JP1 Remotes

Then I will thank you directly with pleasure!

Thank you mr_d_p_gumby!

Now that makes a great deal more sense.

Thanks for researching it.

Well, that could be why that is there, but...

a) That pin is programmable as an output (in this circuit, make it a high output for power savings), or an input with an internal pull-up (which would waste a little more power) - according to the data sheet.
b) Freescale (aka Motorola) have been one of ...

I don't believe anyone has attempted an extender for these remotes.

To write, or even modify, an extender you would need to be very comfortable coding in assembler. For most JP1 remotes, that would be Samsung S3C8 assembler, but for this model it's Motorola (aka Freescale) HCS08 assembler. If ...

We may need to split this thread somehow into operational aspects vs. technical details, so all my verbose posts on the technical details don't scare away comments from others on the operational issues.

It sounds like you want to hear from the other extender writers and users on device selection ...

Assuming latency is moderately low, it is more important to keep it consistent than to keep it very low. The maximum length path from the interrupt to the action (starting the next interval and setting the level) should be nearly identical to the minimum length path. If all edges are delayed by the ...

Are you using interrupts to time the IR generation?

I haven't worked through enough of the details yet (of how timers and interrupts interact in this chip) to be sure it is practical. But if practical, I think it is much better than using wait loops.

Without digging up that old detailed ...

Hi John,
I have seen and enjoyed quite a bit of your work in the last few months.
Thanks for all of it.
I also feel strongly about the appropriate synchronization of data flow between layers of software. I have quite a bit of experience with real-time software development and intend to use that kind ...

I forgot to include that in the original post.

It is (modified to prevent 'bots picking it up)

steve underscore munnings at sympatico dot (short for canadian domain)

Hello all,

I have been lurking on this board for a while. I have also been experimenting with a number of things "remote control".
Recently, I purchased a URC-8820. Today I "burned my bridges".
I erased the processor memory in it and put in a small test program (which just blinks the visible LED ...