Hi all -
I'm starting to design a project to read the status of multiple LEDs on a panel.
See the attached photo.
That's the LED panel from a Honeywell Zone Controller for my HVAC system.
(for the curious, it's a Bosch two-zone heatpump/backup propane system, Bosch WiFi thermostats, which do not provide the level of detail I'm after)
I'm trying to decide between two methods for knowing when various LEDs are on or off.
1 - Use several photosensors and light-pipes and detect each LED individually.
2- Use some form of image pattern recognition, and make up template files for each possible set of LEDs in the on/off state to recognise.
3- Some other method I'm not thinking of that some of you might try?
The obtained data from the Raspi located down in the crawl space could be sent upstairs to a larger platform for processing.
Ultimately, will be fed into HomeAssist for control/tracking, but the "data" may need some processing before we get to some format HA could use. I have experience with a lot of data graphing tools like MRTG, Cacti, etc - less so with Grafana, etc,
First step is accurately collecting LED status data.
That's the question here.
TIA for ideas on how best to do this.
Notes:
- My primary goal is to determine how long Heat 3 (the propane) or EM heat is used. This to attempt to predict propane usage so as to budget accordingly for fuel. Bonus would be knowing the other Heat/Cool timeframes of operation which might be useful data for electric billing.
- The Honeywell HZ432 does _not_ have any serial port/USB etc - it's pretty dumb.
- The thermostats do not have knowledge of the details of the level of heat/cool being asked for. I need to get the detailed data.
- The furnace itself has some seven-segment LED panels inside visible through a blurry window. Not sure I could ever read those accurately enough to be useful.
I'm starting to design a project to read the status of multiple LEDs on a panel.
See the attached photo.
That's the LED panel from a Honeywell Zone Controller for my HVAC system.
(for the curious, it's a Bosch two-zone heatpump/backup propane system, Bosch WiFi thermostats, which do not provide the level of detail I'm after)
I'm trying to decide between two methods for knowing when various LEDs are on or off.
1 - Use several photosensors and light-pipes and detect each LED individually.
2- Use some form of image pattern recognition, and make up template files for each possible set of LEDs in the on/off state to recognise.
3- Some other method I'm not thinking of that some of you might try?
The obtained data from the Raspi located down in the crawl space could be sent upstairs to a larger platform for processing.
Ultimately, will be fed into HomeAssist for control/tracking, but the "data" may need some processing before we get to some format HA could use. I have experience with a lot of data graphing tools like MRTG, Cacti, etc - less so with Grafana, etc,
First step is accurately collecting LED status data.
That's the question here.
TIA for ideas on how best to do this.
Notes:
- My primary goal is to determine how long Heat 3 (the propane) or EM heat is used. This to attempt to predict propane usage so as to budget accordingly for fuel. Bonus would be knowing the other Heat/Cool timeframes of operation which might be useful data for electric billing.
- The Honeywell HZ432 does _not_ have any serial port/USB etc - it's pretty dumb.
- The thermostats do not have knowledge of the details of the level of heat/cool being asked for. I need to get the detailed data.
- The furnace itself has some seven-segment LED panels inside visible through a blurry window. Not sure I could ever read those accurately enough to be useful.
Statistics: Posted by IOTHamRadioSensors — Thu Mar 13, 2025 2:20 pm — Replies 0 — Views 30