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Tuya H&T Humidity and Temperature Sensor 2 * AAA Battery Eliminator

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  • AAA-Twin-Eliminatorv2a.stl

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Publication date 2023-04-30 at 17:16
Design number 1195754

3D printer file info

3D model description

Because the Tuya H&T Sensor needs new Alkaline Batteries every 3 month (and even shorter period when it is used to control Tuya, Woox or compatible power switches), I decided to design a battery eliminator for use with larger batteries or even power supplies.
So its using a simple mini DC-DC- Stepdown converter which is connected to internal battery contacts. Needs only one screw 3mm for + pole and the DC-Stepdown converter 3 to 3.3Volts and any battery or power supply up to max voltage of DC-Stepdown converter (mostly 24V, so anything like simple LI-Ion cell or 12V DC-power supply will work fine). I made a small hole in the back cover for the power supply cable, but with small cables thats not needed, because of using mounting holes for cable insertion possible.

3D printing settings

Use your preferred standard PLA settings for your printer. I used PLA+ with 0.2mm layer height 30mm print speed, 1.2mm shell thickness and 100% infill, because its small and wont use much PLA...

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