griddown

This program talks to a Telsa Powerwall and determines if the power grid is working or the system is acting as a backup. When power loss is detected, it will execute a predefined SmartThings scene. When power is restored, it will execute another predefined SmartThings scene.

Dependencies

• Smartthings account and compatible hub
• Telsa Powerwall and login information. Note, this can only be done within the network of the installed system - not accessbile on the internet
• This command is intended to run from cron as it is currently written

Powerwall Requirements

• Tesla Powerwall and gateway
• Know the IP address of the gateway (intenal webserver)
• Create a local login with password on the local gateway's web interface
• The provided powerwall.cer assumes you have a DNS (or host file) with the name powerwall pointing to the IP address assigned to your powerwall system in your house

SmartThings Requirements

• Samsung SmartThings account
• SmartThings compatible hub
• Personal Access Token -> https://account.smartthings.com/tokens
• A pre-created scene to take actions when power is lost -- Example: GridDown -> Turn off water heater
• A pre-created scene to take action when power is restored -- Example: GridUp -> Turn on water heater

Example setup

cd $HOME/tmp

griddown -cmd setconf -sttoken "2343242323bb23b3-23bb3" -stdownscene GridDown -stupscene GridUp -pwuserid "[email protected]" -pwpasswd "abc123

griddown -cmd gridstatus -rundir $HOME/tmp