Sensebender Micro & External Sensors (ds18b20)

[Marcus Schmidke]

Hello all,

I'm succesfully using some Sensebender boards with 2 AA rechargeable batteries each, and I'm very pleased about the function and battery lifetime. It's very far beyond my expectations!

But until now, I only used the internal temperature sensor. Now I want to use an external sensor (because the signal quality out of my fridge is really bad), an ds18b20 for example.

I'm wondering if that's possible since the sensor has a voltage minimum around 3 Volts, and my batteries supply at most 2.6V.

Any experiences out there? Or some hints for me? What can I do?

Regards,

Marcus.

[mfalkvidd]

Get a sensor that supports lower voltages or get a step-up.

Earlier discussions on the same topic:
https://forum.mysensors.org/topic/3801/witch-temp-hum-sensor-is-best-to-use-for-battery-powered-sensors/
https://forum.mysensors.org/topic/3203/cheap-good-boost-converter-and-good-temperature-sensors/

https://forum.mysensors.org/topic/2027/test-of-step-up-modules-sparkfun-pololu-china-module-any-other/
https://forum.mysensors.org/topic/444/battery-powered-motion-sensor
https://forum.mysensors.org/topic/171/efficiency-of-voltage-boosters