Serin serout problem

[skimask]

I bought three pair of them , They all act the same...
it looks ok from the scope doesn't it ??

A/D is working as expected? Values are what you need and all that?
Yes

Put the old ones back in and snap a pic of those, put the 2 pic's up side by side. Maybe one is inverted from the other or something.

[lerameur]

I did that they are almost the same on the scope.

[skimask]

I did that they are almost the same on the scope.

Almost apparently isn't close enough.
Fatten up the traces a bit if you can and repost the pics including the original RF module sets.
Also, you might want to try speeding up the TX rate, maybe a couple more sync bytes ($55), maybe less, who knows.
That's the problem with getting something to work with one thing, and then using another, you gotta redo practically everything.

[lerameur]

Ok I posted a picture of the working module, I bit different.
same link

[skimask]

Ok I posted a picture of the working module, I bit different.
same link

2nd picture, bottom trace is old 'working' receiver output?

If so, do you see that big gap after every transmission? That's the data slicer slowly losing it's mind. After a couple of ms, it starts going nuts, which is why you have to train the rx.

If I had to guess, I would say try using n2400 (or t2400, I don't remember which) instead of what you're using now, on both TX and RX. Then try t2400 on the TX and n2400 on the RX. It (the new TX/RX pair) looks like it's inverted or something.
And again, try bumping up the speed. On the new RX 'scope picture, see how that gap isn't there? That thing loses it's mind fast.

[lerameur]

Ok i tried faster speed, and same thing, I changed to t2400 here si the result, it looks good, but the output gives me
tempc: -6396C
tempf: -60 F

3rd pic:
http://www3.sympatico.ca/lerameur/

It also take like 15 seconds before anything appears on the lcd.
whereas before a few seconds

Then try t2400 on the TX and n2400 on the RX.
output is now:
tempc: +148C
tempf: +99.75 F
and it does not seem to be moving from that

i did all the test with all three set of TX and RX modules, same results with each

these modules has to be working, the only difference is the white space is a bit smaller.. unless it means the chip is useless. Should i order other fron Rentron ?

[skimask]

Ok i tried faster speed, and same thing, I changed to t2400 here si the result, it looks good, but the output gives me
tempc: -6396C
tempf: -60 F

3rd pic:
http://www3.sympatico.ca/lerameur/

It also take like 15 seconds before anything appears on the lcd.
whereas before a few seconds

Then try t2400 on the TX and n2400 on the RX.
output is now:
tempc: +148C
tempf: +99.75 F
and it does not seem to be moving from that

i did all the test with all three set of TX and RX modules, same results with each

these modules has to be working, the only difference is the white space is a bit smaller.. unless it means the chip is useless. Should i order other fron Rentron ?

How about n2400 on TX and t2400 on RX?
Try 1200 or 300 yet?

Order from Rentron - I would stick with what works, or at least what has worked in the past rather than trying something new.