[Ovmsdev] Brake light control (was Re: Prototyping expansion board)
Michael Balzer
dexter at expeedo.de
Mon Apr 22 03:21:36 HKT 2019
Yes.
Am 21.04.19 um 19:50 schrieb Tamás Kovács:
> Am I correct?
> I connect a simple relay to DA26 expansion pin8(GND) and pin18(Switched 12V), and relay another end to the brake switch. And if the battery power is negative
> (recuperating), i power on the switched 12V with the following code:
>
> MyPeripherals->m_max7317->Output(MAX7317_SW_CTL, 1);
>
> Mark Webb-Johnson <mark at webb-johnson.net <mailto:mark at webb-johnson.net>> ezt írta (időpont: 2019. ápr. 21., V, 15:02):
>
> If changing vehicle.{h, cpp} framework, I suggest leaving a hook in to allow the vehicle module to override / supplement this. In particular, the brake
> light may be controllable via can message on some vehicles.
>
> You can look at the ext12v circuit to see how to control this.
>
> The ext12v system is a switchable 12v line already wired up and available on DA26 expansion. Would be trivial to put an external relay on that to switch
> brake lights.
>
> Regards, Mark.
>
>> On 21 Apr 2019, at 1:32 AM, Tamás Kovács <kommykt at gmail.com <mailto:kommykt at gmail.com>> wrote:
>>
>> JP1 pin 1 (+3.3) ----- [ 680 Ohms ] ---+--- [ LED ] ----- pin 28 (GND)
>> |
>> pin 12 (EGPIO_8)
>>
>> I can connect a 680Ohm resistor first end to pin1, a second end to pin12, and the led positive side to pin12 and negative to pin28(gnd). Now I have only
>> 470ohm resistor at home, I tested now with a 4V li-ion battery and my red led power is 4mA. I can use this (470Ohm) resistor or buy a 680Ohm.
>> Tomorrow I remove the OVMS module from my car, and create some test, if the resistor (470Ohm) is OK.
>> I used this calculator for led series resistor calculation (I used a red Led): http://ledcalc.com <http://ledcalc.com/>
>>
>> Michael Balzer <dexter at expeedo.de <mailto:dexter at expeedo.de>> ezt írta (időpont: 2019. ápr. 20., Szo, 11:16):
>>
>> Be aware the MAX71317 outputs are open drain, so you need a pull up resistor to e.g. +3.3. According to the data sheet, the current should stay below
>> 6 mA.
>>
>> I've just done a quick test wiring like this:
>>
>> JP1 pin 1 (+3.3) ----- [ 680 Ohms ] ---+--- [ LED ] ----- pin 28 (GND)
>> |
>> pin 12 (EGPIO_8)
>>
>> Works as expected.
>>
>> Regards,
>> Michael
>>
>>
>> Am 19.04.19 um 09:59 schrieb Michael Balzer:
>>> 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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>>>>>
>>>>> --
>>>>> 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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>>
>> --
>> 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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>
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> 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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