This is an overview of the GDO SonOff WiFi basic project.
Doing a quickie summary here as new Chamberlain MyQ GDO is using security 2.0 + which is different than older Liftmaster GDO.
This Chamberlain GDO is an upgrade from the Liftmaster and Craftsman of old. Never connected or used the MyQ stuff. Personally I liked the Liftmaster and Craftman GDO's the best. Two weeks ago the Logic board went out on it. The GDO is over a year old and the logic board is only covered for 1 year. No local dealers would sell me a logic board due to saftey installation reasons (???). Ordered one from Chamberlain. The security 2.0 + stuff was more difficult to pair with the Homelink GDO buttons built in to the automobiles. The 2 wire GDO button is digital now rather than analog.
Hardware list for one GDO.
- SonOff basic WiFi module upgraded to current level of mcsTasmota via Linux serial JTAG port
- 2 reed sensors for door open and closed sensors
- DS18S20 old AAG 1-wire sensor + 4.7k Ohm pull up resistor
- Liftmaster push button power control model # 883LMW
Hardware modifications for SonOff basic Wifi module
- cut trace for 120VAC solenoid switch such that it functions as a low voltage relay
- wired GPIO #4
- connected GPIO #3 (serial IN) to #57 Door Closed reed switch
- connected GPIO #4 (aux GPIO) to #56 Door Open reed switch
- connected GPIO #14 to DS18S20 AAG temperature sensor (3.3 VDC, Ground and DQ GPIO #14 - NOTE: pull up resistor is between DQ and 3.3VDC)
Changes: Removed DS18B20 temperature board and heatsink and went to an external DS18S20 temperature sensor.
Hardware modifications to Liftmaster push button control model # 883LMW
- Tiny button that can be glued on to the SonOff WiFi basic device
- two wires are control wires to GDO (white and red)
- two wires soldered for push button on to circuit board (blue and black)
- programmed button removing current Chamberlain door button 2 wires. (Easy - just connect two wires and press button until it opens garage door).
HS3 Mosquitto Variables and button
Note: Project completed and in use with no issues. Please comment if I left anything out.
Final project did not utilize onboard temperature sensor and went to an aux DS18B20 sensor.
Included aux GPIO #4 wire use. This is optional and you can utilize JTAG GPIO ports (RX/TX instead).
Included the GDO button modifications here for a myQ Security 2.0+ digital button ($8.00 USD).
xxxxx
Doing a quickie summary here as new Chamberlain MyQ GDO is using security 2.0 + which is different than older Liftmaster GDO.
This Chamberlain GDO is an upgrade from the Liftmaster and Craftsman of old. Never connected or used the MyQ stuff. Personally I liked the Liftmaster and Craftman GDO's the best. Two weeks ago the Logic board went out on it. The GDO is over a year old and the logic board is only covered for 1 year. No local dealers would sell me a logic board due to saftey installation reasons (???). Ordered one from Chamberlain. The security 2.0 + stuff was more difficult to pair with the Homelink GDO buttons built in to the automobiles. The 2 wire GDO button is digital now rather than analog.
Hardware list for one GDO.
- SonOff basic WiFi module upgraded to current level of mcsTasmota via Linux serial JTAG port
- 2 reed sensors for door open and closed sensors
- DS18S20 old AAG 1-wire sensor + 4.7k Ohm pull up resistor
- Liftmaster push button power control model # 883LMW
Hardware modifications for SonOff basic Wifi module
- cut trace for 120VAC solenoid switch such that it functions as a low voltage relay
- wired GPIO #4
- connected GPIO #3 (serial IN) to #57 Door Closed reed switch
- connected GPIO #4 (aux GPIO) to #56 Door Open reed switch
- connected GPIO #14 to DS18S20 AAG temperature sensor (3.3 VDC, Ground and DQ GPIO #14 - NOTE: pull up resistor is between DQ and 3.3VDC)
Changes: Removed DS18B20 temperature board and heatsink and went to an external DS18S20 temperature sensor.
Hardware modifications to Liftmaster push button control model # 883LMW
- Tiny button that can be glued on to the SonOff WiFi basic device
- two wires are control wires to GDO (white and red)
- two wires soldered for push button on to circuit board (blue and black)
- programmed button removing current Chamberlain door button 2 wires. (Easy - just connect two wires and press button until it opens garage door).
HS3 Mosquitto Variables and button
Note: Project completed and in use with no issues. Please comment if I left anything out.
Final project did not utilize onboard temperature sensor and went to an aux DS18B20 sensor.
Included aux GPIO #4 wire use. This is optional and you can utilize JTAG GPIO ports (RX/TX instead).
Included the GDO button modifications here for a myQ Security 2.0+ digital button ($8.00 USD).
xxxxx
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