Making a Hafler IRIS remote control

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#41
D. Hedin said:
So while my "plain ABS" and "slim" case prints - let us recap.

At this point we have created a remote receiver board that plugs into the IRIS pre-amp.
We are able to control with the inexpensive remote control that comes with the Arduino IR remote kit.
This remote has very simple up/down and left/right buttons that we have become accustomed to on modern IR remotes.

But the original Hafler remote was pretty nice. You had actual volume and balance knobs to turn. Furthermore, they were "capacitive touch activated"
As soon as you touched the knobs they overrode the settings on the amp potentiometers.

Implementation should be fairly straightforward. There exist a capacitive touch library for the Arduino. We should be able to implement this such that touching the potentiometers on the remote "wakes up" the Arduino transmitter board from deep sleep. This should allow for a very long battery life in the remote.

Our difficulty is associated with the software. We need to implement a IR command that transmits and accepts a parameter. Turning the potentiometers on the remote has to result in a volume or balance command that has an associated analog value transmitted. THs is very different than the basic volume up and volume down commands typically used in IR remotes today.

More details to follow.
Click to expand...
Can you sell your version of the remote ?
How do I get in touch with you ?
 
#43
There is an eBay auction right now for a 'Hafler IRIS Bundle' consisting of a non-working IRIS preamp with remote control and matching tuner in white. The white remote is untested and isn't being sold separately but may be an option for you.
 
#45
dgt88 - I saw the white Hafler on ebay. In fact I added a watch and the seller came back with a $175 offer.
But I was only exploring. I don't need another IRIS. Especially a white one.

I have worked out a PCB pattern for my ardunio IR remote control solution for the IRIS. I have made a PCB (for my brother) but I have not yet tested it.
It is a single sided PCB.

As soon as I test it I will publish the PCB artwork/component layout here. I'll post the Arduino software as well.

It is an easy diyAudio project...and no, I am not interested in selling pcb/kits.

FWIW, my wire wrapped prototype has been working fine for the past two years. The only caveat is it does not store the last used volume level.
So next power up it defaults a bit low and you have to crank up the volume when first using the remote. No big deal, and not worth me changing the code.

Sorry I have been away from this thread for a while. Just tied up with some family medical issues.
 
#48
SirePaulGerman - I'm not sure what you mean. The volume pot in my Hafler IRIS was worn and I managed to find a suitable replacement. As I recall it was a bit tricky to replace, but certainly doable.

Be aware that with the remote fitted, the volume last touched (remote volume or the built in volume) is the one that is active.
 
#49
Following up: have you been able to test and verify the PCB for the remote? I have an Iris and original remote, but it doesn't seem to output IR - the red tally light just flashes all the time. I'd be interested in building a replacement, whether it's wire-wrap or on a PCB (and yes, the 3D printing file would also be appreciated!).

Thanks for an entertaining and useful project!

cheers,
Waldemar
 
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