Updated schematics with inductance and capacitance values.
You must have +12v to pins 7 & 12 of the BMS.nikmaster said:You did great job with this research, Turbo3
I've been trying also yesterday to connect the OBD/Bluetooth (same as yours) to the BMS, but without any batteries - it does not make any connection to the BMS.
Powered all 3 lines - connected together to +12V. The processor has power and some CAN info on the oscilloscope at pin 1 and pin 13.
But no connection on the Leaf Spy Pro. Tested with 3 different BMS - same result.
Is there any specific settings on the Leaf Spy to connect directly to the BMS, not looking for the other car computers?
It does not read even the temperatures either, act like no connection. Each CAN side has 120ohm resistor.
The android with the same OBD/Bluetooth on a car works.
I have few pieces of these BMS 2012,2013 models left, can provide if somebody interested to do experiments.
Thanks
Turbo3 said:You must have +12v to pins 7 & 12 of the BMS.
When you wire up the OBDII socket you must wire the EV-CAN from the BMS to Car-CAN of the OBDII Socket.
BMS pin 1 CAN-H to OBDII socket pin 6
BMS pin13 CAN-L to OBDII socket pin14
Power and Ground to OBDII socket too
On LeafSpy Pro you must select BMS as the model year in settings (selection before 2011).
Anything less than the original 96 cells will require rewiring of the BMS board and some care to not burn out the ICs.nikmaster said:Turbo3 said:You must have +12v to pins 7 & 12 of the BMS.
When you wire up the OBDII socket you must wire the EV-CAN from the BMS to Car-CAN of the OBDII Socket.
BMS pin 1 CAN-H to OBDII socket pin 6
BMS pin13 CAN-L to OBDII socket pin14
Power and Ground to OBDII socket too
On LeafSpy Pro you must select BMS as the model year in settings (selection before 2011).
Thanks. Works. The problems was the "BMS" option - I did not mention it.
Will test it with the current sensor and pack of 16 cells to see how is doing. Also will test it in charging if that BMS will try to do balancing. Probably not, but for monitoring system still can be used.
I will post the results here.
Turbo3 said:Anything less than the original 96 cells will require rewiring of the BMS board and some care to not burn out the ICs.
I have been wondering what micro-controller they use. I noticed that on anothernikmaster said:I have few pieces of these BMS 2012,2013 models left, can provide if somebody interested to do experiments.
Thanks
cliff said:I have been wondering what micro-controller they use. I noticed that on anothernikmaster said:I have few pieces of these BMS 2012,2013 models left, can provide if somebody interested to do experiments.
Thanks
micro-controller that I was using, that the documentation indicated that even
though the flag is set that that says you can not read the code, that the code
could still be read using the JTAG interface. I would be curious to see if that
holds true for the BMS micro-controller.
Thanks for the info. From the documentation this controller is more protected.nikmaster said:On the controller says:
70F3236
Here is the link to the PDF:
http://pdf.datasheetarchive.com/indexerfiles/Datasheets-IS26/DSA00511174.pdf" onclick="window.open(this.href);return false;
Review this thread for how to read BMS information.Glyndwr1998 said:Hi to the forum, was directed here from another forum member from a renewables forum.
I have got a leaf battery from a 2014 model gen 2 cells, complete. I want to use the complete pack in a home energy recovery system to work with my solar pv and a ups.
Is it possible to connect a micro controller like an arduino or duinomite with can bus connector, Imwoiod definately use leafspy with an elm327 as an instant visual display to indicate the condition of the pack, but I would also like to use the same can messages for battery voltage, pack voltage and temperature sensors into an arduino to control the charge and discharge process.
The leafspy already knows what these messages are as they are already reading and displaying them.
I'd need to know what the can message addresses are to write them into code for the micro controller.
Any help would be very much appreciated.
Thank you. Anthony.
Glyndwr1998 said:Hi to the forum, was directed here from another forum member from a renewables forum.
I have got a leaf battery from a 2014 model gen 2 cells, complete. I want to use the complete pack in a home energy recovery system to work with my solar pv and a ups.
Is it possible to connect a micro controller like an arduino or duinomite with can bus connector, Imwoiod definately use leafspy with an elm327 as an instant visual display to indicate the condition of the pack, but I would also like to use the same can messages for battery voltage, pack voltage and temperature sensors into an arduino to control the charge and discharge process.
The leafspy already knows what these messages are as they are already reading and displaying them.
I'd need to know what the can message addresses are to write them into code for the micro controller.
Any help would be very much appreciated.
Thank you. Anthony.
Enter your email address to join: