On powering/reset of the Raspberry Pi connected to a relay board, the state of the relays needs to be defined and set.
Depending on your project it might not matter what state the relays are when the RPi is turned ON but for the
piTank it is critical! (battery backup to come… but still this solution is needed)
The ‘original‘ WebUI 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 – thus not setting the pin modes or turning the heater/filter 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 piTank 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
- Fluval Roma 120 Tank and cabinet -eBay – used
- MarsAqua 300w dimmable full spectrum LED light – eBay – new – Review to come
- DIY water fill system – Wickes – build steps to come
- AquaManta EFX 200 External Filter – Maidenhead Aquatics – Review to come
- Water proof enclosure for mains power – ToolStation
The idea is to reinforce the cabinet that came with the tank and make the center panel removable. To create a water fill system so there is no need to be gluging water into the tank or putting a bucket on a shelf for a gravity fed system and finally, a tidy place for the external filter and all the power/wiring that the tank will be using.
Continue reading Aquarium hardware build / layout
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