What Headphone With Microphone For The Cxx00? Options

[dbowden]

Update: there was a small error in the schematic. I took the resistors like they were in the rh2, but creative traced the resitors and switches a bit different: i.e. they took resistor 4 for Forward and resistor 5 for Rewind. the rh2 had this exactly swapped. so I just swapped the values of the resistors in the schematic so that they work properly.

Resistors of: Switch Forward and Switch Rewind are swapped and Switch Vol+ / Switch Vol- also are swapped... just look into the UPDATED schematics posted above. I've deleted the false one.

You can't do that.

I tried modifying the Zen micro remote as in your schematic (only using resistor values for the CE-RH1, since I have a C760), and was disappointed when FW, RW, and Vol - didn't work.

I took a closer look at the schematic, and saw why: all the resistor values on the switches depend on the previous values of all the resistors in line (that's why the values roughly double each time). If you change the orders of the resistors, the total resistance value will be wrong, and the Zaurus won't know how to respond. If you're lucky, it may work the way it was originally intended, but you'll most likely get an error and the remote will stop working.

Here's an example of why. For the FW key, the switch completes the circuit at R4, which means it includes the values of R2 and R3. If you use the values in the intended sequence, you get a resistance of (330 + 470+ 690) = 1490. For RW, the switch completes the circuit at R5, which means it includes R2, R3 and R4, so if you press RW with the correct values you get (330 + 470 + 690 + 910) = 2400

If you swap R4 and R5, then for the the FW keypress you get a value of (330 + 470+ 910) = 1710, and for RW you still get (330 + 470 + 910 + 690) = 2400

The 1710 value will likely be out of the expected range, and cause an error. The RW should still work normally, even with the resistors reversed.

You can't swap key actions by swapping the resistor values.

If I've confused anyone, let me know and I'll explain again with pictures.

Bottom line: I put the resistors back the the proper order, and my Zen Micro remote conversion to CE-RH1 values now works as expected, although some of the switches are labelled wrong. I'll either live with it, relabel the switches (I think they can be swapped), or use Keyhelper or other routine to change the functions of the switches in software.

MONVMENTVM -- thanks for the info on using the Zen Micro remote -- it's really a lot better than I would have built from scratch. I personally think it looks nicer than the Sharp remotes.

David

[jpmatrix]

hi
i'm about buying shap ce-rh2 remote control for my c3000. i wonder how good is kino2 support with the rh2 on the c3000 ? any thoughts ?

an alternative would be the bluetrade bluetooth stereo xmiter/receiver...
but it is a much expensive solution ;-)

[speculatrix]

since the move of the forums (just before xmas 2005) caused the loss of all attachments, and this thread has proved invaluable to me and I happened to save most of the attached images, I have uploaded them to http://www.zaurus.org.uk/download/images/

I am going to make an adaptor cable which will allow me to plug a regular PC headset (stereo headphone/microphone combo) into my Z 3100. It means I can use a decent pair of headphones with a separate mic, or, use a headset:
I bought a 4-way 3.5mm jack plug, and a couple of inline 3.5mm stereo sockets. I will also try and adapt or make a remote control which will plug into the mic socket, if I can find something small enough I will make it part of the cable.

At the moment I use a dedicated mono headset where I chopped off the two plugs and used an ordinary stereo (3-way) plug, soldered the speaker to one, mic to other. Works well, but means I then have too much to carry if I want to use Z for music too.

[Gatu]

Hi,

if it is just for using kphone, you can use a cheap headset from a cellphone also, it will do the job and normally these headsets are quite small...

Br,
Gatu

[A5DF]

Anyone tried motorola's bluetooth speakerphone module? BT on my Z has never worked, so I'll try out my headset once I upgrade to OZ. Does alsa even support this?

[speculatrix]

Hi,

if it is just for using kphone, you can use a cheap headset from a cellphone also, it will do the job and normally these headsets are quite small...

Br,
Gatu

yes, this is effectively what I have got already...