Asked
— Edited
Hello everyone!
I just got my first shipment of parts from china which included:
8x relays
and
1x 5amp adjusting power adapter(Audiowind).
Just waiting for some regulators, and I should be good to finish some robots!
A question:
Relay wiring?
Relay:
How do I wire this up?
Thanks,
Tech
www.ebay.ca/itm/5V-One-1-Channel-Relay-Module-Board-Shield-For-PIC-AVR-DSP-ARM-MCU-Arduino-K0TT-/201203063866?pt=LH_DefaultDomain_0&hash=item2ed8a31c3a
DATASHEET:
songle relay
It looks like, as Richard said, you can drive it direct from the EZ-B (as per my first reply) however check to make sure it does have the driving transistor and diode otherwise there is a risk of damaging the board, the EZ-B and the battery.
If in doubt, add a driver circuit. This would be the TIP122 circuit with the optional diode.
Or if you are feeling brave and want to risk the warranty on the EZ-B you could just try it and see what happens however I don't recommend that option personally
that are 2n2222 transistors.
2n2222
Will these work?
*Added picture of pin layout*
Robotdoc, are you saying that my relay is fine by itself? Or is that just for what you have linked?
Most of the examples online use a 1N4001 or it's higher voltage cousin the 1N4007. Forward voltage doesn't really matter in this case as the diode is just being used in a flyback configuration which means that it is dissipating the energy left in the coil once the transistor stops conducting, efficient forward voltage doesn't really matter in this case.
Here's a schematic for interfacing directly to a relay from the ez-b:
While I am pretty sure that 3.3VDC will work with a 5V relay, if it doesn't then use 5V instead of 3.3V and increase the resistor to a 2.2kohm