CHRP4 is a versatile and inexpensive microcontroller development system designed to help anyone learn how to make simple line-following, obstacle sensing, or Sumo robots.

CHRP4 is a robot focused derivative of UBMP4, and was designed for learning or teaching PICmicro programming for robotic applications using either Microchip’s MPLAB X IDE or the cloud-based MPLAB Xpress IDE. Its USB bootloader allows CHRP4 to be programmed in C using almost any device – including Chromebooks!

CHRP4 Hardware Features

• Microchip PIC16F1459 USB-capable microcontroller with 8k words of program FLASH (6k words free when using the USB bootloader), 128B of user FLASH, 1kB of RAM, 10-bit ADC, and a built-in temperature sensor
• optional SN754410 (or L293D) quad half-H bridge motor driver to run two DC motors in forward and reverse
• optional LF50AB low drop-out regulator for 6-12V battery operation
• 5 built-in pushbuttons
• 5 visible light LEDs
• 1 piezo beeper output
• optional 4-pin header for PORTC I/O pin expansion (designed for an HC-SR04 ultrasonic SONAR module, but can also connect to servos, optical sensors, NeoPixels, etc.)
• optional IR LED and phototransistor circuits integrated on three mini, break-away boards (one designed for line following robots, two designed for general floor sensing)
• optional IR demodulator for remote control decoding
• USB 2.0 type-C port for power and programming
• 6-pin ICSP (In-Circuit Serial Programming) header for PICkit-4

Go to mirobo.tech/chrp4 for more information.