On powering/reset of the Raspberry Pi connected to a relay board, the state of the relays needs to be defined or they just sit in limbo until their first use, this might be fine in some application but not others..
For my Raspberry Pi aquarium system, the ‘original‘ Web UI does have a script on loading the webpage to define the pin modes but if there is a power cut and the RPi is restarted, we need these values set and activated when the RPi boots in case nobody loads the piTank webpage directly after a reboot – thus critical components wont be turned on.
The fix to this issue is gpiobootscript.sh
Continue reading Raspberry Pi GPIO Start-up Script
So after some playing around I am going for a Windows Metro style web interface for the Raspberry Pi powered aquarium controller. At the moment the interface can be used to view the current time and date of the system, display 2 different external temperature readings and control the 8 way 10 amp 240v relay which the filter, heater, lights and alike connect to.
Continue reading Raspberry Pi Aquarium Controller WebUI
What is HERO LeJog?
“The 6th December 2014 will see the start of the 20th edition of the Land’s End to John O’Groats Classic Reliability Trial & Tour, the toughest event of its kind in Europe and possibly the world. Known to everyone as Le Jog (it even featured on a TV quiz show – “what event runs under the acronym Le Jog”), this Iconic event continues to attract crews from across the world and has become a “must do” on the wish list of all classic car enthusiasts.
Continue reading Team90 goes on HERO Lejog 2014