Hello all,
This is my first post & boy do I know next to nothing.
I have questions regarding relay board kits & reset circuits for limit switches connection.

The first link is to a Kits-R-Us kit # K142, a 12 chnl IR relay board. This kit has no connections for limit switches, to reset the relays while in latched mode. (Gee I have learned stuff from reading). This kit offers only two groups of relays with each group selectable as either momentary or latched. No on-board screw terminals to connect limit switches onto, so I am assuming it is not possible to attach them for reset purposes ?

http://www.electronickits.com/kit/complete/elec/ck1615.htm

This next kit (I believe it's a Kits_R_Us product as well, #K180 v3). It's a RF rmt ctl 4 chnl relay board having both individual relay momentary / latching selection via jumpers & individual reset circuitry on board via screw terminals. Man I wish the 12 chnl IR kit above had these abilities ?

http://www.electronickits.com/remote_control/rf4.htm

Guess my question is; Is it possible to adapt (hack?) the K142 with reset wiring simply to allow it to respond to limit switch triggering on each channel as needed ?

Excuse me for rambling on so, hope I posted this to the correct portion of the forum?

John

 

Hi John,
You posted just fine Welcome to the forums

Looking at the datasheet for the first device, it has an Atmel microcontroller running who knows what kind of program - basically, it's decoding the input from the remote, but even if you added an interrupt circuit with a limit switch, the Atmel will still have a live voltage on the relay. Seems like it would take a new board layout to give you the freedom to intercept that - or lots of nasty trace-cutting and the like.

I don't see it as impossible, only problematic.

 

Thanks Sgt for the quick rely.

I suspected that would be the answer. Then the K180v3 would be the choice, guess I could use two of them & combine the two remotes...

Kits-R-Us makes a ten relay version, K181. But it lacks the reset feature & and the momentary / latching setup
is a two second hold down of a button (seems like that could accidently be changed too easily). Biggest problem is it's use of a 4-button remote with push button combinations to work all ten relays -- would rather have a ten button remote control. Guess the "rolling code" feature would make finding a full size RF remote impossible.

In case you were wondering, my fantasy project was to provide adjustable pre-set stop points (via the limit swt or photo interrrupters) for a motorized movie screen masking system. Maybe it would just be easier to use something like a microcontroller / motor driver board with a encoder equipted dc motor. There are OEM systems out there, but very expensive !

Thanks !

John