Update README.md #30
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@ -99,7 +99,50 @@ WantedBy=default.target
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- To let user services continue running after logging out:
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- To let user services continue running after logging out:
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- `sudo loginctl enable-linger $USER`
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- `sudo loginctl enable-linger $USER`
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Readme will be updated in the near future with physical connection instructions.
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***
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# Disclaimer:
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**I am not responsible of possible damage to your device if you choose to follow these instructions**
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**The manufacturer may void your warranty if you choose to follow these instructions**
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***
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### Connecting to the Pingvin unit
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#### RPi/computer running the daemon
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- Connect an RS-485 adapter to the computer you intend to run the daemon on
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- Tested only on a RPi 4B and Zero W 1 with the Zihatec RS-485 HAT
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- You may need terminating resistors in your adapter, see documentation of your adapter.
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- Ensure the user you intend to run the daemon as has read/write privileges to the serial device.
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- No need to run the daemon as root, and it is not recommended
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#### Pingvin
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- Shut down the main power of the unit
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- Disconnect the device from mains, discharge any static electricity before proceeding
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- A new motherboard seems to cost close to 1000€ + labour
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- Open the cover in which the power switch is attached to. No need to disconnect the switch, there
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should be enough length in the wires to move the lid with the switch connected out of the way
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![IMG_20230114_133625](https://user-images.githubusercontent.com/50285623/229897490-33d917be-9dea-4b74-bfed-c7b25f9f45f6.jpg)
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- Locate the green RS-485 connector on the motherboard, should be on the right edge
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- Schematics available from Enervent at [https://doc.enervent.com/op/op.ViewOnline.php?documentid=940&version=1](https://doc.enervent.com/op/op.ViewOnline.php?documentid=940&version=1), page 38 (finnish)
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![IMG_20230114_133824](https://user-images.githubusercontent.com/50285623/229898136-ce7dc020-6c33-4605-86ff-5285000cbbd2.jpg)
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- There should be available outlet holes to pass the wires through on the top of the electronics compartment.
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- The connector has a detachable plug part. Grab the top of the connector (the part with the screws) with plyers and carefully pull it out. This will make attaching the wire much easier
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- Attach wires by tightening the screws in the connector
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- Connect **A connector to A connector and B to B**. (they are not Tx/Rx like in many other serials)
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- **NOTE:** After reading quite a few forum posts, many RS-485 adapters seem to have printed the A and B the wrong way, I wouldn't be surprised if this was the case with Pingvin too.
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![IMG_20230114_133936](https://user-images.githubusercontent.com/50285623/229900176-5bac0027-80c6-4702-ab74-0ff2b9739507.jpg)
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- Plug the plug back to the Pingvin motherboard and close the cover and screws
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![IMG_20230114_135258](https://user-images.githubusercontent.com/50285623/229899975-45126a64-7344-4ca0-bfba-c4e524ebe2f8.jpg)
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- Reconnect mains and switch both devices on
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- Mixing A and B should be safe and won't break anything, but the daemon won't work. If that's the case, disconnect power again and switch the wires on the RPi end.
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### Home Assistant
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- There are so many variations for HASS configs, that definite instructions are hard to do.
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- All the YAMLs are intended to be copy-pasted to `configuration.yaml` (or files included to configuration.yaml)
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- Change the IP address, port, username and password according to your configuration
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- Restart Home Assistant (A full reload doesn't seem to be enough for all REST integration features to update)
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Work is part of my Bachelor's Thesis at Oulu University
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Work is part of my Bachelor's Thesis at Oulu University
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of Applied Sciences.
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of Applied Sciences.
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