I am building a kinetic sculpture, where the 4 different sides of a column are covered with smart glass film, top and bottom part won't be used.
The smart glass is a special material which has two states (opaque when not active and transparent when current is applied); it should be controlled by an Arduino and with a series of relay; each one of the films comes with two pads, one for the positive and the other for the negative pole, each one measures 9x50cm.
As all parts came without a specification regarding a circuit that could be built to control them I thought about posting it on the forum.
Power to each of the panels will be supplied via a transformer with the following specifications, I assume the panles will have to be connected in parallel:
The transformer is 200VA Isolating Transformer, (230>110v) Thermal Fuse self resettable (see attached img, with an output cable to be connected to the panels and an input to be connected to mains).
Questions I need to answer:
- Am I correct in thinking that I should connect all 4 panels in parallel?
- In order for me to be able to switch each individual panel at time, I need to connect the relays to the Arduino.
Should I buy a shield that comes with 4 relays already? I was thinking about using this one for instance, but it says that it cannot switch more than 35v DC per channel, am I missing something? http://proto-pic.co.uk/4-channel-relay-shield-for-arduino/
- I have realised other projects with Arduino and motors etc but as this would be my first time playing around with big voltage, as I was wondering if wouldn't be a good idea that of buying a powerswitch tail (http://www.powerswitchtail.com/Pages/PSTIIU.aspx
) but then I would I be able to control each one of the 4 panels?
One last thing, I am based in the UK.
Thank you very much in advance for all your help