At89c2051 — Projects

To start building these AT89C2051 projects, you need:

  • Breadboard Components:

    • Interrupt or polling
    Use P3.2 (INT0) with external interrupt or simple polling with 20ms delay.

    Difficulty: Intermediate

    Generate up to 4 servo control signals using software PWM. Each servo needs a 20ms frame with a 1–2ms high pulse. Use one timer interrupt to update all outputs sequentially. Add a potentiometer via an external ADC (or use comparator + resistor ladder) for manual control.

    Take it further: Add a simple serial command interface to position servos from a PC. at89c2051 projects

    Difficulty: Intermediate
    Components: SG90 or MG995 servo, 5V supply, potentiometer (10k)

    Servos require a 50Hz PWM signal with pulse widths from 1ms to 2ms. To start building these AT89C2051 projects , you need:

    Since the AT89C2051 lacks hardware PWM, we generate it using Timer0 interrupt.