Hi, i have been following this tutorial : http://www.instructables.com/id/Guitar-Hero-Arduino-Bot/?ALLSTEPS
It is to create a guitar hero bot.
I have been looking everywhere for a solid state relay to connect the com and colour pins of the guitar hero controller together or find an alternative.
I cant find one anywhere. I was hoping that someone here would be able to assist me in designing a basic circuit for this.
Or I would be happy if someone could provide a link to where i can buy a ready built solid state relay shield for dc.
the reason I will not use the site it provides to purchase items from is because it has so many bad reviews of items not arriving.
I am from the uk and would prefer to buy from uk stock for faster delivery
What voltage are you dealing with? A small FET would probably do the job just fine. Maybe even a small transistor. You aren't switching much current, just a voltage.
Thanks for your response, i am grateful someone is helping me.
um I cant quite remember the voltage is pretty low like under 1v. it just basically I need to be able to join 2 wires together quickly when I send an arduino output to it.
thanks again
Trounce1:
Thanks for your response, i am grateful someone is helping me.
um I cant quite remember the voltage is pretty low like under 1v. it just basically I need to be able to join 2 wires together quickly when I send an arduino output to it.
thanks again
That is exactly what a transistor does. For 1V, BJTs (such as NPN) aren't adequate, because they have a [relatively] very high voltage drop. However a FET can do that job perfectly.
By the little I know about FETs, I believe that your choice of a P-Channel or N-channel MOSFET will depend on wether your ARduino signal will be active high or active low.
An N-channel MOSFET begins to turn on when the gate voltage is raised above the source voltage (with current flow from positive drain to source). As this voltage, VGS, approaches the full-on level defined by VGS(on), the resistance between the drain and source drops to the minimum on-resistance defined by RDS(on).
A P-channel MOSFET turns on as the gate voltage is pulled below the source voltage (with current flow from positive source to drain, backwards from the N-channel device). The same changing control signal, when applied to both a P-channel and N-channel MOSFET, will have the effect of transferring conductance from one device to the other.