Using a prototype board to test micro-controller firmware could save experimenting time, ease of use, reduce mistake. The prototype boards for micro-controller are widely available at local, or even online stores.
 |
| Prototype board for 8-bit PIC micro-controller |
We can make our own prototype board with a few dozen of components on a DIY circuit board. The cost is below 20USD with around a day of manual components assembling. I customized and designed my own PIC16F887 micro-controller development board at home using existing components.
 |
| I use a 18x20 cm single side FR-4 copper clad board |
It has the following feature,
- I2C real time clock (DS1307), AT24C16B EEPROM
- SPI EEPROM AT93C46B
- LED connects PORTD via a DIP switch
- MAX232 RS-232 converter
- USB Type-B connector for PIC18F4550
- Reset Circuit
- A passive buzzer driver
- Two POTs for ADC module
- One LM35 analog temperature sensor
- A 20MHz crystal oscillator
- A PS/2 connector
- A 16x2 character LCD
- 12V input to +5V DC regulator
- Four input push buttons for Port-B Interrupt On Change.
I design this Printed Circuit Board (PCB) using Proteus 8. It's light weight, and easy to use. This software can generate Gerber file for standard PCB fabrication.
 |
| Schematic Sheet #1 |
 |
| Schematic Sheet #2 |
 |
| Schematic Sheet #3 |
I use a single sided copper clad board with a size of A5 paper. It has some wire jumper since the circuit wiring is more complicated.
Click here to download this design file.
No comments:
Post a Comment