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

Wed May 1 22:06:59 HKT 2019

Not now, I waiting for parts to finish it. I want to use a relay shield.

Michael Balzer <dexter at expeedo.de> ezt írta (időpont: 2019. máj. 1., Sze,
15:37):

> I've added the Twizy modification documentation to the user guide:
>
>
> https://docs.google.com/document/d/16JrXR7rybp-18DrEoeh1rg6GqQT_jVBvhaXh2oEWRHw/edit#heading=h.xc9d76fq2q79
>
> Tamás, have you done the modification for the i-MiEV yet?
>
> Regards,
> Michael
>
>
> Am 27.04.19 um 17:25 schrieb Michael Balzer:
>
> Tamás,
>
> I've pushed an optimization for the speed processing, please note you now
> need to call CalculateAcceleration() after your regular speed update. This
> is necessary as the speed needs to be fed into the acceleration calculation
> on every update, not just changes.
>
> I've also just added the relay to my Twizy as planned, it works nicely.
> Just a little caveat: as Julien foretold, the SERV light turns on while the
> regen brake light is active. So somehow the Twizy in fact does monitor the
> brake light current and thus recognizes the hack. Doesn't matter too much
> to me, I'll use the SERV light as my regen braking indicator ;-)
>
> Regards,
> Michael
>
>
> Am 22.04.19 um 21:41 schrieb Michael Balzer:
>
> Here's a simple web plugin to monitor acceleration levels and regen brake
> signal generation:
>
>
> https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3/blob/master/vehicle/OVMS.V3/components/ovms_webserver/dev/regenmon.htm
>
>
> Am 22.04.19 um 19:24 schrieb Tamás Kovács:
>
> Now I tested a little bit. Works fine, bright the led when recuperating.
> But I look at the code and I not understand:
>
> accel = (speed - m_accel_refspeed) / (now - m_accel_reftime) * 1000;  //
> smooth out road bumps & gear box backlash: accel =
> (StdMetrics.ms_v_pos_acceleration->AsFloat() * m_accel_smoothing + accel) /
> (m_accel_smoothing + 1);
>
> Use same variable, I think the first is unnecessary now.
>
>
> Beg your pardon…?
>
> The first line calculates the momentary acceleration, the second sends
> that value through a standard lowpass filter.
>
> If you mean it could be written in one line, you're right, but I prefer
> readability.
>
> Regards,
> Michael
>
>
>
>
> Michael Balzer <dexter at expeedo.de> ezt írta (időpont: 2019. ápr. 22., H,
> 11:13):
>
>> Pushed:
>>
>>
>> https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3/commit/b44d466580b6961ada5ae42500c3fea68cab0f8a
>>
>> - Vehicle framework: regenerative braking signal generation
>>
>>   New config:
>>     vehicle [accel.smoothing] = 2.0     Acceleration smoothing factor
>> (samples, 0 = none)
>>     vehicle [brakelight.enable] = no    Regen brake light enable
>>     vehicle [brakelight.port] = 1       … MAX7317 output port number (1,
>> 3…9, default 1 = SW_12V)
>>     vehicle [brakelight.on] = 1.3       … activation threshold
>> (deceleration in m/s²)
>>     vehicle [brakelight.off] = 0.7      … deactivation threshold
>> (deceleration in m/s²)
>>
>>   New metrics:
>>     v.p.acceleration    = acceleration/deceleration in m/s² derived from
>> v.p.speed
>>     v.e.regenbrake      = regenerative brake light state
>>
>> - Twizy web UI: regenerative braking signal configuration
>>
>>
>> I've tested this using an LED on EGPIO_8, I'll do & document the Twizy
>> hardware modification next weekend (if I receive my order in time…).
>>
>> @Tamás: to add the UI to the Mitsubishi code:
>>
>>
>> https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3/blob/master/vehicle/OVMS.V3/components/ovms_webserver/src/web_displays.cpp#L1127
>>
>> Regards,
>> Michael
>>
>>
>> Am 22.04.19 um 04:12 schrieb Mark Webb-Johnson:
>>
>> Yes, EGPIO1 had to be used for SN65 control so is not available for
>> general use.
>>
>> Max7317 has 10 outputs (P0 .. P9):
>>
>>
>>    - P0 MDM EN (controls modem power)
>>    - P1 SW CTL (to BTS452 for EXT 12v power control)
>>    - P2 EGPIO1 (SN65 transceiver power saving control)
>>    - P3 EGPIO2 available for general use
>>    - P4 EGPIO3 available for general use
>>    - P5 EGPIO4 available for general use
>>    - P6 EGPIO5 available for general use
>>    - P7 EGPIO6 available for general use
>>    - P8 EGPIO*7* available for general use
>>    - P9 EGPIO*8* available for general use
>>
>>
>> Regards, Mark
>>
>> On 22 Apr 2019, at 3:36 AM, Michael Balzer <dexter at expeedo.de> wrote:
>>
>> Mark,
>>
>> btw: is EGPIO_1 not free for general use? The esp32can SN65 seems to be
>> controlled by that line.
>>
>> Regards,
>> Michael
>>
>>
>> Am 21.04.19 um 15:01 schrieb Mark Webb-Johnson:
>>
>> 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> 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
>>
>> Michael Balzer <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> 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> 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>
>>>>> 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>
>>>>> 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>
>>>>> 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> 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
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> OvmsDev mailing listOvmsDev at lists.openvehicles.comhttp://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>>>>
>>>>>
>>>>> --
>>>>> Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
>>>>> Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
>>>>>
>>>>> _______________________________________________
>>>>> OvmsDev mailing list
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>>>>> http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>>>>
>>>>> _______________________________________________
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>>>>>
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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
>>>>>
>>>>> _______________________________________________
>>>>> OvmsDev mailing list
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>>>>> http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>>>>
>>>>
>>>>
>>>> --
>>>> Üdvözlettel:
>>>> Kovács Tamás
>>>>
>>>> _______________________________________________
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>>>>
>>>>
>>>> --
>>>> Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
>>>> Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
>>>>
>>>> _______________________________________________
>>>> OvmsDev mailing list
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>>>> http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>>>
>>>
>>>
>>> --
>>> Üdvözlettel:
>>> Kovács Tamás
>>>
>>> _______________________________________________
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>>>
>>>
>>> --
>>> Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
>>> Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
>>>
>>>
>>> _______________________________________________
>>> OvmsDev mailing listOvmsDev at lists.openvehicles.comhttp://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>>
>>>
>>> --
>>> Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
>>> Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
>>>
>>> _______________________________________________
>>> OvmsDev mailing list
>>> OvmsDev at lists.openvehicles.com
>>> http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>>
>>
>>
>> --
>> Üdvözlettel:
>> Kovács Tamás
>> _______________________________________________
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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
>>
>> _______________________________________________
>> OvmsDev mailing list
>> OvmsDev at lists.openvehicles.com
>> http://lists.openvehicles.com/mailman/listinfo/ovmsdev
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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
>>
>> _______________________________________________
>> OvmsDev mailing list
>> OvmsDev at lists.openvehicles.com
>> http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>
>
>
> --
> Üdvözlettel:
> Kovács Tamás
>
> _______________________________________________
> OvmsDev mailing listOvmsDev at lists.openvehicles.comhttp://lists.openvehicles.com/mailman/listinfo/ovmsdev
>
>
> --
> Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
> Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
>
>
> _______________________________________________
> OvmsDev mailing listOvmsDev at lists.openvehicles.comhttp://lists.openvehicles.com/mailman/listinfo/ovmsdev
>
>
> --
> 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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