improve customization docs in user guide

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Ross McKelvie 2020-07-08 21:45:56 -05:00
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# aprs-pigate
Prebuilt Raspberry Pi image for running a HAM radio APRS Internet Gateway using [direwolf] and [rtl-sdr]
## Usage
## Getting Started
### Installation
1. Download & Flash the image to an SD card
2. Insert SD card into a computer and load your wpa_supplicant.conf into boot if you are using wifi, and drop in a [pigate.conf](files/boot/pigate.conf) with your Callsign and password. You can use any custom direwolf config file here, enabling many different hardware configurations!
3. Insert into a raspberry pi with RTL-SDR plugged into USB, and power up! If everything was configured correctly, in about 5 minutes you should see it pop up on [aprs.fi].
Once the pi is running, it should be available on your network with hostname `aprs-pigate` and accessible via SSH `pi@aprs-pigate` using the default raspberry password. It is a good idea to change this once logged in, or disable passwords altogether and use SSH keys, which you can do by modifying the `user-data` file accessible on the boot partition after flashing.
### Viewing Dire Wolf Output
The startup script creates a `screen` and executes the startup script [`rtl-dw-start.sh`]. If at any time you want to explore the logs, you can ssh into your pigate and run the command `screen -r direwolf`. CTRL+C to leave the screen.
Logs are also written to `/home/pi/aprslogs/aprs.log`. You can view these with commands like `less` or `tail`, and generally may be easier to work with than the direwolf screen.
### Customizing the Start Script
If you are setting up a digipeater, you can disable the Software Defined Radio by creating an empty file `DISABLE_SDR` and placing it into the boot folder of your SD card along with `pigate.conf`. See the [`rtl-dw-start.sh`] startup script for more details.
@ -27,4 +31,4 @@ Run `make build` to start building your first image.
[`flash`]: https://github.com/hypriot/flash
[`packer-build-arm-image`]: https://github.com/solo-io/packer-builder-arm-image/
[rtl-sdr]: https://www.rtl-sdr.com/
[`rtl-dw-sart.sh`]: files/home/pi/rtl-dw-start.sh
[`rtl-dw-start.sh`]: files/home/pi/rtl-dw-start.sh