Build the AVR learning boards with I/O interfacing modules.
Mainboard Features
- Pin compatible for 40-pin AVR Microcontrollers
- Single sided PCB, header for 4 I/O ports, ISP port and RS-232 port
- Built in +5V voltage regulator LM7805
- Onboard In System Programmer header
Figure 1 Mainboard layout
I/O Modules:
LED Board
- The LED board provides 8-bit dot LED. The board can tie to the main PCB easily with a 10 pin ribbon cable.
Figure 2 LED Module
Tact Switch Module
- The switch module also for 8 bits input port. When the key was pressed, the logic will be '0'.
Figure 3 Tact SwitchModule
LCD Module
- The LCD is HD44780 compatible 2x16 text LCD.
Figure 4 LCD Module
Keypad Module
- The board is 4 matrix keypad. Student can learn how to write the code that scans the key.
Figure 5 Keypad Module
Figure 6 Signals of the ISP header
Download the complete file here : kit_module.zip
The zip file contains all PCB boards, and the Atmel MCS-51 main board, RTC, Dallas Digital Thermometermodule.
Any question please contact: eyulnt@yahoo.com
Updated: 6 October 2009
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