openinverter forum

Gregski wrote: ↑Sun May 08, 2022 1:31 pm am I crazy or is the schematic mislabeled, and what is being called Proximity (pin 5) should actually be called Control?

EVSE Schematic.jpg

No Pin 4 is CP (Control Pilot), Pin 5 is PP (Proximity Pilot) and Pin 3 is PE (Earth).

arber333 wrote: ↑Sun May 08, 2022 1:35 pm

Gregski wrote: ↑Sun May 08, 2022 1:31 pm am I crazy or is the schematic mislabeled, and what is being called Proximity (pin 5) should actually be called Control?

EVSE Schematic.jpg

No Pin 4 is CP (Control Pilot), Pin 5 is PP (Proximity Pilot) and Pin 3 is PE (Earth).

oh sorry, I guess i got the pins mixed up with the "positions" in the connector table further up on that Wiki page (that can be very confusing)

so I am successfully charging the truck using a first gen Chevy Volt charger and Damien's free Arduino sketch off of GitHub, however, I am unable to save the setpoint configuration to the EEPROM on the Arduino Due I am using



Wire.begin();
EEPROM.read(0, parameters);
if (parameters.version != EEPROM_VERSION)
{
parameters.version = EEPROM_VERSION;
parameters.Vol=0;
parameters.Cur=0;
parameters.Term=0;
EEPROM.write(0, parameters);
}







case 'z':
EEPROM.write(0, parameters);
SerialDEBUG.println("Parameters stored to EEPROM");
break;

Gregski wrote: ↑Wed Aug 09, 2023 2:59 pm lessons learned DUE.jpg

Well you could still direct your due code to those basic values you want without eeprom. But true... in the spring i managed to design a due board which didnt allow me to connect USB port...DUH! No eeprom would help as i couldnt select the values.

Didnt that can board come with eeprom chip pinout? I allways assumed so.

So do i send you one of my due boards? I think i still have one functional. I must apologise i forgot last time we discussed this...

Jack Bauer wrote: ↑Mon Feb 15, 2021 3:16 pm Figured I'd share this in case it helps anyone.
https://github.com/damienmaguire/AmperaCharger
Simple program to run on a due (sam3x8e) that controls an Ampera charger over a serial menu.
Confirmed working on my bench setup.

yes two and a half years later The Greg has grabbed the code and is using it to charge his BMW 530e battery pack, the code appears to yield WiFi output, I assume to one of them red cards, but I don't see the code to load on the red card to receive it, being a dumb @ss when I load the charger code on my Lexus GS450h VCU ver 2 and go to the red cards web page 192.168.4.1 I get the Lexus GS450h virtual gauges (well as expected) but that's not what I want


/*
*
* Routine to send data to wifi on serial 2
The information will be provided over serial to the esp8266 at 19200 baud 8n1 in the form :
vxxx,ixxx,pxxx,mxxxx,nxxxx,oxxx,rxxx,qxxx* where :

v=pack voltage (0-700Volts)
i=current (0-1000Amps)
p=power (0-300kw)
m=half pack voltage (0-500volts)
n=Amp Hours (0-300Ah)
o=KiloWatt Hours (0-150kWh)
r=HV Box Temp (0-100C)
q=third pack Volts (0-500Volts)
*=end of string
xxx=three digit integer for each parameter eg p100 = 100kw.
updates will be every 1000ms approx.

v100,i200,p35,m3000,n4000,o20,r100,q50*
*/

Question for anyone who has dug deep into the Chevy Volt Gen1 chargers. Some of the docs available here refer to master and slave modes -- has anyone gotten that mode working? I have two of these, driven using Lilygo T-CAN485 boards. Rather than driving them totally independently, I would really like to get them set up as master-slave to double the output power overall.

relevant quote from Lear_Charger_Documentation_10_23_2014.pdf:
"To configure a charger as a master, pin F (M/S1) is connected to +12V and pin G (M/S2) is connected to ground. To configure a charger as a Slave, pin F (M/S1) is connected to ground and pin G (M/S2) is connected to +12V. "

Steve