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Re: LTC6802 based 12 cell slave.

Posted: Mon Apr 01, 2013 11:01 pm
by ElectricBicycleLove
GregsGarage wrote:I couldn't decide on a case for the pcb so I chose 3. :shock: Here's a board outline that will fit several cases.

I'm going to get some prices and check lead times.

If you use a 3D printer you can get a case in 30 minutes and cheap :-)

I am not good at design... here are enclosures designed by me and printed on my printers of the time:
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Re: LTC6802 based 12 cell slave.

Posted: Wed Apr 10, 2013 9:04 pm
by GregsGarage
3D printing looks fun and great for one-offs, but I am looking for quick assembly. So here's the plan.
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The board sits inside the case. I am getting some prices to have new end panels laser cut from a sheet of clear perspex. One A4 size sheet gives me enough end panels for 20 cases. For extra protection from the elements a little bit of sealer around the joints and where the connectors poke through should make them nearly waterproof. :D

Re: LTC6802 based 12 cell slave.

Posted: Sat Jun 29, 2013 11:27 am
by GregsGarage
It's been a while, got sidetracked by life in general :shock: but the boards arrived from China about a month ago. I've just ordered some bits to make up 10 slaves and see if they work. I am also going to see about getting some 1.6mm clear perspex laser cut for the end panels.

Here's one board with just the connectors soldered on so I can measure for the end panels. I don't suppose anyone has access to a laser cutter?
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Re: LTC6802 based 12 cell slave.

Posted: Mon Jul 15, 2013 10:39 pm
by GregsGarage
I've got 2 boards made up, bench tested and in their enclosures. I am going to fit them to my back battery box but will first have to redo the cell conection wiring. I made adapters that allowed me to connect the previous version in parallel with the old bms, but I didn't do a very good job on some of the connectors. So out with the old and in with some new wiring, when I get the time that is! :shock:

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Re: LTC6802 based 12 cell slave.

Posted: Tue Jul 16, 2013 4:17 pm
by retepsnikrep
Nice progress that looks pretty cool.

Re: LTC6802 based 12 cell slave.

Posted: Fri Oct 25, 2013 11:45 pm
by GregsGarage
I wanted to try out upverter for pcb designs so I've done a layout for the master to slave interface which has been in my todo box for a while now. :roll:

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http://upverter.com/gregfordyce/080adabe36ab70b6/EVBMStoTTLinterface/#/