2662

I was only planning on ordering so many boards just to have them for future projects. Instead of paying shipping again.

Also if I was to order them from that link from the UK would they arrive faster than jlcpcb? My last order took about a week to get to the US

2663

JLC usually take 10-15 days depending on the service you pay for.

2664

Oh, last time I just ordered blank pcb’s not there SMT service

So I would receive them faster if I got them for the UK? And there pre-built I’m assuming correct?

2665

Hi im just about to order some boards from jlc, i notice the part they have put in Q1 position isnt the exact one from your BOM file they have filled it with this

‘MOSFET N Trench 30V 5.8A 1.4V @ 250uA 35 mΩ @ 5.8A,10V SOT-23 RoHS’ part number C347475

instead of part number C20917 from your BOM
N Channel 30V 5.7A 1.5V @ 250uA 26.5mΩ @ 5.7A,10V 1.4W SOT-23-3L MOSFET RoHS

Will this do the same job? Thanks Jack

2666

Forget that ive just seen your link to UK shop and ive ordered from there! Thanks looking foward to setting it up!

1 Like
2667

@stuart i got the v4 board of the cell module and the cell module, can i use the latest code and where do i find the BOM for the v4 board. I need to check whether i have all the components needed since i ordered quite a while back the components.

2668

They are 95% complete, but come with all the parts needed to assemble.

2669

The BOM for v4 is in the master branch on GitHub.

https://github.com/stuartpittaway/diyBMSv4/blob/master/CellModules_LCSC_BillOfMaterials.xlsx

2670

Could someone tell me what cable i should search for and buy to go from the controller to the 5v relay board please? I tried male to male 6 pin JST but im not sure this is right. Thanks

2671

Search for ‘dupont connector’ 2.54mm

1 Like
2672

Or you can just solder the pins together.

1 Like
2673

Hey guys, I have a question on the boards.
The Sensor 1; 5 pin: What plugs into that or what does that go to operating?
The other Pin (AVR-ISP-6) what is it for?

I’ve tried looking up youtube vids, gone back to schematic and looked over the datasheet. I’m too n00b so any assistance is greatly appreciated.

Ty, Jesse James

V4update_question
V4update_question904×666 167 KB

2674

This might help for those that want to do a Lithium Titanate Oxide (LTO) battery bank and order through JLCPCB, these values can only be used in LTO chemistry battery, warning do not use for any other type of batteries

v4_bom_jlc_titanate.csv (778 Bytes)
v4_cpl_jlc_titanate.csv (2.0 KB)

1 Like
2675

Has anyone gone about putting a heatsink on the resistor bank for greater heat dissipation?

2676

Did you move the onboard thermistor?

2677

Hey fellaz,

I’m glad to part of the family.

Just placed my order for all the boards.

Also a 4-channel 5v relay module and 100a SSR.

For current monitoring, I found a
ACS758LCB-100B-PFF-T rated for 100 amps.

As for temperature monitoring what type of thermistor is recommended?

Is there a repository or a place or I can find information on what type of sensors and add-ons are being used with the diybms and how to implement them?

1 Like
2678

The sensor port - only 2 pins are used to connect an external temperature sensor.

The ISP header is to program the ATTINY micro controller using a USBASP programming adapter.

2679

I brought 20mm x 14mm x 6mm high heatsinks to try out on resistor bank ( 4 set of 20 )
https://www.ebay.com.au/itm/402252266112.
I am a bit impatient as the boards have not turned up in the mail yet.

2680

Ty Stuart, that makes much more sense in my head now :slight_smile:

2681

Just make sure you insulate between the heatsink and the resistors or they will short out.