Search found 108 matches

by hohisilver
Mon Feb 28, 2011 10:29 pm
Forum: BMS thread
Topic: General questions about the BMS project here please.
Replies: 39
Views: 66266

Re: General questions about the BMS project here please.

Ok, getting closer to starting my BMS build, so here are a few questions: 1. What's the tiny board - is it the remote transmitter, and if so is there a schematic/parts list for it? (I found AM-RT4-433FR on Farnell, is this the transmitter module used?) 2. I'd like to build and play with the master f...
by hohisilver
Thu Feb 24, 2011 3:07 pm
Forum: All things battery related
Topic: Ping Batteries in cold weather
Replies: 49
Views: 48774

Re: Ping Batteries in cold weather

Ah, you're andyw from ElectricMotoring aren't you (and you're "local" to me :) )? Like you it's now more a case of when I upgrade to lithium than "if" :) Personally I'm looking to go with Headway cells and have a play with Peter Perkins' BMS - not sure if anyone's used it on a sc...
by hohisilver
Thu Feb 24, 2011 8:24 am
Forum: BMS thread
Topic: Old BMS Software Thread
Replies: 600
Views: 359322

Re: Old BMS Software Thread

Ah, so "bridges haven't been burnt" as it were - the boards can still use picaxe? ;) My other thought was maybe to disassemble the PBPro code and do my changes in assembler! :lol: Yeah, I appreciate that this is not a commercial project (and the amount of work you guys have put into it) - ...
by hohisilver
Wed Feb 23, 2011 9:41 pm
Forum: BMS thread
Topic: Old BMS Software Thread
Replies: 600
Views: 359322

Re: Old BMS Software Thread

Peter: I've read through most of the threads now and I think I know roughly where things stand with the project at the moment. One thing worries me slightly, you mentioned you've gone over to Pic Basic Pro for programming? I was hoping I might be able to customise the master software a bit, but I se...
by hohisilver
Mon Feb 14, 2011 4:59 pm
Forum: All things battery related
Topic: Experiment with li- poly batteries in a greenpower racecar
Replies: 16
Views: 18412

Re: Experiment with li- poly batteries in a greenpower racec

These are the ones I was looking at: http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=370133293205&ssPageName=STRK:MEWAX:IT" onclick="window.open(this.href);return false; Says 50W which is why I thought they might be the same ones. How many cells do you charge with this method - I'd be l...
by hohisilver
Thu Feb 10, 2011 7:18 pm
Forum: All things battery related
Topic: Experiment with li- poly batteries in a greenpower racecar
Replies: 16
Views: 18412

Re: Experiment with li- poly batteries in a greenpower racec

Jeremy: My charger is cheap and simple, but is for the lower voltage requirements of LiFePO4. I use some cheap (search eBay) DC DC converters. They have isolated inputs and outputs, so can be connected to a common power supply and still hook up via a multipole connector to the battery pack. I'm intr...
by hohisilver
Thu Feb 10, 2011 10:18 am
Forum: All things battery related
Topic: Thinking of going LiFePO4
Replies: 3
Views: 6425

Re: Thinking of going LiFePO4

As a software engineer by trade and a sometime electronics hobbyist, you may be able to see why I'm interested :) I've done quite a bit of embedded software work over the years, sadly restricted to Windows programming these days. I did design and build a MIDI controller for my own use, using an Atme...
by hohisilver
Wed Feb 09, 2011 9:41 pm
Forum: All things battery related
Topic: Thinking of going LiFePO4
Replies: 3
Views: 6425

Thinking of going LiFePO4

I have one of the cheap Chinese electric scooters which started appearing in this country a few years ago, but having now run it for nearly 2 years the original SLAs seem to be starting to "sag" a little. The cost of LiFePO4 seems to have been coming down and I'm beginning to think it will...

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