PIC32DIP Breakout Board design overview

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New PIC32s that come in DIP28 packages are simple to prototype with, and now we made them even simpler. This breakout board has all the suport circutry you need for the microcontroller alowing you to concentrate on the rest of your project. It features:

  • USB and external 3.3V regulated power-supply
  • USB connector
  • 8 MHz crystal
  • Reset button
  • Programing ICSP header
  • All the port pins broken out to two rows of headers for easier use with standard breadboards

You can get a [project for $20], including worldwide shipping.

Prototype PCBs are available in the free PCB drawer.


Contents

Overview

History and related links

Hardware

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Click for a full size schematic image. Schematic and PCB were designed with the freeware version of Cadsoft Eagle, download the latest project files from our Google Code project page.

Microcontroller section

File:PIC32DIP HW MCU 600.jpg

  • Microcontroller
  • Power and decoupling
  • Oscillator
  • Programming and reset support
  • LEDs

Another part of it

File:Project-section-diagram2-600.jpg

PCB

File:Project-render-600.jpg

We used the freeware version of Cadsoft Eagle to make the schematic and PCB. Download the latest designs and firmware from the project Google Code page.

  • PCB and placement notes
  • soldering advise

Partslist

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Click for a full size placement image.

partlist
heading heading
cell cell
cell cell

Firmware

The firmware is written in C and compiled with the free Microchip C18 compiler. You can download the latest files from our Google Code project page.

  • Operating modes
  • extra software required

We used the Microchip USB stack to run the 18F2550 as a virtual serial port. Microchip's code is open but not redistributable. If you want to compile the source, download the stack from Microchip, then drag the source code into the install directory. See the detailed instructions in the PIC compiler how-to.

.inf installation

The virtual serial port (CDC) is an open standard, it should work on any modern operating system.

You don't need a driver, but you will need a .inf file to tell Windows how to use the device. A suitable .inf is included in the project archive.

Commands

Bootloader

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Source and license


Taking it further

Here's some ideas for the future:

  • List

We'll post the most recent firmware updates on our blog. You can also join the discussion in the [forum].

Get one!

You can [get one for $00], including worldwide shipping.

Your purchases at Seeed Studio keep the open source project coming, we sincerely appreciate your support!

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