PAXStarter DIP28 USB Development Board w/ PIC18F24K50

Overview

Our PIC18F/DIP28 development board is designed to get you up and running w/ your USB capable project. It contains everything you need to run the PIC18F24K50 and connect it to a computer or other USB capable device.

And to go along with the USB, there is a Program button (attached to RB4), to allow you to enter program mode without extra hardware. It also comes preloaded with Microchip's boot loader (part of the MLA) giving you 2 options to program the chip, either through ICSP or through the boot loader.

This board also includes a power selection circuit, allowing you to power the board either from USB or from another power source such as a barrel jack / wall wort. (The barrel jack / power input header circuit is preferred over the USB circuit to give access to higher power levels without USB restrictions.)

Features

• PIC18F24K50 (DIP28) Mounted on board
• 12mhz External Crystal Oscillator (for higher accuracy.)
• USB Mini-B Connector and Power Selection Circuit
• 2.1mm Barrel Jack for Power Input
• Linear Power Regulator (allowing input voltage 7.5v > Vin > 25v)
• Power output headers to connect to your breadboard or other boards.
• Bypass capacitors and filtering on power input, regulator, USB, and output to help with those stray electrons. :)
• Power LED Indicator.
• 3mm mounting holes, 4mm from board edges.

Why did you make it?

Because it is a very basic and necessary tool that we use in any microcontroller project. You always need the circuit to run the controller, and having it on a board and ready to program makes life a lot easier. It also makes the circuit very dependable and clean, as we added plenty of bypass capacitors and EMI filtering and protection.

What makes it special?

It has an automatic power selection circuit to choose between user supplied power (barrel jack/power in) and USB power. Due to the USB power bus limitations, the circuit prefers user supplied power.

Also, if you use a barrel jack (wall wart) to supply power to the board, you can get that higher voltage on the Power In pins, as they are directly connected to the barrel jack.