Off topic post for people with 3D printers. I was making myself NEMA17 motor PCB breakout board to have convenient and fast way to swap out components on extruder head. I have made some kits for sale. Kit will include 2 x PCB breakouts, 1 x 70cm IDC cable(26AWG strands), 4 spacers. You will need to replace NEMA17 motor screws with 7mm longer ones. Price for one kit is 31EUR + shipping.
are ther any downsides to getting he shallow fixing type? perhaps itās hard to use for a novice build (like myselff)?
If you have space, standard should be better. Shallow do not accept caps as well.
I am going away for weeks holiday. Coincidence that busbars arriving tomorrow. I will start shipping on 17th of August.
USA, New Zealand, Australia will be Fedex only as i have too many shipments lost and shipping starts at 25ā¬. Probably best to look for combined shipping and then sort it out at the other end.
Are the V2 complete modules available for purchase yet? Interested in seeing their final dimensions & if they fit Molicel P42As or not.
@Agniusm Please man, I want to riiiide
Gonna vouch for these again because I did on the old forum. Both my e-bike and my esk8 use NESE modules and I really couldnāt be happier. I couldnāt stand disassembling Vruzends with a nut on each cell and the caps cutting my hands into shreds, and the Arduino spot welder I bought was defective and I was fed up with it.
Bought NESE busbars and printed my modules and I finally had working batteries. No more vibration issues like Vruzend, no need to spend hours cutting apart nickel strips because of a single dead cell like a spot welded battery. Definitely worth the price of the bars. Iām surprised these donāt get more love.
I accidentally inserted a bad cell in the middle of one of my NESE packs a few months ago and by the time I found it scolding hot, I had that cell out of the pack and somewhere safe in under 5 minutes. Donāt think that would have been possible with any other system.
@Agniusm Iām having problems with some of my NESE modules. Some cells in the parallel groups clearly have a bad contact. I probably have bad prints. I had these printed by a friend. I only have the tabs and hardware from you.
I now have my own Prusa i3 mk3s printer and Iād like to get the modules re-printed. Iāll try the V2. Iām just not entirely sure about the printer settings. In particular:
First layer - 0.25, rest - 0.2
This is the layer height, right? Will a 0.4mm nozzle be OK? Any recommendations on infill or any other settings? Thanks.
Yes. I print with 0.4 nozzle. 0.25 fist layer and the rest is 0.2. Slightly thicker firs layer allows for some unevennes in the bed. You can print all in 0.2.
Thank you. I think if something works people post less than somethings that have issues.
How old is your Nese packs?
I printed the V2 module for 4P2S (vented). It came out great.
Hereās comparing the dimensions with V1. Vertical/horizontal is either exactly the same or a negligible difference. The V2 is about 1.5mm thinner though, which is great. I may now be able to fit DS into my enclosure.
Here with battery cells installed. @Agniusm, does this look OK? The tabs at the edges have a good compression but the ones inside not so much. By closing the lid, the box gets compressed slightly more so maybe all is good then. Iāll have to test it.
The way the lid closes on the V2 is SO MUCH BETTER than on V1. It comes on and off easily. No hassle at all. This is a great improvement @Agniusm. Thanks!
Any word on these?
I think I got my first set of bus bars from you in April of 2019. So about a year and a half with the NESE system and no problems. It doesnāt come loose with vibration, is quick to disassemble, and has seemingly no heat problems with or without vented prints. This is all just using the default prints and not some of the custom ones. Definitely worth the price for me.
Hereās some progress on my DS NESE pack using the V2 modules.
I made a holder that I plan to use for attaching the pack directly to the deck. It also keeps the two layers separate. In case some of the tabs in the top layer gets loose it canāt touch the metal in the bottom layer (which would be a dead short). Plus, it creates a channel for balance leads.
Thats a very sexy build. Love it
Thatās so cool. What deck are you going to put it in? Evo?
Thanks! Yes, I have EVO with DS eBoosted enclosure. It will be a tight fit as far as the depth is concerned but I can always put a slightly thicker gasket.
Thatās so clean, good job!
And thanks for providing these, I have Evo deck as well, ready for 2021 build and I planned to do DS NESE 10S8P, but thanks to you I will plan for 12S.
What is the holder printed from? Did you somehow post-process it to gain more strength? Nevertheless you still have enclosure that would hold it even if it would crack somewhere.
Thanks! The holders are printed from PETG and I havenāt done anything to make them stronger. They still feel reasonably strong. Even with just two, the modules are held in place firmly. And there will be 6 of them. Plus, youāre right, thereās still the enclosure and the fit is so tight that when I add a thin layer of neoprene Iāll have the enclosure gently pressing against the battery pack and help hold it in place.
After mocking things up today Iāll be making a small change to the holders. I will add something to help route the cables along the pack. Thereās no space for them on top of the pack. They will have to go along the side of the pack.
BTW, itās 12S7P, not 8P. That wouldnāt fit with this enclosure. I believe you can still make it work with a wider enclosure.