Retro engineering on a pager, Tatoo Hack

Retro engineering on a pager, Tatoo Hack

This hack, backward me in 1996/1998 during my college years, the pager system was at its peak, there was 3 commercial services and networks here, in…

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Teensy GPS Logger

Teensy GPS Logger

Update 28/08/15, New version more light: *The last and final design, the Teensy and GPS is directly powered from 3.7v li-on batt, 20 hours 5hz…

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DIY Simple Pi Attenuator

DIY Simple Pi Attenuator

I have recently build a RF power meter, called “Trinity FR Power Meter” from Daniel’  webpage ,  in my case in need to measures often…

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Burn a Arduino bootloader to a blank Atmega 328 with optiLoader

Burn a Arduino bootloader to a blank Atmega 328 with optiLoader

Optiloader is a sketch designed for bulk upgrading of Arduino board bootloaders using another Arduino as a device programmer. It stores multiple copies of the…

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Arduino Countdown

Arduino Countdown

I have recently made a PCB of Arduino Countdown from http://hacks.ayars.org/2011/08/how-long-until-christmas.html this PCB have a lot of I/O pin headers that you can connect a…

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