Msemtd HomeAuto: Difference between revisions

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* Batteries 4.5V, 3xAA
* Batteries 4.5V, 3xAA
* IC2: LP816A
* IC2: LP816A
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http://www.alldatasheet.com/view.jsp?Searchword=HCF4069UBE
http://www.alldatasheet.com/view.jsp?Searchword=HCF4069UBE

Revision as of 20:24, 15 June 2011

Michael's Home Instrumentation

  • New porch doors have required me to rethink my doorbell!
  • We can't hear people knocking on the door
  • The people at the door don't know if the old doorbell actually rang
  • The old wireless doorbell often didn't ring because the batteries were flat!
  • The wireless doorbell didn't require drilling holes in the doorframe - this is a plus
  • the 12V battery in the wireless doorbell pushbutton was expensive!

I want to do something simple with the old wireless doorbell and start to develop an extensible home automation/instrumentation project. I have a Nanode and a number of Xinos which I intend to connect on a 4-wire bus around the house.


The old doorbell

Push-button:

Chime unit:

  • PCB labelled "RL-09B 04.02.27"
  • Batteries 4.5V, 3xAA
  • IC2: LP816A
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http://www.alldatasheet.com/view.jsp?Searchword=HCF4069UBE