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Some updates again.

 

Current version has following features:

2 temperature sensors.

Ambient/Notification RGB LED.

PIR sensor.

XBee to control lights in other room.

This is first version of my home monitoring system. Starting with PIR sensor and temperature sensor.

Did some changes to my system.

 

Current version does following:

2 temperature sensors.

Ambient/Notification RGB LED.

LED stays red when there is unread mail in mailbox.

Just a little dust and hair on the sensor.

DPWC112000 - Wall mounting Temperature (-10T60 °C) and humidity (10 to 90% rH) sensor

 

The CAREL DP series electronic probes are designed for air-conditioning and air handling, heating and refrigeration applications, to be used in combination with the corresponding CAREL controllers. Versions are available for rooms, industrial environments and ducts. These differ in terms of assembly, the type of output signal and the models: temperature, humidity or combined. Versions are available with temperature output with resistive NTC.

Verifying the pin-layout and voltage on the temperature sensor port

The completed temperature probe for a 4-button RC battery charger

Parts needed to build your own temperature sensor for a 4-button RC battery charger

Pin-layout of the temperature sensor port of a 4-button RC battery charger

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