PIC12F675 | Electronic Project Circuits

Posts Tagged ‘PIC12F675’

Voltage programmable square wave generator

Here’s another daft yet interesting PIC12F675 idea I came up with. When I wanted to show someone how logic gates worked I could only find a NAND gate which wasn’t very handy for demonstrating AND’s OR’s, NOR’s and ExOR’s. I also wanted to have a play with the A/D converter on the 12F675 so I came up with the idea of a PIC that could function as a single 2-input logic element. The logic function is determined by an analogue voltage applied to the GPIO4 pin when the device is first reset, it isn’t sampled again after this so logic can’t be changed on the fly. The 3 MSBs of the A/D conversion give eight distinct voltage levels that map to specific logic functions.
Read Source: http://picprojects.org.uk/projects/logic/logicelement.htm

Be the first to comment - What do you think? Posted by admin - June 8, 2009 at 9:11 am

Categories: Microcontroller Tags: A/D converter, PIC12F675, square wave generator, voltage controlled oscillator

Solar Panel controller by 12F675

The purpose of this project is to realize a Solar panel controller. Initially developed for a sailing boat, the target to reach was to control the level of charge and discharge and to protect a 12 volts lead battery connected to a 32 watts solar panel.

The project is based on a 12F675 and uses HEXFETs to switch the load and the solar panel. The programs were developed with PROTON+ and around 10 of those small devices are today doing their job without any problems. The use of a PIC processor gives a large access to the way the load is used (with or without over voltage protection) or how the controller reacts when the full charge level is reached. This gives a lot of improvement possibilities.

This project has absolutely not the intention to show the best and most effective way to program. After all, I am a hobbyist too. It is a example of how to solve quickly a problem with a small and robust realization.

Read More source:http://users.picbasic.org/projects/SolPanCtrl/solar_panel_controller.htm
Thank you.