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Pine64 Head Unit
#81
(10-09-2016, 12:56 PM)Traveler Wrote:
(10-06-2016, 02:50 AM)mbt28 Wrote: Hi,

Actually I couldnt get what do you mean exactly? What is this 12V line? Is it a bidirectional 12V level serial line? If it is, it is quite easy to implement is with couple of diodes or small ICs.

Wow had to figure out why the quote function didn't work like other forums.
No it is not a bi-directional serial line. It is a logic line that is at a 12 volt level but due to being an automotive application you have to becareful of voltage spikes well above 20 volts.

I have located some I2C boards with either N Channel Mosfet outputs to drive the existing 12 volt relays. Also found some I2C shield with opto-isolated inputs rated 3-30 volts that I can use to wire the existing switches to.

Here are the Output boards I found.
https://www.ereshop.com/shop/index.php?m...729df3a46c

These are the input boards.
https://www.ereshop.com/shop/index.php?m...729df3a46c

I have to do some dimension checking to make sure the output boards will fit into the waterproof relay box and the input boards will fit in behind the mounted switches.

Hi,

Actually, I think it is ignition line sometimes called 12V ACC. Maybe you can just place current limiting resistor and connect it to optoisolator or to a transistor. This way you can bay pass the direct connection to that line.

In anyway we have to find a way to keep high one pin from boot to have safe boot&power management.


