Hi,
Westy has suggested one inverter method, but many types of intergrated buffers or inverting gates (e.g. NAND) could be used. However, unless I had a suitable ic to hand, I would just use two "general purpose" NPN transistors (e.g. BC 548, or many, many others), one for each direction, and four resistors, one in series with each base (input) and one pullup from each collector (output) to the supply rail. Perhaps 10k for the inputs and 1k for the outputs, but the exact value is unlikely to be critical.
Cheers, Alan.
That looks like the USB adapter recommended by manuka (in NZ) and ones I've used successfully in UK. But there is always the risk of "fakes" on ebay (or even elsewhere). I can't check the postage cost (here in the UK) but if it's low then it might be "worth a punt". Or this one is even cheaper (again with no absolute guarantee of success) if you can wait a few weeks.
Westy has suggested one inverter method, but many types of intergrated buffers or inverting gates (e.g. NAND) could be used. However, unless I had a suitable ic to hand, I would just use two "general purpose" NPN transistors (e.g. BC 548, or many, many others), one for each direction, and four resistors, one in series with each base (input) and one pullup from each collector (output) to the supply rail. Perhaps 10k for the inputs and 1k for the outputs, but the exact value is unlikely to be critical.
Cheers, Alan.