Espruino JavaScript
JS 2 BLE connection Failing #7236
Replies: 2 comments 4 replies
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Posted at 2024-10-13 by @thyttan It looks like you already were to the troubleshooting page. Maybe you'll find an answer among these search results: https://forum.espruino.com/search/?q=bluetooth+ Hope it starts working again! Posted at 2024-10-13 by user159121 Also, the watch shows up in Bluetility and I can connect, but it seems to fail with the programmability as there are no attributes Posted at 2024-10-14 by @fanoush
You can try https://www.espruino.com/Bangle.js2#recovery-menu If you still see no attributes and can't connect properly then it can also be some issue on your computer. Posted at 2024-10-14 by @gfwilliams As @fanoush says really - give it a go in the recovery menu as even if OpenHaystack is causing issues (which is quite possible) it won't be running at that point. But also maybe just try rebooting your Mac, just in case. Sometimes the Bluetooth stack on the host computer does get into a mess and will refuse to connect. Posted at 2024-10-14 by user159121 I have rebooted the Mac, and tried both recovery and clean booting. On the Bangle, it shows On the client it says Posted at 2024-10-14 by user159121 I really want to get BLE working before setting up a SWD. Posted at 2024-10-15 by @fanoush
SWD setup is unrelated to getting BLE working so you can definitely go for it if you wish without having BLE working, however I wonder what you want to achieve with that. In the clean boot nothing runs so it is in the best state it could be so if that doesn't work it is either issue on client side (can you try other device?) or some hardware/firmware issue but that is unlikely if it worked before and the only thing you did was attempting to "reset the time". Well unless you did it by taking device apart and replacing 32kHz crystal. You can also try to restore device to factory state but that should make no difference to the clean boot state. EDIT: more info is needed - did it work before and for how long? what exactly you did before it stopped working? Posted at 2024-10-15 by @gfwilliams Yes, please just forget about the SWD - it won't be useful for what you want to do at all. It'd be a good idea to try connecting from some other device and see if that can keep a connection - a phone maybe? Posted at 2024-10-15 by user159121 It has worked for about 2.5 years now, and I will try with another device soon. Posted at 2024-10-19 by user159121 Still failing no matter what device I use. Posted at 2024-10-21 by @gfwilliams Are you able to connect to it when it's in DFU mode? The IDE/App Loader won't connect in that case, you'll have to use the If you were on an old (pre-2v22) firmware, there were some changes in 2v22 that made Bluetooth more reliable on some devices (if the crystal oscillator wasn't running as accurately as we'd assumed). I guess it's possible that you have a bluetooth hardware problem on your Bangle, although the fact that it seems to at least start connecting makes me feel like it's less likely. You could try pinching the Bangle in the top right corner and see if that improves the connection (there's a sprung connection to the aerial inside the watch there, and I've seen a few devices where it can lose contact with the aerial) Posted at 2024-10-24 by Unostot Well, not sure if its the same problem, but I have (again) the problem that my bangle2 will not work anymore. Any ideas what could be the reasons besides bad luck? Could there be any app/logging or such be the reason? Greetings, Uno Posted at 2024-10-24 by @fanoush can it be mechanical? do you frequently do some sports with the watch where you rapidly move your hands a lot (and your wife does not)? Posted at 2024-10-25 by @gfwilliams Does squeezing in the top right make it come back to life? That's usually the sign it's a hardware issue.
