LCD Instrumentation for Cougar Controller

[ianbartie]

Here is a pic of my Cougar LCD diplay about ready to go back into the car.
It used to be the ash tray in the console once upon a time.
The little restangular thing at the rear of the LCD is the remote programming port so I can change stuff without having to pull the centre console out all the time.
2 little tiny PCB push button switches fit in the holes on the left of the LCD.
When I don't want to see the display, the lid closes down over the whole thing.

[adamj12b]

Originally Posted by ianbartie

Here is a pic of my Cougar LCD diplay about ready to go back into the car.
It used to be the ash tray in the console once upon a time.
The little restangular thing at the rear of the LCD is the remote programming port so I can change stuff without having to pull the centre console out all the time.
2 little tiny PCB push button switches fit in the holes on the left of the LCD.
When I don't want to see the display, the lid closes down over the whole thing.

That is an awesome idea. Just slip the cover over it and you will never tell its there.

The link was messed up with a space in it.

http://www.digitalhometech.com.au/evpics/lcddisplay.jpg

-Adam

[apowers]

That really does look great. I got new PCB in the mail yesterday. Thank you.
Alvin

[Freyguy]

Very nice Ian!

[Freyguy]

Sorry for the delay, but have been busy and the display refresh change turned into a real chore. Turns out my ADC rolling average of 16 (for analog filtering) relies on the time of the display routine. In bypassing it for x number of cycles, it significantly impacts this averaging algorithm. So I had to redo one timer routine and make adjustments throughout the code.

Charge mode(for those will halls sensors for bAmps)
1. Powering on will display the charge screen after 2 seconds if charge current (bAmp) greater than 2A is detected. Mode LED blinks once per second. After 2 minutes, charge screen will display even if charge current goes to 0. This was done so that when charging is finished and the charger turns off (all depends on your charger), the charge screen will remain displayed so you can check the total charge time and final SOC.

2. In charge mode, the bAmp level is still monitored. When it is =< parameter min_cAmp, the charge timer will stop and Mode LED will stop blinking. This is necessary to display an accurate cTime. i.e. timer will stop when charging is complete or when moving into trickle charge

3. SW1 serves no function, you are locked into the charge screen.


VR1 setup
For those who already had their systems up and running in their car, you should make the following re-adjustment to VR1 BEFORE programming with this new code.
Turn VR1 clockwise until bAmp shows 25A (Tamura 400A) or 45A (Lem Hass 300). After programming, bAmps should be exactly 0A with no battery current flowing.

For those using this code on a new build your procedure is a little different since position of VR1 is unknown. 4 seconds after poweron, see which screen is showing.
-If it is the Volts, amp screen, VR1 should be turned counterclockwise to lower battery amps to 0. Turn VR1 slowly and stop right as 0 shows.
-If it is the charge mode screen, turn VR1 clockwise. bAmps will decrease and it will switch to Volt, amp screen. Continue turning until bAmp increases to 3, then reverse to counterclockwise to bring it just down to 0. I have added a bit of hysteresis on the charge side so charge currents less than 2A will not put it into charge mode display.

Display Refresh Rate
Parameter “D_refresh” determines how fast the LCD display will update values.
1 is default and is the same as current. A value of 50 makes it update once per second.
100 once every 2 seconds, etc. NOTE: This does exactly as it says, so if you have your refresh setup for 2 seconds and you press SW1 to change screens, you may have to wait that long depending when the switch was detected during the timing loop.

I updated the docs to support/explain all of this, but too large to attach here.
Attached are the ASM's only. Sawickm, I'll email you the updates this evening.

[1-ev.com]

Can you please post support DOC on WIKI ? :-)

[Freyguy]

I checked and version 1.3 firmware and docs are there.
Open ReVolt/PCB Schematics - EcoModder


Thanks Mark!

[sawickm]

Originally Posted by Freyguy

I checked and version 1.3 firmware and docs are there.

Freyguy,

Yes, I just finished adding all the files into the wiki that you emailed me.

-Mark

[Freyguy]

Since it appears that getting the Tamura 400A sensor is almost impossible, I wanted to let everyone know that the LEM Hass 300-S can also be used. Starting with version 1.3 I placed the mod used by Jackbauer into the code at lines 1305~1310. They are commented out and typically ignored during compile. Just removed the leading semicolons on these lines before compiling and you can use the LEM.

-Chris

[1-ev.com]

Originally Posted by Freyguy

Since it appears that getting the Tamura 400A sensor is almost impossible, I wanted to let everyone know that the LEM Hass 300-S can also be used. Starting with version 1.3 I placed the mod used by Jackbauer into the code at lines 1305~1310. They are commented out and typically ignored during compile. Just removed the leading semicolons on these lines before compiling and you can use the LEM.

-Chris

Hey Chris,

It looks like LEM Hass 300-S going up to 300A.

Can we use something larger then 300A?

Let say LEM Hass 500-S or LEM Hass 600-S

it looks like digikey has 48 on hand of HASS 400-S:

http://search.digikey.com/scripts/Dk...1966573&k=Hass

Thank you.
-Y.