Mathematical Manipulation of Pure Sine Wave Inverter using ATMEL 89S2051 Didik Rostyono and Harsono Hadi explain how to produce the sinewave output inverter using the ATMEL microcontroller! (available only in pdf file (274kB), click the link to download it)
AT89C4051 as RTC updated Realtime Clock with LCD by Ajay Bhargav, featuring big size number!
xTimer V1.0 with 4094 New design xTimer using CMOS shift register 4094 for driving 7-segment LED directly! .
AT89C4051 as RTC Realtime Clock with LCD by Ajay Bhargav from India.
saver6 Latest design night light saver, built with sdcc.
xTimer V1.0 4-Channel Timer, 89C4051 MAX7219 display driver. Source code with sdcc available now!
89C2051 Proto Board Layout PCB for experimenting with 89C2051 & AVR uController by M Asim Khan, Pakistan.
Download Now ezdl4 ! New PC software for Easy-Downloader V1.1 and V2.0. No problem with unsorted hex file. Automatically detect COM Port and programmer board. Updated EZ4.1.
Easy-Downloader V1.1 with SDCC Renovated programmer board with SDCC, complete schematic and layout with MAX232 for rs232 level converter!
Easy-Downloader V1.1 Serial interface programmer board for writing intel HEX file to the AT89C2051/4051 flash based microcontroller. New EZ Uploader V3.0 for Window and PCB file are included.
Make Your Own Single-Side PCB for Easy-Downloader V1.1 I am very happy with my student, Plermjai(his name means feel delighted too) Inchuay (his family name means angel helps him), who provides me his page describing how-to-make a single side PCB for the Easy V.1.1. So cool! his prototype was made by hand writing with a pen for making PCB! Available now single side with Protel format.
Very Easy Single-Side PCB for Easy-Downloader V1.2 Puiu Chiselita from Romania provides us a very easy single-side PCB with some modification for RS232 level converter and indicating LED. Puiu detailes how to make the board at home and gives some useful trick to making a board easier.
Experimenting the 2051 with C Programming I provide this page for beginners who interested in using C and Assembly for the 2051/4051 chips, e.g., driving dot LED, scanning 7-segment and keypad, connecting dump terminal, stepper motor, SSR, interfacing I2C EEPROM, display driver, calculating CRC-16, etc.
Night Light Saver V5.0 I have designed a device that controls a night light at home. The saver uses 2051 chip and a small triac. The saver features low-cost, simple installation, no battery backup, and save energy.
Clock Controller V1.1 The Clock V1.1 provides the same function as the saver does but with additional 4-digit LED display and 4-key input for setting the clock and turn on/off AC load. The circuit uses single 2051 chip, and relay or opto-triac output for driving AC load.  source code with sdcc for 8051!
DigiThermo V1.0 Build a laboratory instrument that measures time and temperature. A 89C4051 interfaces 16x1 line LCD, 3-digit DVM CA3162 and LM35D precision temperature sensor. This device is capable of providing 0.1C readout.
Miniature Real-Time Controller This is my long history home-use-controller that has been using at my home since 1997. The Miniature Real-time Controller has a 2051 chip with timer6.asm, an open collector 74LS07 and MAX232 chip. The scheduler of on/off time for 6-channel output is downloaded via PC.
Line Follower ROBOT Controlled by 2051 Award Winner from VINGPEAW Competition 2543 by my student, again, Plermjai Inchuay. He provides this page describing his robot platform, control circuit by 2051 chip, black tape sensor, and control program in C. See MPEG file how the robot tracks the course during competition.
8051 Microcontroller Family
Fan Thermostat Build a simple fan thermostat with LM35, ADC0804 and 89C51.
Data Acquisition System with VB Build a data acquisition system with Visual Basic and the 89C51.
The 89Sxx learning board Build a simple and cheap 89Sxx MCU learning board by Tahan Prahara, Indonesia.
The 89C51 PABx Mohammad Shakeel from Pakistan describes how to build a simple PABx board using the 89C51.
89S52 Project Board Simple 89S52 board for student projects.
Controller for Hybrid Power Plant The 89C51 control board for controlling photovoltaic-wind turbine and diesel engine. Developed by Didik Rostyono from Indonesia.
LCD Thermometer 2nd version of Thermistor Thermometer.
Thermistor Thermometer Simple thermometer made with NTC thermistor.
Digital Clock with Alarm using DS1307 new design by Ajay Bhargav, best for student projects.
SPI Flash Microcontroller Programmer V3.7, new hardware and software for programming 89Sxx and AVR chips. Designed by Mohammad Asim Khan.
