumption on this battery-powered show, the servo motor solely receives energy when a transistor is switched on by the microcontroller for transient intervals of time.
After assembling the circuit and getting the code to work, TurboSnail then moved their consideration to designing a cool-looking PCB that options the dial face full with temperatures and sayings, a smaller humidity scale on the backside, and a big silkscreen determine of Freddie together with pads on the again for soldering the bigger parts. Freddie’s arm was 3D-printed and hooked up to the micro servo motor whereas the Nano Each was changed by a lower-power DIY Uno board. Final of all, the PCB was fitted inside a customized wood enclosure and switched on.
To see extra concerning the Mercury Thermometer, you possibly can learn TurboSnail’s write-up right here on Instructables or watch the demo video under!