Espruino JavaScript
Piezo upgrade #1985
Replies: 21 comments
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Posted at 2020-04-08 by Robin Wed 2020.04.08 Were you aware that images are not rendering? See 'Formatting Help' link adjacent to 'Cancel' button at the bottom of each edit window. |
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Posted at 2020-04-08 by Fram Hi Robin |
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Posted at 2020-04-08 by Robin
Is it possible that it is necessary to log in at that destination, e.g. works for you as you are logged into that account?
What exactly is meant by 'doesn't seem'? Uploading will keep appending to end of the post, just can't insert. Click 'Edit' button on post #1 or post #3, click the uplaod a file link. Can only add one at a time up to a max total of five. Just did a .jpg |
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Posted at 2020-04-09 by @gfwilliams That's great! Thanks for showing your progress! I just modified the post to include links rather than direct images (as that's what the URL was for) so at least others can see now :) |
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Posted at 2020-04-09 by Fram Hi Gordon and thank you for the modifications. |
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Posted at 2020-04-09 by Raik Coming from a smoke detector your watch must be ear-ringingly loud now! ^^ Honestly, whats the audible result? Is it clearly better than the vibration buzzer? |
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Posted at 2020-04-09 by Fram Hi Raik |
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Posted at 2020-04-09 by @MaBecker Nice, what specs has that piezo? |
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Posted at 2020-04-09 by @allObjects ...did I read Pizza upgrade? ...topping specs? ...sorry for the not so foreign joke in this foreign time we all go thru right now. It needs some humor to brighten things up. On a more - or in other ways - serious note: the piezo is so quiet / low volume because it if 'free' between 'soft' things. if there would be a way to make it work like a piezo microphone (or probably your smoke detector), the element would have to be on 'solid ground' and the center would have to have a 'Stimmstock / tuning stick' like in the Violin that passes the vibration from the 'Steg / bridge' on the top onto the bottom - the membrane / speaker cone. The other thing that could work is a transducer 'bolted solidly' to the case, top glass is better than bottom metal. The mic I had as a tinkering boy: looked like a small round pill box with a 7 hole in the top giving view onto a metal membrane wit a funny metal thing poking thru its center, fixated with a tiny bit of glue. Behind the membrane was a flat 1x1cm thin crystal waver of which three corners were solidly mounted in the box and the fourth corner had the other end of the funny metal thing fixated to the membrane. Incoming sound waves flex the crystal which creates electrons being pushed around its grid... and this is detected by wires connected to the sides which were silver coated... Could not find a pic of such a mic nor find it... but I found - ironically this: https://www.instructables.com/id/Make-a-Guitar-Pickup-From-an-Old-Watch/ No need to explain 'ironic'... and it also makes me think if this could be used to make Bangle.js a recording device! ...hahaha... |
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Posted at 2020-04-10 by Fram Hi everyone ! |
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Posted at 2020-04-10 by @MaBecker I got some EPZ-15MS60W from Reichelt and some for China, will try them in the next days. |
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Posted at 2020-04-11 by Fram Hi everyone |
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Posted at 2020-04-13 by Stoaty I just ripped some of these out of some old Tile keyrings! Unsuccessfully soldered one so far 🙈it seems there's a coating on top that doesn't like being soldered onto (I used liquid flux, but the connection was still mechanically weak and easily breaks off of the thin coating). EDIT: I managed to solder to the + terminal of the Piezo after watching a video that shows you can in fact scratch the coating with a razor blade - it's still a very brittle connection, but I managed to solder to the correct pins to test it out and got beeps! It was definitely louder, but there's no way i can solder the connections into the watch without something breaking (i already tried twice!) It was a fail, but I learned some stuff too, so it's ok! |
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Posted at 2020-04-13 by Fram Hi everyone |
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Posted at 2020-04-16 by skm I got a bunch of 20mm piezo discs off Amazon, removed the casing from one with a pair of pliers, and soldered it into the watch as per the video - works fine. |
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Posted at 2020-04-17 by Fram Hi everyone |
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Posted at 2020-07-14 by DrBard This is Just the kind of thing I wanted to do! Thanks @Fram ! |
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Posted at 2020-07-14 by @gfwilliams I need to do a video on this, but I actually just got around to trying some different things with Piezos and the results are a bit disappointing. However it seems that if you don't care about the heart rate sensor, you could poke out the little circle in the middle and glue the piezo over that, and it might actually be ok. Soldering shouldn't be too bad as the pads are quite far away from other components, but you'll still need a proper soldering iron (not a gas powered one, or a massive one you use for stained glass :) |
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Posted at 2020-07-14 by Fram Hi everyone ! |
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Posted at 2020-07-15 by DrBard Well, I will see what I can do @Fram, Not that good with doing videos but we will see. |
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Posted at 2020-07-16 by @gfwilliams I don't have anything right now that I'd feel confident recommending. None of the stuff I tried was great, but I did find some cool tiny ones like https://uk.farnell.com/multicomp/mcabt-456-rc/audio-element-piezo-9-5khz-12mm/dp/2433032 if you wanted to try sticking them to the rear of the watch |
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Posted at 2020-04-08 by Fram
Hi everyone.
I didn't wait more that 48 hours after receiving my Bangle.js to upgrade it with a piezo buzzer.
This come from a smoke detector that I found landing on the ground in the street near my work a certain time ago. I dismantled it to keep for future projects some components (even some SMD capacitors...) and a piezo buzzer.
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Just soldered two thin wires on it, tested it with an Arduino UNO.
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And, finally, put in my Bangle.js.
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Biggest thanks to Gordon that showed how to disassemble/re-assemble the Bangle.js and the way to add a piezo buzzer.
Francis
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