[Ovmsdev] Moving to a production cycle

Mark Webb-Johnson mark at webb-johnson.net
Sat Mar 3 17:27:51 HKT 2018

They’ll do pretty much whatever we ask them to do.

To try to formalise this, so everyone can see, I’ve created a production/qc/production_notes.txt file with the production notes that will be given to the China side. This should document all the production and QC steps they should do.

What I have at the moment is:


1] DB9 CAN Bus QC tool

   DB9 Female with:
    * Pins 2, 4, and 6 connected (all CAN-L signals)
    * Pins 5, 7, and 8 connected (all CAN-H signals)
    * R120 between pins 2 and 5
    * External 12V power connector
      * GND on pin 3
      * +12V on pin 9


1] Default wifi AP and module passwords

   OVMS> config set wifi.ap OVMS <serialnumber>
   OVMS> config set password module <serialnumber>

   Where <serialnumber> is the serial number from the label on the enclosure.

I think that should set both the module default and auto wifi AP passwords to the serial number of the module. That will be on a label on the underside of the module.

You are correct: this is a connected car, with possibly disastrous consequences should somebody malicious gain access. Best to err on the side of caution.

Regards, Mark.

> On 3 Mar 2018, at 4:07 AM, Michael Balzer <dexter at expeedo.de> wrote:
> Mark,
> Am 26.02.2018 um 07:28 schrieb Mark Webb-Johnson:
>> I’ve asked the China side. Specifically:
>> Can you print serial number stickers for these modules? I can provide design - and we can print a large batch.
>> Then, during manufacturing, have one step to enter serial number as password into module, like:
>> Flash
>> Connect terminal
>> QC checks
>> New step to type: config set wifi.ap OVMS <serialnumber>
> Just to double check: so we won't set the module password, only the AP pass phrase?
> Has setting the module password any drawbacks?
> I'm asking because I assume the SMS channel -as soon as implemented- will also provide command access, which would be open by default as well without a module password.
> Setting the module password would secure the webserver as well.
> Regards,
> Michael
> -- 
> Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
> Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
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