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Green rectangular circuit board with silver connectors, black chips, red LEDs and a USB power cable

Astro Gaming

Astro Gaming PIC16F877A Microcontroller Learning Board 2 in 1 accessory

SKU CH-A678-7T63F

A PIC16F877A microcontroller development board with RS232 interface, eight LEDs and a four-key keypad

  • Standard RS232 interface enables direct PC communication
  • 8 LEDs on RD port toggle via J3 jumper for visual debugging
  • External 5 V DC input with USB power cable included
  • 4-bit keyboard wired to RB0-RB3 for user input
  • Onboard 4 MHz crystal oscillator socket allows frequency changes

Learning Board for PIC16F877A Microcontroller

This accessory is a development board built around the PIC16F877A microcontroller for students and hobbyists learning embedded programming. It provides a ready-to-use platform that eliminates the need for custom PCB fabrication during early experiments. The board includes essential peripherals so users can focus on code rather than wiring. It is not suited for builders who need a finished consumer device or a module with wireless connectivity.

RS232 Interface for Direct PC Communication

The single specification that decides compatibility is the standard RS232 communication interface linking the microcontroller board to a computer serial port. This connection allows straightforward flashing and debugging without requiring a separate USB-to-serial adapter if the host machine has a native COM port. Users whose laptops lack a physical RS232 port will need an appropriate converter cable to establish the link.

Simple Setup with Jumper-Controlled Peripherals

Installation consists of connecting the supplied USB power cable to the external 5V DC input and linking the RS232 cable to the host computer. The 8 LEDs on the RD port are enabled only when the J3 jumper is fitted; removing J3 releases the port entirely for other uses. A common mistake is leaving J3 in place while trying to drive the RD pins externally, which causes signal contention and unexpected behaviour.

Highlights

  • Standard RS232 interface enables direct PC communication
  • 8 LEDs on RD port toggle via J3 jumper for visual debugging
  • External 5 V DC input with USB power cable included
  • 4-bit keyboard wired to RB0-RB3 for user input
  • Onboard 4 MHz crystal oscillator socket allows frequency changes

Specifications

No published specifications for this item yet.

Questions about this item

How does the 16 MHz crystal affect timing on this board?

The onboard 4M crystal oscillator runs at 16 MHz and its socket lets you swap frequencies whenever you need a different clock speed.

What does the RS232 interface actually connect?

The standard RS232 port links the PIC16F877A microcontroller board directly to a computer for serial communication and programming.

How do the 8 LEDs and 4-bit keyboard share the I/O pins?

Eight LEDs tie to the RD port and are enabled only when the J3 jumper is fitted; the independent 4-bit keyboard uses RB0 through RB3 on the same microcontroller.

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