This is my new small Window/Door Sensor.

It works with two Reed Sensors. Additional need is a Magnet.

General

• Powered by CR2032 3V
• Size 21 x 69 (mm)
• Almost SMD 0805
• Atmel328p TQFP32
• NRF24I01 smd
• ATSHA204A chip
• FTDI, ISP
• REED Sensors

Description The sensor works with 1 or 2 reed sensors. Why two? This answer is simple. . if you have a Window with two wings you can place the sensor in the middel and it will detect the state of booth.

Settings

• Use Sensebender Micro bootloader
• Set Fuses before upload bootloader
• FUSES: L: 0XDE // H: 0XD2 // E: 0X07 (disabled BOD/8Mhz external clock)
• Set Fuses again, arduino IDE will override it with the default sensebender fuses or modify the board settings in Arduino IDE

Version

Final (08.12.2016):

• Test PCB works well
• Add Code
• Add 3D printable Case

Beta (14.11.2016):

• Redesigned
• Remove step-up and Flash (not usable - save battery)
• Upload new PCB Files
• Upload new BOM

Alpha-2 (30.10.2016):

• Update PCB: Missmatch in Lib fixed
• Prototyp PCB in production

Alpha (27.10.2016):

• Update PCB: Clearence
• Update Shematic: Batt Mon./ prepare ARef for internal VRef
• Test-PCB Final!
• Update BOM

Pre-Alpha:

• Shematic and pcb design ready
• Gerber Files Uploaded

license

Copyright Takero (2016). CERN Open Hardware Licence v1.2

Thanks to

• MySensors Team / You are great
• @Scalz: Thanks for the inspiration