ctrlsave.com

power inverter for ac current

12v dc rechargeable battery

testing the ac-inverter-dc supply system

I got this solevoid valve in the kaichin 2nd hand shop in sim lim. Probably the best water flow control solution i can find. This solenoid opens up its gate when a 220v power supply passes through it, otherwise it keeps all water behind its gate.

Initial test with water pump. This cheap water pump costs about 9 dollars, good price but it wasn’t powerful enough.

I made some research online about gps receiver modules and found some really good tutorials and resources about the parallax gps module , to top it up , it has got compass capabilities which i can use for my audio feedbacks.

The arduino tutorial can be found here, http://www.arduino.cc/playground/Tutorials/GPS . There is also a very good section about this component in tom igoe’s “making things talk” where it is used in a few small mini projects.

I ended up buying it from a local company with a “nice” price tag and true enough, it is fairly easy to wire and to make it work on a basic level.