I bought this ( https://www.amazon.co.uk/MAKEASY-Channe ... 16+channel ) relay board. I want to attach 5 electromagnets to it and 5 buttons. I know that I need to attach diodes to the magnets so the current surge doesn't damage the pi. The question is: Do I need to attach diodes to the buttons as well or is the relay board enough to protect the pi?
Thanks
-
Burngate
- Posts: 6313
- Joined: Thu Sep 29, 2011 4:34 pm
- Location: Berkshire UK Tralfamadore
- Contact: Website
Re: Using 16 channel reply
That is a bit too vague.
What do you want to achieve with the buttons?
When you push a button, what do you want to happen?
I think your best course of action would be to first draw a diagram of what you want to do, and how you think it should all be connected together.
What do you want to achieve with the buttons?
When you push a button, what do you want to happen?
I think your best course of action would be to first draw a diagram of what you want to do, and how you think it should all be connected together.
Re: Using 16 channel reply
Well first off that relay board may not even work with the pi gpio without some interfacing circuits.
The relay board needs 12V DC to power it , and it uses a low signal input to active the relays, if it follows the standard design the 3.3V of the gpio will not be able to switch the relays off, connecting this to the pi gpio to this relay board may actually damage your pi.
The relay board needs 12V DC to power it , and it uses a low signal input to active the relays, if it follows the standard design the 3.3V of the gpio will not be able to switch the relays off, connecting this to the pi gpio to this relay board may actually damage your pi.
We want information… information… information........................no information no help
The use of crystal balls & mind reading are not supported
The use of crystal balls & mind reading are not supported