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Brett's Arduino 8x Smart Charger / Discharger
#81
Build complete, now on to testing.
Not sure if I've gone a bit overboard on my cooling solution! We'll see once I get 8 cells discharging all at once.  Smile

    
BlueSwordM, Mazlem, Korishan like this post
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#82
STL file?
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#83
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(09-20-2018, 03:58 PM)watts-on Wrote: Build complete, now on to testing.
Not sure if I've gone a bit overboard on my cooling solution! We'll see once I get 8 cells discharging all at once.  Smile

    

Mate that looks awesome (show off - hahah). Yep cooling is a factor without a fan on my version 1.0 board it got hot and set off all the temperature sensors and said all batteries were faulty. I was going to ask if somebody wanted to create a 3D printer enclosure, but looks like you already have done one. Keep up the awesome work.

Cheers,
Brett
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#84
(09-20-2018, 11:01 PM)tremors Wrote: STL file?

For the heatsink/fan enclosure?
It needs some work before I'd be happy to release it. This was just my first attempt.
And I had some issues with shrinkage / warping and had to do some major bodging to get it to all fit together.
When I do version 2 I'll be happy to release it.  I can PM you this version though if you want it as is.
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#85
(08-07-2018, 06:07 PM)chiphead Wrote: Just ordered 5 sets.   need 3.   will have 2 boards and all the parts for 2 complete minus the power supply, bar code scanner and printer available.


Thanks for the great work Brett!!!!

Where are you located?

I am in SoCal and if you are not local, then I'll order a batch. Anyone else in the Western US interested?

A batch of 5 is just under $27.00 delivered to me. Shipping within the US will be more than the pro rata cost of the board! Batch of 10 is a little cheaper...
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#86
Hi Brett,

Just ordering the last parts for the charger, just wanted to check the 7v power - do you know the amp draw needed? is 1A enough ? and also the barrel pin, + in the inside or outside? I believe i have a version 2 board?
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#87
(10-11-2018, 08:50 AM)unclebob Wrote: Hi Brett,

Just ordering the last parts for the charger, just wanted to check the 7v power - do you know the amp draw needed? is 1A enough ? and also the barrel pin, + in the inside or outside? I believe i have a version 2 board?

Hi, I would recommend 7V 2A as the RoboyDYN Mega has Low Dropout Voltage Regulators so the lower you get the better. I you are using a computer PSU you could use a buck or boost (depending on whet voltage you connect to) then you can tune it in to the lowest voltage input it will work with. 

Cheers,
Brett
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#88
Not quite sure what to use yet! I have a 5v 10amp PSU that I was using for led lights, but not sure re the 7v. Or to go down the computer PSU route and buck converter.
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#89
(10-11-2018, 06:55 PM)unclebob Wrote: Not quite sure what to use yet! I have a 5v 10amp PSU that I was using for led lights, but not sure re the 7v. Or to go down the computer PSU route and buck converter.

Just use the 5V 10A for the TP4056 and get a 6.5 to 9v 5.5mm x 2.1mm with Positive center plug.
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#90
Cheers, will order it today, then wait 15-60 days for delivery with everything else!
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