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Hackaday
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Image Credit: Hackaday
Tiny NFC-Powered Keychain Thermometer
- The keychain 'NFC_temp' is a battery-free temperature sensing gadget.
- It harnesses energy from an NFC field to power itself for temperature readings.
- The device uses an ATTiny1626 microcontroller, a TMP117 thermometer, and an RF430CL330H NFC IC.
- It has a self-designed antenna and displays temperature with an accuracy of ±0.1 °C.
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