Comparing revisions for RaspberryPiInCarProject

Additions:
- Found box from neighbour's electrical junk
- Boards etc Mounted in box https://goo.gl/photos/557hZXdP5od1e4TA7
- i/o Connected and tested https://goo.gl/photos/EBsePoqLMcXUVTai9
- Ordered RTC and Amp modules
- Decided on circuitry for triggers and overrides https://goo.gl/photos/yKk6YVA8tEDinBCm8
- Obtained additional components, decided on switch types
- Got i/o pins working for hold and ACC active
- Moved GPIO pins as interfered with placing the RTC
Deletions:
Pi Pinouts http://pinout.xyz/
- Found [[https://goo.gl/photos/Vkxzb1F7429FF5YAA|box from neighbour's electrical junk]]
- RPi 1B and Powerboard Board, battery [[https://goo.gl/photos/557hZXdP5od1e4TA7|mounted in the box]]
- Basic i/o [[https://goo.gl/photos/EBsePoqLMcXUVTai9 connected and tested]]
- Ordered a [[https://nicegear.co.nz/raspberry-pi/high-precision-real-time-clock-for-raspberry-pi/|RTC]] and [[https://nicegear.co.nz/electronics-gear/adafruit-i2s-3w-class-d-amplifier-breakout-max98357a/|i2S]] amplifier module
- Decided on [[https://goo.gl/photos/yKk6YVA8tEDinBCm8|circuitry for triggers and overrides]]
- Obtained additional components, found some swiches, diodes etc
- Received RTC and Amp module
- Moved the GPIO pins that were planned as the interfered with placing the RTC
- Put script in /etc/rc.local
- got gpspipe to dump a logfile continually
- got gpspipe to start logging on boot up with /etc/rc.local
- played with a [[http://www.ebay.com/itm/For-Smart-Home-5V-USB-Relay-2-Channel-Programmable-Computer-Control-/190950124351|USB relay]] (Mobius camera switching?)
- wired the box up with switches for ACC and Trigger inputs etc (ref [[https://goo.gl/photos/NFBVQ3dewDmL2xA17|wiring diagram]])
- Got the i2s sound module working
- Installed sox, flite etc and KMWs IVR script, tester IVR
- Looks [[https://goo.gl/photos/2JmdqgAG8XYC6X2s5|like this now]]
At Paul's, 192.168.1.205
=====File system read/write=====
Need a read only fole system os some sort to allow power off at any stage, and improve lifetime of SD car etc in car environment
http://blog.pi3g.com/2014/04/make-raspbian-system-read-only/
http://kurokesu.com/main/2015/12/30/raspberry-pi-setup-for-power-safe-operation/
Set up UnionFS
https://thepihut.com/blogs/raspberry-pi-tutorials/17209332-adding-a-real-time-clock-to-your-raspberry-pi
i2c device so when plugged in - run this to see if it is there
sudo i2cdetect -y 1
set up ntp to set the RTC (I did that with network and GPS time)
Run ##sudo hwclock -w## to write the system time to the RTC board.
then will need to add the RTC kernel module to the file /etc/modules so it is loaded when the Pi boots.
##sudo nano /etc/modules##
add rtc-ds1307 at the end
=====USB Relay=====
Used one of these with a USBA cable
http://www.ebay.com/itm/For-Smart-Home-5V-USB-Relay-2-Channel-Programmable-Computer-Control-/190950124351
No HID drivers in raspberry pi so need to build them
https://www.raspberrypi.org/forums/viewtopic.php?f=29&t=77538
http://matthewcmcmillan.blogspot.co.nz/2013/03/compiling-libhid-for-raspbian-linux-on.html
http://www.signal11.us/oss/hidapi/
##If you've installed your own libraries in /usr/local/lib have you run sudo ldconfig after doing that.##
sudo ./usbrelay 2>/dev/null
OUGOH_1=1
OUGOH_2=1
$ sudo ./usbrelay PSUIS_2=0
$ sudo ./usbrelay PSUIS_2=1 PSUIS_1=0
$ sudo ./usbrelay PSUIS_2=0 PSUIS_1=1 0U70M_1=0 0U70M_2=1
Maybe need this?
https://support.hifiberry.com/hc/en-us/articles/205377202-Adding-software-volume-control
Getting a json of the current street location
http://stackoverflow.com/questions/6582479/finding-nearest-street-given-a-lat-long-location
http://maps.googleapis.com/maps/api/geocode/json?latlng=-36.91537505,174.927379794&sensor=true_or_false
=====Other Useful Scripts & Links=====
Maybe a check for wifi and restarting if needed
https://paste.k3a.me/view/449a6f1c
reverse ssh and other useful stuff
http://k3a.me/how-to-make-raspberrypi-truly-read-only-reliable-and-trouble-free/
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