There’s a sub thread on the motorcycles group that had something you might be interested in.
Quote
Mark Olson wrote:
I've recently been getting back to my little project of figuring out how to add a tire pressure display to my car, either by interfacing to the OBD2 port, or listening to the TPMS sensors directly using rtl_433 and
displaying the results on a 1.3" LCD HAT attached to a Raspberry Pi Zero W. I've gotten the latter to work fairly reliably, but going through the OBD2 port would involve quite a lot of traffic sniffing on the CAN bus which
seems way too much like going back to my real job.
https://photos.app.goo.gl/ka1aKoY2Qurk37DeA
Simon Wilson responded:
Take a look at one of these: <https://www.aliexpress.com/item/1005003062523617.html>
They can run rtl_433 and do the display all on one tiny board.
To get back on topic, I ended up spending similar money for a little solar powered display unit and 6 screw-on pressure sensors for the motorhome.
<https://photos.app.goo.gl/pLiQLGmt6dAunXRW6>
Unquote
Spike <aero.spike@mail.com> wrote:
There’s a sub thread on the motorcycles group that had something you might >> be interested in.
Quote
Mark Olson wrote:
I've recently been getting back to my little project of figuring out how to >> add a tire pressure display to my car, either by interfacing to the OBD2
port, or listening to the TPMS sensors directly using rtl_433 and
displaying the results on a 1.3" LCD HAT attached to a Raspberry Pi Zero W. >> I've gotten the latter to work fairly reliably, but going through the OBD2 >> port would involve quite a lot of traffic sniffing on the CAN bus which
seems way too much like going back to my real job.
https://photos.app.goo.gl/ka1aKoY2Qurk37DeA
Simon Wilson responded:
Take a look at one of these:
<https://www.aliexpress.com/item/1005003062523617.html>
They can run rtl_433 and do the display all on one tiny board.
To get back on topic, I ended up spending similar money for a little solar >> powered display unit and 6 screw-on pressure sensors for the motorhome.
<https://photos.app.goo.gl/pLiQLGmt6dAunXRW6>
Unquote
Thank you but I’m dubious about ‘screw on’ sensors due to the pressure in
the tyres, especially on the rear.
The recommended pressure on the rear for our MH is 80psi - that is quite common. Even finding a forecourt pump which will reach 80 psi is a
challenge - most are limited to 60 or so.
I have a compressor and check the tyres before each trip. I also have a 12v one which will, in time, get there. ( plus a spare wheel.)
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