Jay, I know it is cumbersome but we are still running our wave solder machine, making our own through hole product. We could do small runs easily, that’s what we do anyway. You'd have to come back to through hole though. Mark
-----Original Message----- From: EV [mailto:[email protected]] On Behalf Of Jay Summet via EV Sent: Tuesday, April 28, 2020 7:31 AM To: [email protected] Cc: Jay Summet Subject: Re: [EVDL] Minibms? Even the v3 boards are not terribly complicated from a circuit standpoint. And I feel confident that the firmware they run could be replicated. I could easily see creating an open source PCB and firmware again. The difficulty is with manufacture/distribution in my mind. There are a few assembly houses that will do short runs, but it's very hard to do that economically. So somebody could build/sell replacement units, but I fear that the market is relatively small. (mostly limited to replacements for existing installations) Other BMS's with cell level monitoring/reporting offer a better option and their price points are coming down. I've been strongly considering a BMS upgrade for my truck as the next major upgrade (due to the fact that the miniBMS modules are not easily available for replacement, and do a poor job of keeping the pack balanced.) Jay On 4/27/20 7:26 PM, Mr. Sharkey via EV wrote: > The MiniBMS system was originally started as an open source project by > users of the DIY Electric Car forum. It was mostly spearheaded by > Dimitri, with input from several interested users. The first version > as intended to be able to used with all the cell modules on one PCB, > with voltage sense wiring going to each cell. It could also be cut > into individual PCBs and cell-mounted. There are vestigial PCB traces > for the opto interconnection even on the v.2 cell modules from this > design (I cut those traces off individual boards, as they add to the > creepage problem). A 4x4/16 cell PCB was standard, but other > configurations were possible. > > After the basic system was designed by the group, and Dimitri had a > few runs of v.1 and then v.2 boards printed and stuffed, he decided > that the project was no longer open source, and took it private, much > to the dissatisfaction of the other participants. It wasn't a lot > after that the he sold the intellectual property rights and name to > EVPower, who further refined the design and packaging. > > I agree that we have a chance to reintroduce a good portion of these > available cell modules to the EV community for those who are > interested. How shall we procede? > > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > ARCHIVE: http://www.evdl.org/archive/index.html > INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Please discuss EV drag racing at NEDRA > (http://groups.yahoo.com/group/NEDRA) > _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
