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Windows 7 sleep issues with unattended wakeup

I recently built myself a backup NAS drive using Windows-7 professional as the OS. The power profile of this system was simple. Everyday wakeup at 3:00AM and sync up between the shared-drive and backup-drive. I use the task-scheduler to set

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Posted in Electronics

Hand soldering a 2mmx2mm DFN SMD package chip

For one of my projects i had to use the LTC3526 Boost Switching regulator chip from Linear. It is a great chip. One downside being an extremely small 2mmx2mm DFN package I never soldered a chip with this fine pitch.

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Posted in Electronics

DIY Iphone friendly NAS server with custom built wooden box

I recently finished building a NAS box to suit my media storage needs. Especially photos taken by my SLR and our iphones.  Our backup had been mostly adhoc: Using an external USB disk to store data. While the disk is

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Posted in Electronics

HexTronik 1300Kv Brushless motor rewind

I recently rewound a Hextronik 1300Kv brushless motor (HXM2730-1300), also called “blue wonder”. I rewound it to see if i can make it better. Better thrust, cleaner windings and lower current consumption. Some specs related to the motor insides… Number

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Posted in Electronics, r/c

Burning a compiled hex file for Atmega chips using Arduino avrdude command line

For my latest project i wanted to use the famous GRBL firmware that loads into an arduino and helps drive steppers with G-code as input. I had an Arduino-Uno that i wanted to use. Now the arduino IDE can be

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Posted in Electronics

ER9x mixer settings for Parkzone Stryker FQ-27

I recently found a very good deal on the Parkzone Stryker FQ-27 ultramicro flying wing. I am still a newbie at flying R/C. I bought this bird hoping i could fly it one day. Usually flying wings have only elevons

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Posted in r/c

From cardboards to castles

Another year, another Princess castle Pinata. This year was my daughter’s 5th birthday and she wanted the same Pinata i made for her the year before. However she reminded me that i need to do a better job in making

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Posted in Crafts
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