Amicus shields

[dhouston]

A bit of progress - I've identified the terminals along top & bottom of the board and have 3V3 and GND for the EM500 & GA1000. All that I need now are to decide on TX, RX, & RESET for the EM500 and the SPI connections between the EM500 & GA1000. Are there any suggestions for RX, TX & RESET? I don't want to create any conflicts.

The GA1000 page at Tibbo says...

The module utilizes SPI interace and only requires five I/O line to control. Flexible mapping allows your application to use any five available I/O pins.

This applies to EM1000/EM1202/EM1206 but it's unknown whether it will apply to EM500 until Tibbo actually releases the long-promised firmware for the EM500/GA1000 combo.

[dhouston]

In the spirit of the Audino/Amicus/Xino/??? projects I want to make this as universal and flexible as possible.

Looking at the pictures of the Xino Basic board I have on order, they do not have the 4-pin power connector in the upper left corner, so it looks like I need to use the 3V3 from the lower edge.

Also, I would like to use an SMT socket beneath the board for the GA1000 as it should simplify supporting the cantilevered board (e.g. with a stick-on dot) and keep the overall height to a minimum. How much vertical clearance is there on the bottom of the shield?

Eight of the EM500 pins are available as GPIO pins if the EM1000 is not used. I'll try to work out a through-hole pad pattern to allow LEDs or digital inputs. Does anybody make LEDs with internal resistors suitable for 3V3?

Any other thoughts and suggestions?