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DIY Home AC power logger
posted December 13 2010 6:10.16 by Giorgos Lazaridis

Here is a DIY home power usage logger, based on the AVR ATmega168 microcontroller. The output is displayed on a graphical LCD display as a bar graph. The power is calculated with the P=V*I formula. To get the current (I), he used 3 flyback coils from old TVs he had (has 3-phase power). Each coils generates a voltage according to the current of the line that is attached to. A 0.2 ohms current sense resistor allows him to measure the current. To have more accurate readings, he amplifies this current in 3 stages (X1, X10, X100) and uses the best fit gain. Data are then stored in an SD card. Read more info in his page.

[Link: stahlke]
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Tags: electronic project   diy   microcontroller   sensors   avr   

Meet SEGFAULT: the 2-wheels self-balancing vehicle
posted December 13 2010 5:35.43 by Giorgos Lazaridis

Charles made the SEGFAULT, a Segway type vehicle. His goal was to make a ridable self-balancing 2-wheeled vehicle, whose controller is implemented...

[Link: equals zero]
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Tags: electronic project   physics   accelerometer   research   sensors   

iPad controlled christmas tree
posted December 13 2010 5:16.53 by Giorgos Lazaridis

Darconeous had recently hacked his christmas tree lights. After doing some work with them, he decided that he had to add a remote control to change the way...

[Link: deep darc]
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Tags: electronic project   remote control (RC)   ethernet   

Programmable Home Security Alarm System
posted December 10 2010 6:53.57 by Giorgos Lazaridis

Many people want to have their own DIY home security alarm system. It has a couple of benefits more than the commercial ones. One major advantage is that it is more difficult to hack...

[Link: electronics-lab]
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Tags: electronic project   diy   security   

We wish you a merry christmas... on the run
posted December 9 2010 7:13.18 by Giorgos Lazaridis

Raj from Embedded Lab just published his new electronic project. Christmas is on it way, so he felt like making a big "Merry XMas" sign with running LEDs. This is a very nice example...

[Link: Embedded Lab]
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Tags: electronic project   pic   microcontroller   led   

The HAND: a Human Arduino iNterface Device HID
posted December 9 2010 6:52.04 by Giorgos Lazaridis

Bigdinotech again with another Arduino based project. This time, he wanted to make his own HID (Human Interface Device) for his computer applications, so he designed the HAND...

[Link: bigdinotech]
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Tags: electronic project   computer peripheral hacks   gaming   microcontroller   arduino   accelerometer   avr   games and fun   

Arduino Vehicle Data Logger
posted December 9 2010 6:16.41 by Giorgos Lazaridis

Youtube user bigdinotech had posted this July an interesting video with his project. He designed a data logger, which captures data from the OBD (On Board Diagnostics) connector...

[Link: bigdinotech]
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Tags: electronic project   microcontroller   auto/moto   arduino   accelerometer   avr   

RS232 to composite TV signal interface
posted December 8 2010 18:38.19 by Giorgos Lazaridis

Thepeople form Batsocks made this serial to TV interface, which named "TellyMate". Data are sent to this device with an RS232 protocol. It then...

[Link: Batsocks]
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Tags: electronic project   microcontroller   vga   monitor   

VU Meter style clock
posted December 7 2010 18:55.58 by Giorgos Lazaridis

AndyO from Digital DIY, designed an electronic clock with hour and minute pointers like analog VU meters. The original idea was taken from another...

[Link: Digital DIY]
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Tags: electronic project   clock   diy   rc servo   pic   microcontroller   

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