garygid
Well-known member
SOC-Meter without Logging Port:
Introduction:
Our SOC-Meter is ALSO programmed to send all the monitored CAN-messages
back to a PC to be Logged, Graphed, etc. The SOC-Meter is a one-channel
device, so it only monitors one CAN bus at any given time.
However, we usually wire both the EV-CAN and the Car-CAN bus
to a left-side CAN-Selector toggle switch.
The messages are being sent out the AVR-CAN's unused
female 9-pin "D" connector, which is an RS232 serial port.
When Logging, it is best to leave the meter in its "SOC mode",
to reduce the CPU load in the SOC-Meter.
We can add a "Logging Port" to the SOC-Meter Box, connecting
just three wires to the AVR-CAN board's 9-pin D-sub connector, which
is not normally connected to anything when building the SOC-Meter.
Then, logging of the entire EV-CAN bus message-stream is relatively
easy and inexpensive, once you have the SOC-Meter (or equivalent).
You need:
1. a portable Windows PC that can run my free CAN-Do program (XP, Vista, Win7),
2. some might want/need an "automobile" 12v power adapter (often $10 to $20)
for their PC for any longer-duration recording sessions,
3. my free CAN-Do program, downloaded from http://www.wwwsite.com/puzzles/cando/" onclick="window.open(this.href);return false;
4. a high-speed RS232 Serial port on the PC, or a sufficiently GOOD
USB-to-RS232 adapter and an available USB port on your PC.
I have some inexpensive (under $5) adapters, but only a few
appear to be OK for CAN-Logging at 115,200 baud.
Most are not quite sufficient for consistant "flashing" of the AVR-CAN board,
or for reliable high-speed communication (our CAN-Logging).
So, for a few dollars and some modest effort, you can actually
LOG and GRAPH your own Charging or Driving data,
saving a LOT of hand-logging effort while driving the LEAF.
And, it is a lot safer to keep your eyes on the road, and examine the data later.
Introduction:
Our SOC-Meter is ALSO programmed to send all the monitored CAN-messages
back to a PC to be Logged, Graphed, etc. The SOC-Meter is a one-channel
device, so it only monitors one CAN bus at any given time.
However, we usually wire both the EV-CAN and the Car-CAN bus
to a left-side CAN-Selector toggle switch.
The messages are being sent out the AVR-CAN's unused
female 9-pin "D" connector, which is an RS232 serial port.
When Logging, it is best to leave the meter in its "SOC mode",
to reduce the CPU load in the SOC-Meter.
We can add a "Logging Port" to the SOC-Meter Box, connecting
just three wires to the AVR-CAN board's 9-pin D-sub connector, which
is not normally connected to anything when building the SOC-Meter.
Then, logging of the entire EV-CAN bus message-stream is relatively
easy and inexpensive, once you have the SOC-Meter (or equivalent).
You need:
1. a portable Windows PC that can run my free CAN-Do program (XP, Vista, Win7),
2. some might want/need an "automobile" 12v power adapter (often $10 to $20)
for their PC for any longer-duration recording sessions,
3. my free CAN-Do program, downloaded from http://www.wwwsite.com/puzzles/cando/" onclick="window.open(this.href);return false;
4. a high-speed RS232 Serial port on the PC, or a sufficiently GOOD
USB-to-RS232 adapter and an available USB port on your PC.
I have some inexpensive (under $5) adapters, but only a few
appear to be OK for CAN-Logging at 115,200 baud.
Most are not quite sufficient for consistant "flashing" of the AVR-CAN board,
or for reliable high-speed communication (our CAN-Logging).
So, for a few dollars and some modest effort, you can actually
LOG and GRAPH your own Charging or Driving data,
saving a LOT of hand-logging effort while driving the LEAF.
And, it is a lot safer to keep your eyes on the road, and examine the data later.