2017 Feb 24: a new image and update to speed up GPS time sync.
2017 Feb 23: Finally, an RPi2 sensorgnome image. This one supports the adafruit GPS hat
with PPS. Please report problems by filing an issue on github here.
All other Raspberry Pi sensorgnome images, updates, and installation instructions are now
considered obsolete.
RPi model 3: This version boots and does signal processing, but the adafruit GPS hat does not work.
The compressed image is here.
This image needs to be decompressed using 7zip and then written to a 4GB micro SD card using e.g. Win32DiskImager
If you're writing an image to an SD card you've used before, it's safest to first format it using one of the tools from here.
Reformatting an SG micro SD card using the native OS X or Windows disk utility is not recommended; their handling
of multi-partition SD cards is sometimes flaky.
To use a larger card (up to 32 GB):
- burn the 3.8 GB image to your card
- boot the RPi with that card
- ssh into the RPI using ssh pi@sgpi.local (password is raspberry)
- become root by doing
sudo su
- create a new partition on the disk using these commands:
cfdisk /dev/mmcblk0
use down-arrow to select the last, larger "Free Space" entry
new
(default partition size)
primary
type
(choose type c - W95 FAT32 LBA; you might need to page up / down to see it)
write
quit
- force the kernel to recognize the newly-created partition
partprobe /dev/mmcblk0
- create a VFAT filesystem on the new partition
mkfs -t vfat /dev/mmcblk0p3
- create a mount point for the new partition; use a name alphabetically before "internal_SD_card"
to have the new partition used before the linux partition; this is recommended
mkdir /media/bigspace
- add an entry to the mount table so the partition will be mounted after a reboot
echo '/dev/mmcblk0p3 /media/bigspace vfat defaults,relatime,user,gid=100,umask=002,utf8,flush 0 2' >> /etc/fstab
reboot
2016 Dec. 7: The current SG software for the Pi 2 does not support a 64 GB micro SD card.
Please use a 32 GB card or smaller.
The Raspberry Pi model 2 is an alternate platform for the SensorGnome. Here it
is in a simple plastic case, with the Adafruit GPS hat installed:
Raspberry Pi-2 B Features:
- 4 built-in USB ports; up to 3 funcubedongle receivers + 1 USB GPS
- PPS GPS "hat" available , which frees a USB port and permits use of 4 funcubedongles
- hot-plugging of USB and ethernet ports works !
- no built-in memory; SD card is used for both operating system and data storage
- micro USB port is for power only; you must use an ethernet cable to see the web
interface or to download data
Raspberry Pi Zero Features:
- small footprint and lightweight; suitable for hand-held or drone use
- older Pi processor
- adapter plug to provide a USB cable
- no ethernet?
Earlier Raspberry Pi
We don't recommend using any earlier models of the Raspberry Pi, due to flaky support for powering devices
via the USB ports.
Software Releases (Obsolete)
2016 May 2 - the installation procedure has been thoroughly tested and simplified.
2016 April 11 - an initial version of the SG software is available for the RPi-2 (model B) platform.
Please see the readme.txt here. This configuration has received no field testing, and while I'm
happy to help fix issues, USE IT AT YOUR OWN RISK.
Platform-specific changes
Hostname
SG software will generate a hostname of this form:
SG-0c34RPi2696d-B827EB34696D
XXXX XXXX MMMMMMMMMMMM
This is to be consistent with sensorgnome hostnames for the beaglebone platform.
The 8-digit XXXXXXXX is the CPU serial number from cat /proc/cpuinfo
and the 12-digit MMMMMMMMMMMM is the MAC address for eth0, as reported by ifconfig.
FIXME: For the raspberry pi zero, change RPi2 to RPiZ in the above, and check
whether there is an ethernet MAC address.
