- OvmsDev - Open Vehicles

OVMS Hardware 4.0
by rohit＠ekraft.asia 10 Aug '21

10 Aug '21

Hello OVMS dev's, I am basically hardware designer planning to use the OVMS on my MG ZS EV ( Indian version ). For this I designed the hardware containing 4g module as well as all the components on single PCB. Have a look on below: Top Side Bottom side The hardware features are as follows: 1. 4G module with active GPS antenna support ( sim7600 ) 2. ESP32 as main processor ( similar to ovms rev 3) 3. Sim and sd card in stacked single slot to save space 4. 3 can bus ports 5. Battery backup in case need to use this device as security. On board charging 6. Accelero/ gyro combined low power device 7. ACC detection in case of supported from vehicle from OBD port 8. Fully power control of each and every component and low power sleep mode 9. Input power supply up-to 60 V 10. RGB led for status indication The device case would be as below in which OBD connector would be there. Do let me know if we need to add something so hardware is future ready. Regards, Rohit Soni +91-9660770212

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Re: [Ovmsdev] Simcom 7000G
by Derek Caudwell 26 Jul '21

26 Jul '21

Hi all, I've been using Realterm to look at the 7000G's capabilities, and although the documentation only makes indirect reference to supporting uart multiplex mode, it does accept the AT+CMUX=0 command and reports back configuration values when queried with AT+CMUX? Unfortunately that appears to be where its support ends, the device responds with OK to the CMUX command however there is no response to the SABM command to open the control channel. I am sending the following hex in Realterm $F9 $03 $3F $01 $1C $F9. Is there anything else worth trying? or that I'm missing in setting up the CMUX? Cheers Derek

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CAN errata fix regression?
by Michael Balzer 20 Jul '21

20 Jul '21

Craig, everyone, one of the ESP32CAN errata fixes seems to have caused a regression. I now frequently see this log message: esp32can: TxCallback: fatal error: TX buffer not available Meaning there was a TX buffer free interrupt, but the TX buffer status did not match that. I never saw this message before the errata fixes. Do others see this message? Regards, Michael -- Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal Fon 02333 / 833 5735 * Handy 0176 / 206 989 26

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Historical data download tool
by Michael Balzer 15 Jul '21

15 Jul '21

Users are having issues downloading CSV telemetry data from the openvehicles.com server. On my server, CSV tables can be downloaded directly from the vehicle page. Unfortunately I cannot provide a similar feature for the Drupal module, as I've never used Drupal. As a workaround I have implemented a simple download tool for other servers: https://dexters-web.de/downloadtool The tool uses the HTTP(S) API, and adds known headers automatically. Forum thread: https://www.openvehicles.com/node/2832 FYI: the JSON to CSV step is done using "jq": curl -s -X GET -b $(_tmpdir)/.cookiejar "$(_server2)/api/historical/$(URL:_vehicleid)/$(URL:_type)" \ | jq -r 'map([(.h_timestamp|tostring), (.h_recordnumber|tostring), (.h_data|tostring)] | join(",")) | join("\n")' Regards, Michael -- Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal Fon 02333 / 833 5735 * Handy 0176 / 206 989 26

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Re: [Ovmsdev] Simcom 7000G
by Derek Caudwell 05 Jul '21

05 Jul '21

Hi Mark, The firmware Revision is curently:1529B04SIM7000G It looks like there is at least a B05 version available, not sure if that is the latest version though: https://github.com/Xinyuan-LilyGO/LilyGO-T-SIM7000G/blob/master/docs/How%20… The usb drivers provide separate COM ports for AT commands, NMEA etc so it seems odd that the UART doesn't. Kind regards Derek

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Tesla Powered RAV4 EV support
by Michael Iimura 04 Jul '21

04 Jul '21

I am planning to work on support for the Tesla Powered 2012-2014 Toyota RAV4 EV. I don't see any evidence of earlier work on Github. I have done some preliminary recon and determined that only the main Toyota CAN and Tesla CAN are needed for the desired information. Maybe K-Line for TPMS would be nice since the car won't display pressures, but the Toyota Techstream diagnostic software does. The most valuable information is on the Tesla CAN and should be similar or exactly the same as other Tesla models. I am just starting to gather hardware and software at this moment, but suggestions are welcomed. - Mike

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Re: [Ovmsdev] new member interested in Kia Soul EV preheating
by Henrik Scheel 30 Jun '21

30 Jun '21

> Regarding the 12V-draining that Henrik mentions, waking up the in-car CAN bus systems is needed to read the state of anything when the cars is off, like the door-locks, if I recall correctly. Otherwise OVMS would be completely silent and ?useless? when the car is off. I don?t know if any one has found another way around it. I will repeat the solution I suggested to Geir two and a half years ago (when we discussed the draining aux-battery issue for the old Kia Soul EV car module): Make it user selectable whether the user wants OVMS to - turn on the car regularly when off, to repeatedly read the lock state etc, all through the night; or - not turn on the car regularly, to prevent draining the Aux-battery to 5 Volts. I would suggest this choice for default. The old Kia Soul EV module has a user setting for choosing to reprogram the third FOB key to open the charge door. A new user setting for enabling the car wake-up would make the OVMS module safe to use. I still do not see the value of obtaining data from the car when it is off, and Geir did not want to let me know the reason he finds it valuable, when I asked him. I stopped using OVMS back then, and have worked on the Soul EV Spy android app instead. Best regards, Henrik Scheel

