Description

IR remote controlled, autonomous line follower, light seeker, sumobot, obstacle-avoider and obstacle-follower with PIC18F46K22

Characteristics:

• MCU: PIC18F46K22
• Programming language: C (the code is attached)
• Power: SLA battery 12 V / 7 Ah
• Sensors: ultrasonic ranging module HC-SR04, IR-receiver for remote control systems SFH 5110-38, 2x reflective object sensor QRD1114, 4x LDR (photo resistor)
• Motors: 2 geared DC motors from truck windshield wipers,1x unipolar stepper motor from an old printer
• Motor drivers: L293E (for two bidirectional DC motors with current measurement), ULN2803A (for the unipolar stepper motor)
• Display: Alphanumeric LCD 16x2
• Other outputs: 2.5W speaker, 3x blue LED, 3x red LED
• Control: Autonomous or IR remote controlled
• Mechanic parts: Merkur construction set (Meccano-like)
• PCB: Universal line PCB e=0.1”, the functional and soldering schemes in Eagle CAD are attached
• Target environment: indoor

I want to prepare the next version of Tractorbot Mk2 for a national competition in radio-electronics of youth and then to participate with it at the Czech robotic day in Spring 2015. Hope to see some of you there :-)

Intended features of the new version:

• A single board with MCUs and motor drivers, with remote sensors connected by IDC connectors and flat cables (not such a cable jungle like in this version)
• 2x PIC18F46K22 with mutual UART communication, one for graphic LCD and sensors, the other one for motor controls (a “multi-servo”)
• Two more stepper motors for a robotic hand (for Bear Rescue and Ketchup House contests)
• Total current measurement with a current shunt monitor
• Color sensor TCS3200
• Compression sensor made of ESD foam for a robotic hand (thanks OddBot!)