New 8051SBC Brown-out protection, WDT, 20x4 LCD BUS interface. Simple scope using Nokia 3310 LCD.
ATMEL 89 Series Device Programmer more chips and easy-use devices programmer!
S-52 Simple Microcontroller Learning Board Simple hardware for beginner to learn 8051 microprocontroller, single side pcd with ISP loader designed by Prahlad Purohit from India.
Cheap Cable of Asims ISP Loader for 89Sxxxx Simple hardware for code programming new series MCU from ATMEL, 89S51, 89S52, 89S53, 89S8252.
ISP Flash Programmer V3.0a Flash programmer using ISP designed by M Asim Khan for AVR and 89Sxx series. Updated software! (recommended for applications)
MiniLOGGER V3.0 New design data logger board, 64kB T89C51RD2, 4-channal 12-bit ADC, built-in LCD and 128/512kB battery backup memory. New page for minilogger DC Amplifier for Pyranometer
USB & GLCD expansion board for 8051SBC Simple circuit for USB and 128x64 GLDC interface.
Experimenting the 8051SBC with c51 compiler sample code and startup file for 8051SBC. Using a popular c51 compiler with monitor program.
8051SBC V1.0 New generic tool for learning microprocessor. The 8051SBC, Microprocessor Learning Board. More commands and peripherals. Complete schematic, PCB layout and firmware are available now.(recommended for applications)
Easy-Downloader V3.0 New design the flash programmer board specially for 89C55WD. The lock and erase functions are now implemented and tested.(not recommended)
Easy-Downloader V2.1 Simple modification of Easy programmer V2.0 enables the 89C55WD to be programmed. The beta version of EZ55.HEX and source code EZ55.C are available for download.
M Asim Khans Programmer Ver 3.1 Latest M Asim Khans Programmer featuring more chips, enhance programming speed, support Window2000/XP. New target chips, 87C51 and 87C52.
C52EVB V2.0 with 32KB eeprom boot loader New Microprocesssor Learning Board for 89C52 CPU with 32KB external eeprom. Modified PAULMON2 provides program saving and boot loading.
Easy-Downloader V2.0 The simple programmer for 40-pin AT89C51/52/55. Modified firmware for free compiler 8051, sdcc. Beta version for 89S51 and 89S52, a bit hardware modification.
Using Easy-Downloader V1.1&V2.0 with Unsorted HEX Files Kurnia Wijaya from Jakarta Indonesia helps me writing the program that sorts the intel hex file generated by some compilers.
How Easy-Downloader V2.0 Connects Host PC Details description of simple protocol between programmer board and host PCs software.
Program the AT89S8252 and 89S53 with Easy-Downloader V2.0 Upgraded EZ52 to EZ53.hex enabling the Easy-Downloader to program 89S8252 and 89S53 chips without any modifications.
Make Your Own Single-Side PCB for Easy-Downloader V2.0 This work was contributed by Bruno Macio from Brazil, a single-side PCB for Easy II with MAX232C for RS232 level converter. For those who use Portuguese may ask him directly.
Very Easy Single-Side PCB for Easy-Downloader V2.2 A variant single-side PCB of Easy V2.0 contributed by Puiu Chiselita from Romania.
EZ Uploader V3.0 Download a window version of EZ and EZ2, the beta EZ3, automatically connects the Easy-Downloder V1.1 or V2.0 to an available COM1-4 port.
EZ Uploader V3.1 Upgraded EZ3.0 with additional READ command and SAVE AS Intel-HEX file.
C-52 Evaluation Board This board uses 89C52 with a modified 8kB PAULMON2 monitor program, 32kB SRAM for writing application program. The C-52 EVB was designed for studying "Assembly and C Language Programming for Microcontrollers". Latest PCB file included.
C-52 EVB Robot Controller Use a C-52 EVB for simple robot experiments. Build a simple two wheels robot with L293 H-Bridge driver and IR sensor. Write a C program controls robot tracked with black tape.
MiniLOGGER V1.0 Build your own a personal data logger having 8-channel analog input -99mV to 999mV with 1mV resolution (CA3162), 3-digit dual slope integrating converter, battery backup 256kB SRAM, RTC, RS232C, direct connected internet server for remote data retrieving. Example circuit and data for measuring Insolation and Air temperature is included. (not recommended)
Connecting MiniLOGGER with Easy-Server V0.9 Run Easy-Server V0.9 on PC connected to internet gateway enabling remote access the MiniLOGGER.
Simple RS422 Converter for Minilogger Build a simple RS422 converter for the Minilogger.
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mantap........
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