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August 4, 2010
Yes. It should take about 15.6 hours to charge completely though.
For those of you that don’t want to read the datasheet, max charge and discharge is 1C, normal charge is 0.2C. The wire is 22AWG so it can carry up to 7amps. However, I believe the JST-PH connector is only rated at 2A, but I could be wrong.
This would have been a little more useful as a reply to j.tilghman question rather than it’s own comment. For those that see this is several years and don’t know what question he/she is answering it was: “Could you charge 2 of these packs in parallel”
about 3 months ago
Nevermind, I watched the video and answered my own question. No major changes but some nice minor ones.
Are there any major changes between this version and the previous version? (besides the prices, thanks btw)
about 4 months ago
1) Thanks for carrying these, it’s so annoying to have to put a seperate order in to digikey for only a few things like this.
2) I wish you’d carry more smd parts like these, especially in the 0805 size, which is the smallest my old eyes can work with.
3) I think these should be pretty bright at 120mcd. For maximum current, use a 150 ohm resistor for 5V or a 60 ohm resistor for 3.3V. Though personally, I’d just use a 330ohm.
about 11 months ago
The easiest thing to do would be to use a knife to cut the small trace between the center pad and the 500mA pad. Then get a regular through hole resister and solder it into the “prog” space between the two JST connectors. Page 7 of the datasheet has a chart showing which resister to use to achieve a given output current. For 60 mA, you should use a 16k resister.
From the board, it looks like the battery in and system out are connected and just have different labels on them but could be used for either. Would somebody confirm that I’m not reading that wrong?
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about a year ago
I would also really love to know the answer to this. I’m considering writing a lab manual for a class I teach and I have no idea what software to use. Should I go with simple Microsoft Word or the really advanced inDesign. Or should I do without wysiwyg and use Tex and just deal with having less control on images? Would love to know what you used Derek.
about 2 years ago
I love this little display! I wanted to be able to create images for it but nothing I saw did exactly what I wanted. So I wrote a processing sketch that creates 84x48 squares on the screen and allows you to click to turn them on or off. Also has buttons to invert, move up/down/left/right, and flip horizontally/vertically. Then, it saves the hex data to a text file to copy to your code. You can also load an image (any size, any colors) and it will scale it, convert to b/w, then put it in the rest of the program so that you can alter the pixels or move it. It isn’t perfect for every occasion but I’ve found it useful and I hope others might too. It is heavily commented so it should be easy to figure things out and change them if you want something different. http://thewanderingengineer.com/2014/07/12/nokia-5110-screen-photo-to-bitmap-converter/
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