TyreWiz sensors in Garmin 1040

As far as I can see the Tyrewiz app is not an official SRAM/Quarq app, but produced by a third party with no connection.

I can't see Garmin supporting Tyrewiz native: There is more than one system and they don't appear standard. Garmin has an automotive/motorbike TPMS of their own, which if they saw a market would be transferred to cycles.

The developer of Tyrewiz has never seemed particularly engaged with the app, and it's taken some time to transfer between unit series before. Remember, many of the folks doing this are hobbyists with day jobs.TBH looking at some of the reviews left concerning the issue, I could well see him saying to hell with it and not bothering to update it.

I think possibly the way forward is for some coder to approach Quarq, get the specs and write a new app. 

For now I've flipped to SKS airspy which I have on another bike: The hardware isn't as nice as Tyrewiz but the app for it has just been made available.

Tim

Since you have experience with both, would you mind sharing how you think the Airspy compares to the Tyrewiz? I went the tyrewiz route at the time because it "just worked" with my existing devices and apps. Now that it isn't working, I'm debating a switch. Thank you for any insights you may have.

I don't know if the TyreWiz application is not official from Quarq, but in the official TyreWiz manual it is indicated how to install it on Garmin. And there are references to Garmin Connect IQ. Not to be official, that it comes in the manufacturer's manual, it's very strange...And if the Ant+ protocol is proprietary to Quarq (and Garmin not support it like shimano di2, or others devices), and the Tyrewiz application is from an independent developer, how did he gain access to Quarq's internal specs to release the plugin? 

www.sram.com/.../tyrewiz-user-manual-rev-e.pdf

The question now is whether someone with knowledge of the Garmin SDK, and the app available for the 1030+, can download and port it to the 1040, since the base system is the same.

You assume that Quarq won't just supply it if you ask. Many manufacturers will to increase support without budgetary cost. Lots of stuff on variant platforms has unofficial support this way. Quark/SRAM have nothing to lose by doing so and everything to gain.

The app is listed as being developed by 'AlanF' who has one other app: An interaction with Home Assistant.

It's perfectly possible that Quarq are listing it without it being an official app. If it was official, I'd expect it to be under their name.

I believe they have actually said it's not an official app.

Either way, my point remains. 

Tim

I wrote to Quarq 3 weeks ago, and this is the official response:

Hey Tony,

Thanks for your question. We are currently in the process of bringing functionality to Garmin's 1040. I do not have an exact timeline be it is being looked into by our software engineers now.

Thank your patience.
SRAM Rider Support

(response of not saying anything, let time pass..)

Today I have written to them again, and the answer is that they are on vacation...

I find Airspy a bit more fiddly in terms of setting up. The app is OK but a bit bloat but does work. It's the hardware I'm not so keen on. The attachment method is better than tyrewiz, but more bulky. There is no LED to indicate it's alive or pressure status, and it doesn't store limits or name on the device like Tyrewiz. It doesn't seem as robust.Had to reset the battery contacts on one unit, and one came with a flat battery when I purchased a couple of years ago.

The app is capable of making a noise when you go below a threshold which seems nice but I'll see what it's like in practice.

You have to make sure your settings match between the app in IQ and on the phone.(but the IQ app doesn't rely on the phone to be clear).

But it is much cheaper (at least, in the UK, it can be had for around 90 notes if you're prepared to wait from the likes of Bike_Inn). When I had it I didn't buy more because it didn't support more than one bike: It does now.

Tim

I had seen a response on here where someone had been told it wasn't official.

Tim

It was your statement here.

https://forums.garmin.com/sports-fitness/cycling/f/edge-1040-series/299102/sideload-garmin-iq-plugins-from-1030

Which seems at odds with what you say above 

Tim

It’s brave to assume it just needs a recompile.

I would assume you can’t ‘reconfigure’ an app without source code: at which point it really does matter who’s responsible for the app.

still can’t help feeling actually requesting the details of the protocol and seeing if a friendly developer might write something would be most productive. After all there are a number of devs on the store with very professional apps.

Tim