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Forum Index : Microcontroller and PC projects : RTC GETTIME....
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| paceman Guru  Joined: 07/10/2011 Location: AustraliaPosts: 1329 |
I bought half a dozen when you posted that link Mick. Couldn't get the first one to work then found it had a dry joint to the battery. Fixed that and up it came but only for a few days and then the battery died. About half of them had stuffed batteries but the others were OK - still good though in that they're really cheap and tiny. Pity that the pin-out is a bit different but as you say it's easy to change. Greg |
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CaptainBoing Guru Joined: 07/09/2016 Location: United KingdomPosts: 2171 |
I bought mine without batteries and sourced them elsewhere - this way I only start the battery when required... blimey - just checked - it was a year ago here are the cells I got |
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| isochronic Guru Joined: 21/01/2012 Location: AustraliaPosts: 689 |
Are they working Grogster ? If the battery is spot-welded in, they are probably meant as throw-aways anyway. I guess the question becomes, how much confidence can you now have, that they will keep functioning or how accurate they will be. |
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| paceman Guru Joined: 07/10/2011 Location: AustraliaPosts: 1329 |
The tabs are spot-welded onto the battery and the tabs then soldered to the PCB. Similar arrangement of tabs to CaptainB's link except the +ve tab has a double right angle bend so that it extends down alongside the -ve tab to solder to the PCB pad. At a pinch CaptainB's could be soldered to the same position as these without a small link. The batteries on the ones I got from Mick's link had CR1025 buttons, not CR1220's but the CR1220's would probably fit; there might be a very small PCB overlap. Greg |
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Grogster Admin Group  Joined: 31/12/2012 Location: New ZealandPosts: 9750 |
@ chronic - Yes, the new ones seem to be working fine - time included. I have used these ones before, and had no problems, so this thread was a new one to me. Again, you can't expect too much with the clones - if anything reliable at all. As mentioned, I suppose I could extract the clone and put a genuine Dallas chip on the module if I wanted to be really sure. Smoke makes things work. When the smoke gets out, it stops! |
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Chrisk Senior Member  Joined: 21/12/2014 Location: AustraliaPosts: 137 |
Hi Grogster and All I have just had the same problem. Did a search on TBS and found your post. Can you give me the site from which you purchased the good ones. I don't want to purchase more of the same.  Chris K |
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| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9750 |
Page two, post two....  Smoke makes things work. When the smoke gets out, it stops! |
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| Chrisk Senior Member Joined: 21/12/2014 Location: AustraliaPosts: 137 |
Thanks Grogster. Couldn't see for looking. Did it really take 30-50 days? Seems a bit slack. I noticed it doesn't have the pin outs labelled. Found it on a Bigmik post. |
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| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9750 |
30-50 days - not sure. I've had a quick scan through this thread, but can't see where I reference that kind of delay. Some things do indeed take ages to arrive. eBay is notorious for that. I prefer AliExpress these days, as they seem to be much faster on the whole. Smoke makes things work. When the smoke gets out, it stops! |
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