Messages In This Thread
Pine64 Head Unit - by Zoidiano0 - 02-15-2016, 02:26 PM
RE: Pine64 Head Unit - by inzinjer - 02-15-2016, 03:54 PM
RE: Pine64 Head Unit - by Zoidiano0 - 02-15-2016, 04:26 PM
RE: Pine64 Head Unit - by pine.tree - 02-16-2016, 11:50 AM
RE: Pine64 Head Unit - by Zoidiano0 - 02-16-2016, 04:50 PM
RE: Pine64 Head Unit - by pine.tree - 02-16-2016, 06:54 PM
RE: Pine64 Head Unit - by CanadianIceTech - 02-17-2016, 08:23 PM
RE: Pine64 Head Unit - by dulasu - 02-17-2016, 10:26 PM
RE: Pine64 Head Unit - by Zoidiano0 - 02-18-2016, 05:51 AM
RE: Pine64 Head Unit - by dulasu - 02-18-2016, 12:32 PM
RE: Pine64 Head Unit - by TonyH - 02-18-2016, 08:25 PM
RE: Pine64 Head Unit - by Zoidiano0 - 02-18-2016, 10:12 PM
RE: Pine64 Head Unit - by dulasu - 02-18-2016, 11:34 PM
RE: Pine64 Head Unit - by Zoidiano0 - 02-20-2016, 05:18 PM
RE: Pine64 Head Unit - by npull - 03-03-2016, 09:43 AM
RE: Pine64 Head Unit - by Zoidiano0 - 03-03-2016, 08:35 PM
RE: Pine64 Head Unit - by npull - 03-04-2016, 02:46 AM
RE: Pine64 Head Unit - by Zoidiano0 - 03-04-2016, 04:40 AM
RE: Pine64 Head Unit - by npull - 03-04-2016, 07:02 AM
RE: Pine64 Head Unit - by Zoidiano0 - 03-04-2016, 07:59 AM
RE: Pine64 Head Unit - by pine.tree - 03-10-2016, 10:23 AM
RE: Pine64 Head Unit - by Zoidiano0 - 03-10-2016, 04:46 PM
RE: Pine64 Head Unit - by npull - 04-01-2016, 03:54 AM
RE: Pine64 Head Unit - by inzinjer - 03-18-2016, 07:59 AM
RE: Pine64 Head Unit - by npull - 03-18-2016, 10:52 AM
RE: Pine64 Head Unit - by Zoidiano0 - 03-20-2016, 12:52 PM
RE: Pine64 Head Unit - by Zoidiano0 - 03-28-2016, 02:28 PM
RE: Pine64 Head Unit - by burbs - 03-29-2016, 07:14 AM
RE: Pine64 Head Unit - by lejaybo - 03-30-2016, 12:44 PM
RE: Pine64 Head Unit - by Zoidiano0 - 04-01-2016, 05:02 PM
RE: Pine64 Head Unit - by pine.adam - 04-04-2016, 03:27 PM
RE: Pine64 Head Unit - by BeauS - 04-05-2016, 10:44 PM
RE: Pine64 Head Unit - by Zoidiano0 - 04-06-2016, 06:23 AM
RE: Pine64 Head Unit - by BeauS - 04-08-2016, 10:14 PM
RE: Pine64 Head Unit - by Zoidiano0 - 04-09-2016, 05:38 AM
RE: Pine64 Head Unit - by pine.adam - 04-15-2016, 08:22 AM
RE: Pine64 Head Unit - by queonda - 04-26-2016, 05:43 PM
RE: Pine64 Head Unit - by pineman64 - 04-26-2016, 07:07 PM
RE: Pine64 Head Unit - by queonda - 04-27-2016, 10:04 AM
Pine64 Head Unit - by Zoidiano0 - 05-04-2016, 06:51 PM
RE: Pine64 Head Unit - by Zoidiano0 - 05-09-2016, 03:48 PM
RE: Pine64 Head Unit - by files_copying - 05-26-2016, 06:50 AM
RE: Pine64 Head Unit - by ipsw - 06-06-2016, 06:05 PM
RE: Pine64 Head Unit - by Rob - 05-27-2016, 11:44 PM
RE: Pine64 Head Unit - by Zoidiano0 - 06-02-2016, 05:15 PM
RE: Pine64 Head Unit - by Zoidiano0 - 06-13-2016, 06:52 PM
RE: Pine64 Head Unit - by mesaxi - 06-29-2016, 01:28 AM
RE: Pine64 Head Unit - by files_copying - 07-02-2016, 08:57 AM
RE: Pine64 Head Unit - by Zoidiano0 - 07-04-2016, 07:19 PM
RE: Pine64 Head Unit - by Banichi - 07-08-2016, 06:47 PM
RE: Pine64 Head Unit - by CanadianIceTech - 07-17-2016, 06:32 PM
RE: Pine64 Head Unit - by klausr - 07-26-2016, 05:33 AM
RE: Pine64 Head Unit - by Banichi - 07-18-2016, 09:00 AM
RE: Pine64 Head Unit - by Zoidiano0 - 07-18-2016, 10:56 AM
RE: Pine64 Head Unit - by CanadianIceTech - 07-19-2016, 10:16 AM
RE: Pine64 Head Unit - by jodybrown99 - 07-19-2016, 03:01 PM
RE: Pine64 Head Unit - by Zoidiano0 - 07-25-2016, 05:29 PM
RE: Pine64 Head Unit - by ipsw - 08-05-2016, 09:21 AM
RE: Pine64 Head Unit - by Zoidiano0 - 08-06-2016, 08:25 AM
RE: Pine64 Head Unit - by Traveler - 08-06-2016, 09:07 AM
RE: Pine64 Head Unit - by Zoidiano0 - 08-10-2016, 08:00 PM
RE: Pine64 Head Unit - by ipsw - 08-11-2016, 01:29 PM
RE: Pine64 Head Unit - by Zoidiano0 - 08-11-2016, 05:34 PM
RE: Pine64 Head Unit - by ipsw - 08-11-2016, 09:08 PM
RE: Pine64 Head Unit - by Traveler - 08-11-2016, 10:30 PM
RE: Pine64 Head Unit - by ipsw - 08-22-2016, 10:55 AM
RE: Pine64 Head Unit - by Traveler - 08-22-2016, 12:46 PM
RE: Pine64 Head Unit - by Banichi - 08-22-2016, 08:18 PM
RE: Pine64 Head Unit - by ipsw - 08-23-2016, 01:38 PM
Pine64 Head Unit - by SkimMilk - 08-23-2016, 03:31 AM
RE: Pine64 Head Unit - by cesar - 09-06-2016, 04:26 AM
RE: Pine64 Head Unit - by Zoidiano0 - 09-06-2016, 05:57 AM
RE: Pine64 Head Unit - by garry_t - 09-14-2016, 03:09 PM
RE: Pine64 Head Unit - by Zoidiano0 - 09-14-2016, 03:46 PM
RE: Pine64 Head Unit - by mbt28 - 10-05-2016, 09:30 AM
RE: Pine64 Head Unit - by Traveler - 10-05-2016, 10:54 AM
RE: Pine64 Head Unit - by mbt28 - 10-06-2016, 02:50 AM
RE: Pine64 Head Unit - by Zoidiano0 - 10-09-2016, 12:27 PM
RE: Pine64 Head Unit - by Traveler - 10-09-2016, 12:56 PM
RE: Pine64 Head Unit - by mbt28 - 10-09-2016, 02:37 PM
Pine64 Head Unit - by reaper7 - 10-09-2016, 01:08 PM
RE: Pine64 Head Unit - by npull - 01-10-2017, 02:18 PM
RE: Pine64 Head Unit - by tllim - 01-10-2017, 08:50 PM
RE: Pine64 Head Unit - by npull - 01-11-2017, 03:03 AM
RE: Pine64 Head Unit - by tllim - 01-16-2017, 04:35 PM
RE: Pine64 Head Unit - by mbt28 - 01-27-2017, 05:49 AM
RE: Pine64 Head Unit - by Math43 - 02-20-2017, 06:48 AM
RE: Pine64 Head Unit - by clamum - 02-27-2017, 02:34 PM
RE: Pine64 Head Unit - by Traveler - 02-27-2017, 02:45 PM
RE: Pine64 Head Unit - by dkryder - 02-27-2017, 03:22 PM
RE: Pine64 Head Unit - by dikov - 03-03-2017, 01:37 PM
RE: Pine64 Head Unit - by dikov - 03-07-2017, 08:07 PM
RE: Pine64 Head Unit - by pfeerick - 03-07-2017, 09:09 PM
RE: Pine64 Head Unit - by dikov - 03-08-2017, 10:20 AM
RE: Pine64 Head Unit - by ronaldolcc - 03-28-2017, 07:28 AM
RE: Pine64 Head Unit - by dikov - 03-28-2017, 09:30 AM
RE: Pine64 Head Unit - by mbt28 - 06-12-2017, 08:16 AM
RE: Pine64 Head Unit - by dikov - 06-12-2017, 09:19 AM
RE: Pine64 Head Unit - by amir.movafagh - 01-30-2018, 03:00 AM
RE: Pine64 Head Unit - by Nilda - 04-08-2019, 03:55 AM
RE: Pine64 Head Unit - by rogatip79 - 11-19-2019, 04:35 AM

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