Drew ][ TDX – Update

April 29, 2010

All the current orders for the Drew ][ TDX have been shipped.

I still have a couple left if anyone wants one.

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Drew ][ TDX – Shipping Update

April 7, 2010

Thanks for everyone who has bought one. I plan to ship all the cards out end of next week. I am just waiting for some packaging to turn up, so please bare with me.

Thanks for all the prompt payments.


Drew ][ TDX – Finally Completed

March 31, 2010

Well after many months I now have completed boards with cables and backplates. Some initial cards will be going out next week and once I get feedback I will get the remaining cards ready for general sale.

(Cables to backplate may vary, above is one example)


Drew ][ TDX Production Cards – Plates Galore!!

March 23, 2010

Finally I have recieved the back plates! 🙂 As it is quiet on then laptop card front going to focus on sorting out the first production run. If you are waiting for a card please be patient as I am almost there….honest lol


Drew ][ TDX Production Cards – Update

February 17, 2010

I have now recieved the first plate and all looks good. I just now need to choose the right 3.5mm jack :).


TDX Stereo Card – Jan Update

January 28, 2010

Ok firstly have been a bit slow this month with finalising the various bits that finish of the overall card. I have now got a prototype back plate completed and just trying to get price down for the manufacture


New Year updates…

January 5, 2010

Some New Year Updates

*Drew ][ TDX Card*
Now have some sample back plates and 15 PCBs have turned up 🙂






























*Portable GS Stereo Card*
Have moved away from the LM386 pwr amps and now using a single dual power amp TDA2822M. This was primarily to keep component count down as the dual pwr amps are actually more expensive.

I am also testing with the DS1802 dual digital pot (this provides a single IC with mute function, but doesn’t remember the wiper position unike the DS1669 though its more designed for volume control). I would say I am almost there for a completed circuit and just ironing out some minor issues to avoid instability in the circuit.



It is looking like the prototype board for the GS laptop will consist of:-

  • MC14052B – DeMux
  • TL082 – Op Amp
  • DS1669 x 2 – Digital Pots
  • TDA2822 – Dual Pwr Amp

The GS Laptop project have tight timescales so at the moment focus is on this rather than the Drew ][ TDX card…

Michael Mahon has been a real mentor for this project and massive thanks goes out to him.