Multi Calculator Kit

[teenix]

(11-02-2017 10:16 PM)Harald Wrote:  Hi Tony,

which USB chip are you using? Might be worth me switching to the same you are using to avoid any incompatibilities.

Cheers,
Harald

PS: I can see my parcel has arrived in Australia, but after that they don't provide tracking information anymore.

Hi Harald,

The same as yours, FTD232R.

There is one difference, the USB chip can be in an OFF state on my board. I had to use inverted TX and DTR on this chip and the PIC as there is a possibility that these pins could be driven via the MCLR pullup resistor and the PIC TX pin. MCLR is isolated from the 232 chip via a NPN trans.

This won't affect your board as the TX is not inverted for your version.

No knocks on the door yet.

cheers

Tony