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4-8ch relay board ?

Hi,

Anyone know of a good relay board, that can be interfaced from a mcu using either 1digital output (20ma max, or if need be I can include the transistor) per relay, or simple serial comm at low baud rate.

Should run and trigger at 5VDC. Needs 4-8outputs each capable of 230Vac 5amp Preferably with a case included.

The board should include rectifiers, transistors, and other components to make it work from a 5VDC source with 20ma triggers, or a serial protocol.

I would prefer a EU store, but any ideas is welcome.

/Jan

Reply to
Jan Nielsen
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Elektuur, mei 2003

petrus bitbyter

Reply to
petrus bitbyter

if you're going through all that bother, how about a PLC brick that has all of that already ? Maybe a PLC can't be used, who knows.

--
"I\'m never wrong, once i thought i was, but was mistaken"
Real Programmers Do things like this.
http://webpages.charter.net/jamie_5
Reply to
Jamie

Jamie skrev:

Maybe it can, I havent used PLC before. I want to make a networked relay box, so I can start, stop, cycle the relays remotely.

I know such products already exists, I just want to make one myself, partly for the price, and partly to learn.

/Jan

Reply to
Jan Nielsen

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Reply to
Si Ballenger

Si Ballenger skrev:

That 1601 is pretty damm close, I only need to convert the 8inputs to a parallel header, and find a box for it.

I will wait and see if theres other surgestions, otherwise it looks like a winner :)

Thanks, Jan

Reply to
Jan Nielsen

If you want to climb up the learning curve, how about

- a PIC16F877 (partly because I've used one and managed to make it work so it must be reasonably easy) to take in an RS232 signal (could email you some code if need be)

- or an FTDI245 usb-to-fifo device,

-- driving into a buffer (74hct540, with leds see what's supposed to be happening))

--- controlling some chunky power rated relays All points monitorable, upgradeable, make the serial link as simple or complex as you like ... hth Neil

Reply to
Neil

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