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Testing help requested on Tesla Roadster
by Stephen Casner 29 Jun '21

29 Jun '21

I have created a roadster-wakeup branch from master where I uploaded a fix for the problem that trying to manually start charging using the app was not effective if the car was waiting for a scheduled charge start time and was not awake. If the slider on the charge connector icon was moved to the right to start charging, the app might just move the slider back or might cause the whole charge connector icon to disappear. The solution involves issuing a wakeup command to the car and then tracking the actions the car takes before the point where it is ready to accept the command to start charging while faking the car status as presented to the app to keep it happy. I have tested this on my 2008 (AKA 1.5) Roadster, but I would appreciate corroboration from other Roadster owners, in particular with 2.x Roadsters. -- Steve

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Re: [Ovmsdev] new member interested in Kia Soul EV preheating
by Henrik Scheel 29 Jun '21

29 Jun '21

Hello Kyle. > I'm interested in trying to get some sort of pre-heating going in the Soul. > The story coming to mind: > > - As a driver, I'd like to be able to tell my Soul to start warming itself > up while connected to an EVSE, so that when I leave the house in ~30 > minutes I'll have a warm car and won't have to spend my precious 180km of > range (who are we kidding, 150 in winter) on that. > > It'd be nice to do this in the OVMS Android app somehow, but that's > negotiable. > >> From stalking this forum and Kia SOUL EV forums, people have figured out > lots of things about the Soul but not this yet somehow? Remote pre-heating has been the wet dream for Soul EV tinkerers since 2014, none succeeding by using only the usual CAN-bus, or the other CAN-bus available in the Soul OBD-II connector, to my knowledge. It might not be possible. The best shot I can think of, is to record all CAN activity on all busses, while a certified KIA garage performs a full diagnostic examination of the heating system. And then start digging in the heaps of data. I don’t know if anyone has attempted this already. See discussion: https://www.mykiasoulev.com/forum/viewtopic.php?f=6&t=135 And gathered info on PIDs: https://docs.google.com/spreadsheets/d/1YYlZ-IcTQlz-LzaYkHO-7a4SFM8QYs2BGNX… I am the current maintainer of the Soul EV Spy android app, so I know a little about the Soul EV CAN bus messaging. Feel free to ask, and/or find inspiration in the code avaliable for the old, free version of the app here: https://github.com/langemand/SoulEVSpy I stopped using OVMS in the Soul, because the maintainer of the Soul car module coded it, so that under certain conditions it wakes up the in-car CAN bus systems regularly, leading to an AUX battery drained to 5 Volts, and a car that cannot start (or even unlock). I don’t know if that has been improved since then. I am open to sharing PID and other information, so just write me directly, if you want: soulspy(a)evranger.com Best regards, Henrik -- Venlig hilsen / best regards Henrik Scheel Mobil: +45 2720 9828

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Re: [Ovmsdev] Simcom 7000G
by Derek Caudwell 28 Jun '21

28 Jun '21

It is a bit of a hack using a breakout board for testing purposes. See photo attached. Looks like the unit is consistently crashing when it gets to initiating PPP connection. I'll do some more investigation on it at the weekend. On Mon, 28 Jun 2021, 8:15 pm , <ovmsdev-request(a)lists.openvehicles.com> wrote: > Send OvmsDev mailing list submissions to > ovmsdev(a)lists.openvehicles.com > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.openvehicles.com/mailman/listinfo/ovmsdev > or, via email, send a message with subject or body 'help' to > ovmsdev-request(a)lists.openvehicles.com > > You can reach the person managing the list at > ovmsdev-owner(a)lists.openvehicles.com > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of OvmsDev digest..." > > > Today's Topics: > > 1. New plugin: VW e-Up ECU Library & Toolkit (Michael Balzer) > 2. Re: Simcom 7000G (Mark Webb-Johnson) > 3. new member interested in Kia Soul EV preheating (EV Eh?) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sun, 27 Jun 2021 12:16:08 +0200 > From: Michael Balzer <dexter(a)expeedo.de> > To: ovmsdev(a)lists.openvehicles.com > Subject: [Ovmsdev] New plugin: VW e-Up ECU Library & Toolkit > Message-ID: <c060ae4b-9644-c1c1-3f89-1edb64629864(a)expeedo.de> > Content-Type: text/plain; charset="utf-8"; Format="flowed" > > > https://docs.openvehicles.com/en/latest/plugin/v-vweup/ecutoolkit/README.ht… > > Probably already the largest plugin I've written so far, although it's > only version 0.5 yet? > > Help & feedback is appreciated. > > Regards, > Michael > > -- > Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal > Fon 02333 / 833 5735 * Handy 0176 / 206 989 26 > > >

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