cp2102 ttl to usb header

Designed and created USB to TTL header using cp2102 chip that has nearly the size of PinSocket_1x06_P2.54mm_Horizontal header. So that either PinSocket can be soldered or when permanent micro USB is needed this little board.

1st version

Pictures of first working/tested version below, KiCAD files on GitHub.

It nearly worked out of the box, but for the RX&TX transmit led indication. Those needed to be enabled (cp2102 programmed) using Simplicity Studio 4 and Xpress configurator. It's all well described in AN721: USBXpress™ Device Configuration and Programming Guide.

and here work table after 3h+ spent on soldering&testing:

2nd version - reversed ftdi version / soldering

3rd version - USB connector on both sides to choose, corner mounting hole, labelling and rearrangements

What next?

The next version should have:

  • mounting hole not so close to the edge
  • tx/rx leds on both sides to choose
  • 4 layer PCB to make it even more compact? (but that will make the pcb 2x more expensive)

We'll see when "the future" comes...

See also ATmega-UNI post

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