py-momit-cool-remote is a Python 3 library for remotely controlling your air conditioning unit through the use of the Momit Cool.

The Momit Cool is a small device that can be attached to your AC, allowing you to control it from your smart phone. In order to accomplish remote control from anywhere, commands are sent to their central server, which then sends them to your Momit Gateway device. py-momit-cool-remote communicates directly with the Momit Gateway, completely circumventing Momit's servers.

https://www.momit.com/en-ro/products/cool

Note: Python 3.5 and newer only.

Installation

$ pip install py-momit-cool-remote

Make sure that pip refers to the pip installation for Python 3. You might have to install the package using pip3.

Example usage

from momitcool import MomitCool

cool = MomitCool('192.168.3.164')
cool.cool() # turn on in cooling mode
cool.off() # turn off
cool.temperature() # get current temperature
cool.mode() # cooling/heating/off

$ momit-cool --host 192.168.3.164 --cool
$ momit-cool --host 192.168.3.164 --off
$ momit-cool --host 192.168.3.164 --temperature
$ momit-cool --host 192.168.3.164 --mode

Details

The Momit Cool is a commercial, closed source product that does not have any documentation on how communication is performed. All of the information provided in this repository was found by reverse engineering the protocol. I uncovered most of the information by ARP poisoning and intercepting the traffic between the Momit Gateway and the Momit servers. The Momit Gateway communicates over the CoAP protocol.

CoAP servers typically implement the CoRE standard, allowing service and resource discovery. Performing this on the Momit Cool Gateway allows us to retrieve a list of available resources:

coap get coap://192.168.3.164:11686/.well-known/core

</.well-known/core>;ct=40,
<//>;title="Default root resource",
</0/1>;title="Security: PUT value";rt="Security",
</1/1>;title="Server: PUT value";rt="Server",
</3/0/12>;title="Init Bootstrapping";rt="Init Bootstrapping",
</3/0/0>;title="Manufacturer";rt="Manufacturer",
</3/0/1>;title="Model Number";rt="Model Number",
</3/0/2>;title="Serial Number";rt="Serial Number",
</3/0/3>;title="FW version";rt="FW version",
</3/0/4>;title="Reboot";rt="Reboot",
</3/0/5>;title="Factory Reset";rt="Factory Reset",
</3/0/16>;title="HW version";rt="HW version",
</4/0/4>;title="Ip";rt="IPv6",
</3/0/14>;title="Tx powerl";rt="TX power",
</3/0/15>;title="Channel: PUT value";rt="Channel",
</10241/0/0>;title="TEM-HUM-BAT";obs,
</10243/0/6>;title="factory_programming: PUT value";rt="factory_programming",
</10243/0/10>;title="Router ip";rt="IPv6 Router",
</10243/0/12>;title="ServerIp";rt="ServerIp",
</10243/0/13>;title="Neighbours";rt="Neighbours",
</10243/0/20>;title="HW version";rt="HW version",
</10243/0/21>;title="HW version";rt="HW version",
</5/0/0>;title="FW package can be updated using PUT method";rt="block";sz="MAX_PLUGFEST_BODY",
</5/0/2>;title="fw_update";rt="fw_update",
</5/0/3>;title="fw_state";rt="fw_state",
</5/0/5>;title="fw_update_result";rt="fw_update_result",
</3/0/10>


coap get coap://192.168.3.164:15395/.well-known/core
</.well-known/core>;ct=40,
<//>;title="Default root resource",
</0/1>;title="Security: PUT value";rt="Security",
</1/1>;title="Server: PUT value";rt="Server",
</3/0/12>;title="Init Bootstrapping";rt="Init Bootstrapping",
</3/0/0>;title="Manufacturer";rt="Manufacturer",
</3/0/1>;title="Model Number";rt="Model Number",
</3/0/2>;title="Serial Number";rt="Serial Number",
</3/0/3>;title="FW version";rt="FW version",
</3/0/4>;title="Reboot";rt="Reboot",
</3/0/5>;title="Factory Reset";rt="Factory Reset",
</3/0/9>;title="Battery status";rt="Battery",
</3/0/14>;title="Tx powerl";rt="TX power",
</3/0/15>;title="Channel: PUT value";rt="Channel",
</3/0/16>;title="HW version";rt="HW version",
</5/0/0>;title="FW package can be updated using PUT method";rt="block";sz="MAX_PLUGFEST_BODY",
</5/0/2>;title="fw_update";rt="fw_update",
</5/0/3>;title="fw_state";rt="fw_state",
</3/0/10>,
</5/0/5>;title="fw_update_result";rt="fw_update_result",
</10241/0/0>;title="TEM-HUM-BAT";obs,
</10242/0/0>;title="Events";obs,
</10243/0/1>;title="Cal Temp: PUT value";rt="Cal Temp",
</10243/0/2>;title="Cal Hum: PUT value";rt="Cal Hum",
</10243/0/6>;title="Hysteresis: PUT value";rt="Hysteresis",
</10243/0/10>;title="Router ip";rt="IPv6 Router",
</10243/0/11>;title="Error code";rt="HW",
</10243/0/12>;title="ServerIp";rt="ServerIp",
</10243/0/13>;title="Neighbours";rt="Neighbours",
</10243/0/16>;title="SetPoint event";obs,
</10244/0/0>;title="IR capture command,
</10244/0/1>;title="IR Status Command";obs,
</10244/0/2>;title="IR Send Command,
</10244/0/3>;title="IR Autocheck: PUT value";rt="IR Autocheck",
</10244/0/4>;title="IR TX Mode: PUT value";rt="IR TX Mode",
</10243/0/20>;title="HW version";rt="HW version",
</10243/0/21>;title="HW version";rt="HW version"

Turning on

PUT /10242/0/0
Content-Format: 1541
cm=cool,t=1335,sp=210

Turning off

PUT /10242/0/0
Content-Format: 1541
cm=cool,t=0,sp=off

References

• https://www.momit.com/en-us/products/cool
• https://tools.ietf.org/html/draft-bormann-core-simple-server-discovery-01
• https://github.com/smikims/arpspoof
• http://coap.technology/