My ET-ROBOT 877 use 16F877 Available USD $110.00 , If you interesting please contact me .
Features
• Includes Microchip PIC16F877 Microcontroller with 8kb internal Flash Program Memory
• Solid Anodized Aluminium Base for Strength and Light Weight
• 2 DC Motors Installed, for turning and forward/reverse motion
• LCD Installed (2x16 Characters)
• On-Board Programming using RS232 with MAX232 Installed
• 4 Channel 10-Bit A/D Converter
• Micro-switches for collision detection
• Optical Sensors for Line Tracking
• Power LED, Direction LED's and Reset Button
• On-Board Battery for Complete Freedom of Operation
• Real Time Clock (DS1307 Optional)
• EEPROM (24LCXXX Option)
• Buzzer
• Code Examples Provided
• Great as a learning tool for robotics and microcontrollers