[Ovmsdev] Brake light control (was Re: Prototyping expansion board)

Michael Balzer dexter at expeedo.de
Fri Apr 19 15:59:10 HKT 2019


Sure.

You need to route an EGPIO line to the DA26 port. For a first test you can add a simple jumper on expansion port pins 10/12 to route EGPIO_8 to GEP_7 (= pin 21
on DA26).

You should then be able to use the "egpio" command to test your LED. EGPIO_1 … _8 labels correspond to MAX7317 ports 2 … 9, so to control EGPIO_8, do:

    OVMS# egpio output 9 1  # EGPIO_8 on
    OVMS# egpio output 9 0  # EGPIO_8 off

(correct me if I'm wrong, Mark)

I wasn't aware there are other cars in need of something like this. I'll think about adding the logic as an option to the vehicle framework, but I can send you
some patch to test this on your i-MiEV/clone first.

Regards,
Michael


Am 19.04.19 um 09:24 schrieb Tamás Kovács:
> I can add for testing a simple led (with resistor) , same as SimpleConsole (twizy OVMS V2), to show car is recuperating, connected to DA26 external expansion
> port?
>
> Michael Balzer <dexter at expeedo.de <mailto:dexter at expeedo.de>> ezt írta (időpont: 2019. ápr. 19., P, 9:17):
>
>     As the Mitsubishi code also reads battery current/power level from CAN, it would be trivial to add the same logic there.
>
>
>     Am 19.04.19 um 06:52 schrieb Tamás Kovács:
>>     The Trio (Mitsubishi I-Miev and clones) does not activate the brake light on recuperation on 2105 and older models, if this is work is very impressive.
>>
>>     Michael Balzer <dexter at expeedo.de <mailto:dexter at expeedo.de>> ezt írta (időpont: 2019. ápr. 18., Cs, 23:08):
>>
>>         Mark,
>>
>>         that looks very good. Not sure about general demand, but I think we should have this to enable simple custom hardware I/O extensions.
>>
>>         For the Twizy, I was thinking about adding logic to control the brake light from the module. The Twizy does not activate the brake light on
>>         recuperation, as that's normally (untuned) not very strong. But a tuned Twizy allows one pedal driving, so needs this.
>>
>>         Looking at our case I also think one custom extension board should fit on top of the modem.
>>
>>         Regards,
>>         Michael
>>
>>
>>         Am 18.04.19 um 02:36 schrieb Mark Webb-Johnson:
>>>         It seems the attachments were messed up, so attaching again…
>>>
>>>         Regards, Mark.
>>>
>>>
>>>
>>>
>>>
>>>>         On 17 Apr 2019, at 10:07 PM, Mark Webb-Johnson <mark at webb-johnson.net <mailto:mark at webb-johnson.net>> wrote:
>>>>
>>>>
>>>>             Design layout. Looks good to me, but open to suggestions...
>>>>
>>>>
>>>>             We can make in sets of three PCBs, to keep prices down.
>>>>
>>>>
>>>>             Regards, Mark
>>>>
>>>>
>>>>         On 8 Apr 2019, at 12:05 PM, Mark Webb-Johnson <mark at webb-johnson.net <mailto:mark at webb-johnson.net>> wrote:
>>>>
>>>>>
>>>>>         A kit of 5 PCBs + SIP edge connectors + mounting hardware, unsoldered, would be about US$15 + shipping. About US$3/board set. With shipping I
>>>>>         don’t think this is worth doing with less than 3 or 5 boards per kit.
>>>>>
>>>>>         Would this be useful?
>>>>>
>>>>>         Regards, Mark.
>>>>>
>>>>>>         On 7 Apr 2019, at 9:08 PM, Mark Webb-Johnson <mark at webb-johnson.net <mailto:mark at webb-johnson.net>> wrote:
>>>>>>
>>>>>>         This is the closest we have today:
>>>>>>
>>>>>>         <image1.jpeg>
>>>>>>
>>>>>>         That is a bare modem board, with just the sip connectors. The prototype above is a K-line transceiver.
>>>>>>
>>>>>>         I think it would be trivial, and cheap, to make up what you show. Perhaps just solder ready pads at 0.1” pitch, then the side sip connectors
>>>>>>         wired to the first row of pads at each edge. Perhaps 5 PCBs in a kit, with sip edge connectors, unsoldered, in a simple plastic bag.
>>>>>>
>>>>>>         Does that sound like something useful? If so, I can ask the China guys for some idea of pricing. If it is just the unsoldered pcbs + parts, I
>>>>>>         don’t think it will be expensive.
>>>>>>
>>>>>>         Regards, Mark
>>>>>>
>>>>>>         On 7 Apr 2019, at 4:38 PM, Michael Balzer <dexter at expeedo.de <mailto:dexter at expeedo.de>> wrote:
>>>>>>
>>>>>>>         Mark,
>>>>>>>
>>>>>>>         do you know of some kind of prototyping board available that fits to our piggy back expansion layout?
>>>>>>>
>>>>>>>         Something like this: https://www.robotshop.com/de/de/cytron-arduino-proto-schild.html
>>>>>>>
>>>>>>>         Regards,
>>>>>>>         Michael
>>>>>>>
>>>>>>>
>>>>>>>         Am 03.04.19 um 06:48 schrieb Mark Webb-Johnson:
>>>>>>>>
>>>>>>>>         If you have work to do on this DA26 expansion ports, this is pretty cool and well built:
>>>>>>>>
>>>>>>>>             https://www.aliexpress.com/item/26-Pin-D-SUB-DB26-3-Rows-Serial-Parallel-Port-Serial-Shellless-Male-And-Female-Connector/32886738786.html?spm=a2g0s.9042311.0.0.20924c4dg34EEU
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
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>>>>>>>
>>>>>>>         -- 
>>>>>>>         Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
>>>>>>>         Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
>>>>>>>         _______________________________________________
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>>>>>
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>>
>>         -- 
>>         Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
>>         Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
>>
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>>
>>
>>     -- 
>>     Üdvözlettel:
>>     Kovács Tamás
>>
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>
>     -- 
>     Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
>     Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
>
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>
>
> -- 
> Üdvözlettel:
> Kovács Tamás
>
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-- 
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26

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