Build your own a programmer for writing intel-HEX file to the 89C51, 89C52 and 89C55, PCB file included. The prototype board may be builtusing universal PCB with point-to-point soldering.

Programmer for AT89S52 Microcontroller

The 89C51 with ez52.hex receives a 9600 baud serialdata from PC and generates the appropriated signal applying to the ZIFsocket. P0 is for bi-directional data transferring. P1 provides A0-A7,P2.0-P2.6 for A8-A14.

Atmel AT89S52

The Atmel AT89S52 is an 8051 based Full Static CMOS controller with Three-Level Program Memory Lock, 32 I/O lines, 3 Timers/Counters, 8 Interrupts Sources, Watchdog Timer, 2 DPTRs, 8K Flash Memory, 256 Bytes On-chip RAM.

Compatible with the industry-standard 80C51 instruction set and pinout. The on-chip Flash allows the program  memory to be reprogrammed in-system or by a conventional nonvolatile memory programmer.

These pages created by Wichit Sirichote of  Department of Applied Physics, Faculty of Science, provides schematic and software for hobbyists to practice “learn by doing”, build a simple microcontroller projects at home.

Build Your Own Microcontroller Projects

Some of the projects include – The 4 Channel Pt100 Thermometer, G5-Data Logger, Solar Recorder,    89S52 and PIC Project Board. Even circuits, code and SBC for the popular 8051 can be found here.

Dual Channel Digital Volt Meter

“I do remember the Intersil ICL7135 very clearly. This year 2011, almost 29 Years, the classic integrating type analog to digital converter is still interested. With a cheap price and easy interfacing, I think I will design a cheap digital volt meter with microcontroller to provide serial interface similar to the Fluke45. Two channels is good for scientific experiment.”