Introduction

This is a simple timer hardware based on STC89C52RC MCU, and you could watch this video to know more about it: https://youtu.be/WQ8nN4hAElQ

Development Environment

• IDE For Source Code: Keil μVision V3.30
• Design Tool for PCB: Protel 99 SE

Compile

1. Open src/Timer.Uv2 with Keil
2. Click Project on the main menu and then click Rebuild All Target Files;
3. You will get a Timer.hex in the src directory;
4. Download the Timer.hex to the Timer Device with a downloader, such as a downloader based on CH341 chip.

Previews

Timer Hardware

Schematic Design

PCB Layout