chris1howell
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Delivery Date: 15 Jun 2011
Leaf Number: 4122
Location: Lancaster, Ca

Re: SOC-LCD-Meter "LeafCAN" with 2x16 Display by lincomatic

Mon Jun 18, 2012 12:00 pm

Yes, I do have another set of prototype boards coming very soon (1 - 2 weeks). Once validated, I will order a panel of 25 or so boards (another week).

Because Gary is making very good progress on a more powerful SOC that reads both busses, has data logging to SD, time stamping and other great features I decided to keep this SOC version as basic, simple and inexpensive as possible...

Supports 1 CAN bus at a time - can be reconfigured with jumpers or maybe a cable dongle.
16 x 2 LCD support with sleep mode and software definable contrast and brightness.
I/O pins available for buttons but they are optional.
Headers for FTDI USB, bluetooth or xbee etc.
Board has provision for onboard USB FTDI.
ODB cable is removable and connects with a RJ45 like Scangauge II.
Parts cost should be less than $100 (SOC board, LCD, ODB cable, enclosure)
Kits and Assembled versions TBD
Last edited by chris1howell on Mon Jun 18, 2012 12:15 pm, edited 1 time in total.
2011 LEAF: Red SL #04122
2012 Tesla Model S #01530
EVSE: OpenEVSE, 40A L1/L2 -- http://www.openevse.com
PV System: 28 x 210W -> 5.8 kW DC

OpenEVSE Store: http://store.openevse.com

lincomatic
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Joined: Fri Jun 10, 2011 10:01 am
Delivery Date: 06 Apr 2011
Leaf Number: 3819

Re: SOC-LCD-Meter "LeafCAN" with 2x16 Display by lincomatic

Mon Jun 18, 2012 12:13 pm

Actually, the current version already has data logging capabilities, but right now, it's just a raw binary dump.

As far as multiple screens go, the hardware is set up to allow a few buttons to be added; I just haven't
found any need for that, currently.

I'm open to suggestions for added features, and since it's open source, anyone can feel free to hack it.
I would appreciate it if anyone adds useful features that they share the code, as well.

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garygid
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Leaf Number: 000855
Location: Laguna Hills, Orange Co, CA

Re: SOC-LCD-Meter "LeafCAN" with 2x16 Display by lincomatic

Mon Jun 18, 2012 9:25 pm

With this new board, how will the user adjust
the LCD contrast and brightness?
See SOC/GID-Meter and CAN-Do Info
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chris1howell
Posts: 649
Joined: Tue Aug 10, 2010 1:40 pm
Delivery Date: 15 Jun 2011
Leaf Number: 4122
Location: Lancaster, Ca

Re: SOC-LCD-Meter "LeafCAN" with 2x16 Display by lincomatic

Wed Jun 20, 2012 1:32 pm

Gary the board has 4 I/O pins accessible to add whatever switch, button or rotary encoder etc. you would like if you wish to dynamically set the contrast and brightness values.

I plan to keep mine very simple with no buttons. Contrast is normally “set and forget”, most LCD have a physical trim pot. I will set the default contrast value in the firmware and probably never touch it again. For brightness, I plan to set a value for day, night and sleep and again will probably never touch it again.

I am hoping to have a device that is very small, simple to assemble, inexpensive and easy to operate.
2011 LEAF: Red SL #04122
2012 Tesla Model S #01530
EVSE: OpenEVSE, 40A L1/L2 -- http://www.openevse.com
PV System: 28 x 210W -> 5.8 kW DC

OpenEVSE Store: http://store.openevse.com

lincomatic
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Re: SOC-LCD-Meter "LeafCAN" with 2x16 Display by lincomatic

Wed Jun 20, 2012 2:24 pm

We could just hook up the backlight to a PWM pin for brightness

chris1howell
Posts: 649
Joined: Tue Aug 10, 2010 1:40 pm
Delivery Date: 15 Jun 2011
Leaf Number: 4122
Location: Lancaster, Ca

Re: SOC-LCD-Meter "LeafCAN" with 2x16 Display by lincomatic

Wed Jun 20, 2012 4:25 pm

We could just hook up the backlight to a PWM pin for brightness
The v2 prototype board has both brightness and contrast on a PWM pin.
2011 LEAF: Red SL #04122
2012 Tesla Model S #01530
EVSE: OpenEVSE, 40A L1/L2 -- http://www.openevse.com
PV System: 28 x 210W -> 5.8 kW DC

OpenEVSE Store: http://store.openevse.com

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garygid
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Re: SOC-LCD-Meter "LeafCAN" with 2x16 Display by lincomatic

Thu Jun 21, 2012 3:42 pm

chris1howell wrote: I am hoping to have a device that is very small, simple to assemble, inexpensive and easy to operate.
Chris,
A good goal, I agree.
I was going to use my current Enclosure, but maybe you have
a better idea for packaging a "very" small unit?

Please let me know then I can buy a populated Version-2 board
so that I can make another prototype LCD "SOC" Meter.
Thanks, Gary
See SOC/GID-Meter and CAN-Do Info
2010 Prius
2011 LEAF, 2014 Tesla S85
2018 & 2019 Tesla Model 3
PU: SDG&E
Solar PV: 33 x 225W -> 7 kW max AC
Craigslist: Xm5000Li Electric Motorcycle

chris1howell
Posts: 649
Joined: Tue Aug 10, 2010 1:40 pm
Delivery Date: 15 Jun 2011
Leaf Number: 4122
Location: Lancaster, Ca

Re: SOC-LCD-Meter "LeafCAN" with 2x16 Display by lincomatic

Thu Jun 21, 2012 7:34 pm

Lincomatic is doing experiments with 3d printing. If that does not go well I might try laser cut acrylic.
2011 LEAF: Red SL #04122
2012 Tesla Model S #01530
EVSE: OpenEVSE, 40A L1/L2 -- http://www.openevse.com
PV System: 28 x 210W -> 5.8 kW DC

OpenEVSE Store: http://store.openevse.com

lincomatic
Posts: 316
Joined: Fri Jun 10, 2011 10:01 am
Delivery Date: 06 Apr 2011
Leaf Number: 3819

Re: SOC-LCD-Meter "LeafCAN" with 2x16 Display by lincomatic

Fri Jun 22, 2012 12:11 am

chris1howell wrote:Lincomatic is doing experiments with 3d printing. If that does not go well I might try laser cut acrylic.
Speaking of which ... I just finished assembling the carriage of my prototype of the new 3D printer I'm designing, and it's flying 4x the speed of my Printrbot, with zero vibration. Should be able to finish assembly and try some real printing with it tomorrow.

bradbissell
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Leaf Number: 404629
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Re: SOC-LCD-Meter "LeafCAN" with 2x16 Display by lincomatic

Fri Jun 22, 2012 3:28 am

Chris,

How small do you think the Ver2 will be after assembly?
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