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Hackaday Competition Entry |
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Written by nuxie1
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Monday, 18 December 2006 |
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Page 1 of 8 Description: This design uses the Microchip PIC 18F2450 or 18F2550 USB enabled microcontroller. The total parts cost is around $15 including the microcontroller for a single board. The board features a USB port that can be used with a bootloader for easy programming. It is designed to use a 20MHz crystal. Two switches are included, for MCLR and RC0. Five analog inputs are brought out (AN0-AN4) which can be used to read analog sensors, as well as the two CCP ports which can be used to control servos or other devices. A user LED is built in, using RA4. The onboard USART ports are brought out to a three pin header which can be used to talk to other microcontrollers, or to an RS232 device with a MAX232 level converter. The whole of PORTB is brought out to a header, as well as a pair of power headers. An ICSP header rounds out the board for programming the PIC.
The board also has plenty of space to the right for text or images, and so would function very well as a business card.
The difference between the two SMD versions is that the home version has the through hole parts flipped so they will be on the opposite side of the board. The main SMD version would need a double sided PCB made so all parts can be on the one side.
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Last Updated ( Wednesday, 28 March 2007 )
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