In the very first KickStarter batch there appeared to be an SMD soldering issue in some watches and it seemed the chip itself lifted slightly off the PCB, which is why we replaced those ones. But since then the rate of failures has been very low. The aerial is part of the case, and the connection to it is made with a gold-plated contact from the PCB to the case. If your watch was getting wet inside (do you shower with it?) the aerial contact could get corroded over time and then lose contact? If that's the case, repeated squeezing might make the contact move slightly, wear off the oxide and it might start working semi-permanently again. The other possibility is the battery expands slightly and pushes the PCB away, breaking the contact, but I haven't yet seen any watch with any sign of that happening. Posted at 2024-10-27 by user159121 Finally, it began working after restarting everything, flattening the battery and then recharging the watch. Posted at 2024-11-18 by Unostot Hello Gordon, For my watch:
When I find it again (not sure where I put it, and its not where I'd expect it to be ;) ), I will try if a complete drain has helped, but I have little hope right now... Posted at 2024-11-18 by @gfwilliams
No, that should be fine, but it's worth covering up anyway in case it increases corrosion on the two outside pins that you need to charge it. If pinching it makes it appear on Bluetooth then that would kind of clinch it - and might even bring it back to life. Posted at 2024-11-30 by Unostot
ok, I think we are on the right track...I found the watch, charged it..and it was still not working... I removed a bit more on the sides then, and the rest of the pin has still some gold...but as you can see in the picture, somehow the pin has a small hole, which...not sure... I've not testet how deep this thing goes, but I think this could be some way for humidity to get into the watch... My wifes bangle pin looks similar green, but apparently no hole until now...I hoe it stays this way :) edit: not sure why he puts the Attachments: Posted at 2024-12-02 by @gfwilliams Wow, that is surprising. I imagine there's a via in there that actually makes the connection to the far side of the PCB. I guess that could have gone all the way though, but it's got to be maybe 0.8mm of copper that would have to have corroded away.
Please can you try and clean hers and then cover up that particular pin with a sticker or maybe a small dot of nail varnish? Just something to stop the corrosion - it's why we ship them with the sticker on the back. Posted at 2024-12-02 by Unostot we put nail polish on it, right after the kickstarter back then...but seems like we should gently redo it...On my 2nd bangle I did try to protect it in the beginning, but since it would still go over time through the protection I gave up at some point...(never would have thought it ends up like this...I thought it gets a bit green but would not go a lot deeper ;) ) I'm not sure how well the casing/pins will response to attempts to clean up the old polish first with polish cleaner stuff...do you have experience regarding this plastic and such cleaners? It was a non-aceton-clear-polish I think, so the newer, 'healthier' stuff ;) Otherwise I don't think simply a new layer of nail polish on the old partial cleaned polish will help a lot, hm? Posted at 2024-12-03 by @gfwilliams
Thanks for checking - yes, the pins should be ok but the case will melt with Acetone which is normally in nail varnish remover. Maybe your stuff will be better - but you could try first on a small patch under where a strap attaches so if it messes up something you'll never see it :) Things like IPA (Isopropyl alcohol) will be totally fine, but won't soften the paint. I think as long as you've cleaned the area with detergent to get any oils off, applying paint on the old paint would be ok if it really has worn away. |
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My banglejs 2, from the kickstarter batch, also had the Bluetooth stop working from one day to the next. Tried everything, factory reset, battery drain, nothing helped. Found this thread today and lo and behold, there's a small hole under the corroded pin.
It's been a many happy years with the banglejs, time for a new one 😊. |
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Really sorry to hear that - I guess maybe that hole has corroded through and then maybe the inside of the watch has got corroded? You could always try pinching in the top right and see if it comes back temporarily. Some repeated pinching might clean the contacts enough, and then you could put a dab of super glue or something over the hole to make sure it stays bunged up. Along with the next batch of Bangles I'm ordering I'm also ordering 100 spare Bangle.js bodies. It'll be a few months before they get here but at that point you might be able to get a new body (which contains the aerial, HRM and charge contacts) and swap over all the innards if you wanted. Gluing the screen back on is a bit of a pain though! |
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Thanks for the reply and the advice. I'd seen your tip earlier to pinch the watch, this didn't help either. |
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Same issue with my Bangle2. The watch could be detected in Chrome/Gadgetbridge and even as DfuTarg in the DFU app. Connecting to it was impossible though with either method. |
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Great - glad that fixed it! You might be able to tweak that little gold sprung connector to make it push onto the BLE aerial a little harder? |
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Posted at 2024-10-12 by user159121
I recently attempted to reset the time on my bangle and it failed to connect to the app loader. I then tried to use the IDE, which also failed. I simply wish to find a BLE method that doesn't involve me using SWD debugging. HID is off, Privacy is off, Passkey is none, whitelist is off, Programmable and BLE are on. I am using Degoogled Chromium on a Macbook Air. One possible app causing issues is OpenHaystack.
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