Atmel microcontrollers with a good example for the use of DS18B20 DS1302 circuit 2 × 16 LCD display with 4 buttons in circuit adjustments can be made
The first button is a long hold in seconds (h) setting switches to the second and third button with the settings is done after the first operation are repeating minutes goes like this continue operations after the last button and holding the set is being stored Retrieving AT89C52 system 12MHz frequency works
AT89C52 Temperature meter project
Temperature AT89C52 keil source code proteus isis simulation schematic files download:
LCD Date Time Temperature AT89C52 DS18B20 DS1302
Password: 320volt.com
Published: 2009/02/02 Tags: 8051 example, avr project, keil example, microcontroller projects
555 Stepdown DC DC Converter 24V to 12V
An interesting circuit transformer core DC12 volts to DC24 volts dc upgrades have been made obsolete n555 number 3 connected to the output end 2sj302 MOSFETs with opto-up Kubla circuit charging source is being used to supply power can give 1.5 to 2 amps
In response to the output diode by399 can use 4N25 opto
24V to 12V DC DC Converter Schematic