Controlling seperate Picaxe chips with highs/lows on inputs/outputs

[djmikeys]

I am trying to control seperate picaxe chips by simply feeding a high from an output of one chip to the input of the other chip. I thought that this was going to be really simple but for some reason it doesn't seem to work at all. I could do it easily enough by putting a relay in-between the chips but I was wondering if anyone knew why this does not work?

Cheers,
Mike

 

[bgrabowski]

Have you connected both chips to the same ground? Have you confused legs and pins in your programme?

 

[MartinM57]

Absolutely nothing wrong with the idea and relays don't sound like the most optimal solution

Minimise your solution to the smallest set of components that don't work and then post some code, circuit diagrams etc and the forum can take a look.

 

[boriz]

“I was wondering if anyone knew why this does not work?”

Only a crystal ball can help with that question, until you provide more info. Like some code, or a circuit diagram.

See if this works (My crystal ball says you are using a 14m):

'run this on the TX
#picaxe 14m
do
	toggle 0 ' output pin zero, physical leg 13
	pause 500
loop

'run this on the RX
'put LED on output 1
#picaxe 14m
do
	if pin0=1 then ' input pin zero, physical leg 7
		high 1 ' output pin one, physical leg 12
	else
		low 1
	endif
loop

 

[manie]

Yes, sometimes you get so caught up in the problem that the "everyone knows what I'm struggling with" syndrome permeates all else. I must occasionally stop myself to think how to describe the problem to others. Usually, with a schematic and some code, the problem is resolved in just a few posts, unless it is a "yummy" strange one of course !

 

[kewakl]

is the darlington chip installed? (in the TX board)
try removing it and replacing it with a resistor pack.