I have this week with Input Devices and completed the following:
I came up with an idea for my final project after Neils presentation of various input devices. The ideas is that I will produce an array of co-located capacitive touchpads and a multicolor LEDs. The touchpad will serve as input device to schedule a calendar event.
I decided to redesign Matt Keeters Capacitive Multitouch, so that I could attach a wire and thus be able to integrate the touchpads in my design.
Running Design Rules
Creating Toolpath in Fabmodules
The Milled Board:
The board ended up with some rough edges, which I decided to romove with some gentle sanding.
I thus also checked for condutivity before populating the board.
Populating with these Components:
Connecting to the Programmer
Argh - the design didn't include a breakout for the ISP.
Matt informed me that he used a clip but that I could also solder wires to the relevant pins and break that out to a standard 3x2 AVR programming header.
So I went back to the datasheet and came up with this (erronous) schematic for the connection
I investigated the Connections
Looking for possible the error
Accidental Damaging the PCB
Revised Connection Schematic
The Final PCB
Burning the Bootloader
Uploading the Code
Neil Feedback to the Board
I might have to redo this board to get the desired functionality
Neil suggested that I either:
Way ahead:
I decided to follow the ladder suggestion and created a simple input devices with a regual button.
The video to the right shows how the button controls the onboard led