<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">It is hard to modify the main board, without voiding the certifications we have (and going through the expense of re-certifying).<div class=""><br class=""></div><div class="">Simplest would be to implement this on an expansion board. Perhaps extend the K-line board we have to do other functions (12v switched status, relay control, etc)?</div><div class=""><br class=""></div><div class="">The DB9 is full (all 9 pins assigned), so this would have to be via DA26.</div><div class=""><br class=""></div><div class="">We have been using the EGPIO lines for system use, starting at #0 and working upwards:</div><div class=""><br class=""></div><div class=""><ul class="MailOutline"><li class="">#0 MDM_EN (modem enable)</li><li class="">#1 SW_CTL (external 12v control)</li><li class="">#2 CAN1_EN (can#1 enable)</li><li class="">#3 MDM_DTR (modem DTR)</li></ul></div><div class=""><br class=""></div><div class="">Then expansion boards should start at #9 and work downwards:</div><div class=""><br class=""></div><div class=""><ul class="MailOutline"><li class="">#9 K-line enable (on k-line expansion board)</li></ul></div><div class=""><br class=""><div>I guess we need just a simple voltage divider, and pull down, to determine on/off state of switched 12v?</div><div><br class=""></div><div>Regards, Mark.</div><div><br class=""></div><div>P.S. <span style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);" class="">I have been hoping that Espressif would release a successor to the ESP32 with more RAM and GPIO pins, but it looks like the prefer to go lower performance/spec, rather than up.</span></div><div><font color="#000000" class=""><span style="caret-color: rgb(0, 0, 0);" class=""><br class=""></span></font><blockquote type="cite" class=""><div class="">On 2 Aug 2020, at 5:47 PM, Michael Balzer <<a href="mailto:dexter@expeedo.de" class="">dexter@expeedo.de</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="">Mark,<br class=""><br class="">I remember the current Leaf also has the issue of the OBD port being<br class="">filtered by a gateway to only support polling.<br class=""><br class="">I think we should generally add a +12V ignition signal detection to the<br class="">next OVMS hardware revision, i.e. without the need to add extra hardware.<br class=""><br class="">There is no standard for the ignition / switched +12V being available at<br class="">the OBD port, but I think most cars will have that. If a car doesn't, it<br class="">should still be easy to get from around the OBD port (e.g. fuses).<br class=""><br class="">Regards,<br class="">Michael<br class=""><br class=""><br class="">Am 02.08.20 um 11:03 schrieb Soko:<br class=""><blockquote type="cite" class="">Meaning: We need a special VW-cable (like for the NIssan or Kia Soul)<br class="">with OBD Pin1 gets into a pin on the DB9 connector and into a<br class="">Digital-In-Pin on the OVMS. A voltage divider is needed as well as<br class="">+12V on OBD-Pin1 signals "ignition on".<br class=""></blockquote><br class="">-- <br class="">Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal<br class="">Fon 02333 / 833 5735 * Handy 0176 / 206 989 26<br class=""><br class=""><br class="">_______________________________________________<br class="">OvmsDev mailing list<br class=""><a href="mailto:OvmsDev@lists.openvehicles.com" class="">OvmsDev@lists.openvehicles.com</a><br class="">http://lists.openvehicles.com/mailman/listinfo/ovmsdev<br class=""></div></div></blockquote></div><br class=""></div></body></html>