hello,
after various tests and builds I’ve come up with two “evolutions” to @Jau design. Evolution is a big word, basically rearranging a few bits to make things happen. Only item changed from his original design is the D1 which is out of stock on JLCPCB. Ah, and added the external TempSensor in a way that it’s easy to cut away but since it’s actually connected with tracks to the ext connector JLCPCB consider it as one board and wont charge extra. Even if you don’t cut it off it will report temps (admittedly quite similar to the internal sensor ones…)
LishenEVE_v1.7ovF
which adds a larger oval on the pads where the battery terminals fit enabling easier 89-91mm spacing and adds jumpers to be able to disconnect the module for updating firmware without taking the whole battery apart.
Zip file to send to JLCPCB (unzip the file and there’s the gerber and the two csvs):
LishenEVE_v1.7ovF.zip (109.3 KB)
and for anyone who wants to play with it the json that loads straight into EasyEDA:
PCB_DIYBMS_LishenEVE_v1.7ovF_2022-01-23.json.zip (119.8 KB)
72-123mm_v1.8F
second version goes a bit further by enabling terminal spacing from 72 to 123mm. Main reason for doing it is that EVE 304 changed to 123mm spacing out of the 90mm and seems to be impossible to know for sure what you’re actually ordering from China… Considering that shipments from there take 2m+ I feel it’s better to be safe than sorry.
Zip file for JLCPCB:
72-123mm_v1.8F.zip (109.4 KB)
and json that loads into EasyEDA for editing:
PCB_DIYBMS_72-123mm_v1.8F_2022-01-23.json.zip (118.7 KB)
NOTE- Missing bits:
ATTiny (as always…)
Q1 Mosfet (tried another one but didn’t work, so has to be ordered separately, it is available and relatively easy to solder)
JST-2-PTH side connectors also missing, easy to solder and decide which side (or one each) suits your setup.
thanks to all involved hope that helps someone!
cheers
V