Archive for November 1st, 2015
I wanted to put up my roll-up J-pole indoors temporarily, and I didn’t want to drill holes to do it. (Also, I was feeling lazy).
I used a plastic hangar, zip ties, and cable mounts to put it up. It took less than 5 minutes and it works quite well.
This approach could be used for any temporary installation of a light antenna that could be hung, such as a roll-up j-pole, horizontal dipole, or anything of the sort.
The Raspberry Pi has two LEDs on the front: One hardwired as a power indicator, and the other is (by default) an SD card activity indicator. This second LED can be changed via software to anything (even a GPIO), but for this, I’m going to show you how to set it as a heartbeat indicator.
sudo su modprobe ledtrig_heartbeat echo heartbeat > /sys/class/leds/led0/trigger
The Pi’s led should now start blinking as a heartbeat indicator. If you want to restore the default behavior, you can do so:
echo mmc0 > /sys/class/leds/led0/trigger
That’s all there is to it.
After getting a Raspberry Pi (or Pi 2), here are the first steps you should take:
login with username pi, password raspberry.
Configure the Pi:
- Advanced options
- A0 Update this tool
- Expand filesystem
- Change user password
- Internationalization options:
- Change locale: Add your locale (Removing the default en_GB.UTF-8 caused display issues on mine, so just add your locale.)
- Change Timezone
Next, update the Pi:
sudo apt-get update
sudo apt-get upgrade
Last, update the firmware: