[PROJECT] Grizzl-E Charger Driver

⚙️ Custom Apps and Drivers Custom Drivers
1

This project is for my driver(s) to monitor a Grizzl-E EV car charger. At this time the driver is designed for monitoring the status of the charger from it's webserver and putting that information into a virtual device so that it can be used as desired within Hubitat.

Feature(s):

  • Polls data from the Grizzl-E charger
  • Populates current and power attributes that are standard for Hubitat
  • Populates a number of custom attributes for the other data the charger can provide
  • Checks my website daily for an updated version of the driver (if any)
  • Available within the Hubitat Package Manager (HPM).

Driver(s):

Setup:

  1. Using driver link(s) above download or import the driver as a user driver (then save) or install using HPM
  2. Add a Virtual Device device
  3. Select the Grizzl-ECharger driver for the Device Type (most towards the bottom of the dropdown due to being a user driver)
  4. Enter the Grizzl-E charger's IP the Preferences section (plus set any other settings desired) and Save Preferences
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2

Well now I feel bad not buying the Smart one.
If the Smart plugged itself in to the car I guess I would have gone for it. :wink:

3

I don’t currently have a Grizzl-E charger but have been considering getting one. Is this driver or the mobile app able to change the amperage supplied to the vehicle at any point (while charging or not)? I try to limit my charge to the supplemental solar power available. I can do this manually on the ChargePoint I currently have - automation would be much preferred, but at the very least, one of my use cases is for this to be manually adjustable in the app. :blush:

4

I have only had my charger installed since Friday, so not sure of all the capabilities.
But for your specifics:

  1. My driver certainly cannot (at this time), as I am just parsing one of their status pages. In other drivers where I HAVE added control capabilities, I usually wait a while to let the data portion settle out first and get experience with the system. This is NOT a documented thing I am working from, so I want to be very careful.
  2. There DO appear to be options for setting the maximum. These appear pretty new because most references online say it does not HAVE an Auto capability and that the setting is fixed by the internal DIP switches.
    a) The app has a spot to set the MAX CURRENT for the charger. Mine is defaulted to the max my setup allows for (48A). It has options for Auto, then 7-48 in 1A increments. The online manual does not actually say what "Auto" allows for. When you are creating a schedule it also appears to let you set a max current for that schedule, so it could be set to be at a higher value when your solar is available than otherwise I would guess.
    b) The webpage served by the charger also has a spot where you can set the max current. Further, there is a setting in their Timer option to set a limit of how many kWh it will charge. I could not find a comparable feature to that within the app.
1 Like
5

Thanks! Direct access via the device’s web server is truly a plus! Unfortunately, ChargePoint only allows for web access…

What vehicle did you get to go with your charger?

6

I recently got a Chevy Equinox EV. Went from a 2008 Ford F-150... So a pretty big change.

I will say, the webserver they are running on the charger (admittedly, it is an ESP... something... microcontroller) is pretty basic and looks old-school. Even an ESP can have a reasonably modern interface (if lacking in graphics, although it could get them from elsewhere) if the effort is spent on it.

1 Like