pcb clips and toggle switch holder for
AT91SAM7S development board
The AT91SAM7S development board provides a convenient way of experimenting with the ARM microcontroller. However the pcb is very densely populated and there are no bolt holes on the board. So in order to be able to fix the board to a base I 3D printed four support clips for the board. The pcb supplied to me had four rubber feet attached to the bottom of the board so it stands a few mm proud and made the clips so they held the board firmly without being too tight.
I also wanted to use the on-board usb bootloader which requires a few ports to be programmed manually to reset the internal programme. This reset can be achieved by bringing the TST, PA0, PA1 and PA2 high then powering the board for 10 seconds. After that TST is pulled low and the board re-powered. I used a four-pole toggle switch to these pins so that I could easily arrange for this. I therefore also 3D printed a holder for the toggle switch.
THE CREATIVE SCIENCE CENTRE
Dr Jonathan Hare University of Sussex, Brighton.
home | diary | whats on | CSC summary | latest news