Arduino Shield

p.Brain-ds24 Robot Controller

Arduino Shield

Postby gingermike » Thu Oct 14, 2010 9:27 pm

Hi Matt

My hex has been on the shelf for a while, so I thought, as I was working on a few Arduino projects that I would make a shield so that I could use your great Hexapod locomotion, but drive it with an Arduino over I2C. So the design is to take a p.Brain-DS24 and mount it on a Arduino compatible shield.

I haven't much space, so I have dropped a few pins, not sure how much they are used, so missing 3 pins for UART1RX/TX/ISSP/ISSPMCLR. Also dropped Digital 0-3 (no SPI) or Digital 8/9 which double as analogue 4 & 5. The good news is all the PWM pins are available, serial and TTL. The I2C has 3.3v/5v level shifting and all the Arduino pins are available, so there should be no shortage of I/O (14 digital [6 which provide more PWM] and 6 analogue), on standard headers for any other shields you want to stack!

There's a 5V 500mA LDO, polyfuse and a mosfet to switch power to the servos, controlled via I/O pin 2,3 or 4.

The servo connectors are at 90 degrees to the board as I found it hard to get to the vertical connectors when fitted to the hex.

Will what I have left out compromise this project too much? Can you see any obvious problems?

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BTW been getting gone away mysql errors on the forum tonight.
gingermike
 
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Re: Arduino Shield

Postby Matt Denton » Fri Oct 15, 2010 10:20 am

Nice work! Its great to see someone making their own motherboard for the ds24, I think you are the first :) I don't know much about arduino, look forward to seeing this project progress.

I haven't had any mysql issues today, maybe the server was having issues last night?
Matt Denton
AKA: Winchy_Matt

micromagic systems ltd
Matt Denton
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