Turn-key PCB assembly services in prototype quantities or low-volume to mid-volume production runs

How to measure wind direction

I found this wind direction measurement circuit simple and interesting. If you are doing some home automation project, this might be another sensor included in your project. For Wind direction measurement, you will need a circle from some material (you might even use a CD.) Then stick an arrow on top. One end of the arrow should have a fin. Another end of the arrow should have a piece of magnet. Then put eight magnetic sensors around the circle in the magnet’s way. See drawing:

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I2C EPROM programmer

Sometimes you need to program I2C EEPROM chips and don want to invest any bucks in it. Then you should consider the I2C EPROM programmer originally designed by Claudio Lanconelli. This is very easy to build and use circuit but it supports 24C01, 24C02, 24C04, 24C08, 24C16 24C32, 24C64, 24C65, 24C128, 24C256, 24C512 I²C Bus EEPROM, auto-detects 24XX EEPROM capacity For the I2C EPROM programmer, you need to download PonyProg programmer software from www.lancos.com. Choose “Easy I2CBus” from the Options – Setup menu and the parallel checkbox on WindowsNT/2000. You have to select “AVR ISP I/O.”

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