Monthly Archives: April 2016

Writing AtMegas without bootloader

http://log.liminastudio.com/itp/physical-computing/programming-an-atmega-with-no-bootloader-using-the-usbtinyisp

Successfully tested from that site:

rafael@back:/tmp/build8519228990827890160.tmp$ sudo avrdude -c usbtiny -p m328p -b 57600 -U flash:w:Blink.cpp.hex:i -U efuse:w:0x05:m -U hfuse:w:0xde:m -U lfuse:w:0xff:m

avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.00s

avrdude: Device signature = 0x1e950f
avrdude: NOTE: “flash” memory has been specified, an erase cycle will be performed
To disable this feature, specify the -D option.
avrdude: erasing chip
avrdude: reading input file “Blink.cpp.hex”
avrdude: writing flash (1030 bytes):

Writing | ################################################## | 100% 1.83s

avrdude -c usbtiny -p m328p -b 57600 -U flash:w:myProgram.cpp.hex:i -U efuse:w:0x05:m -U hfuse:w:0xde:m -U lfuse:w:0xff:m

Thanks Ted!

 

Edit (April-30-2016):

For the USBasp programmer,use the following line:

avrdude -c usbasp -p m328p -b 57600 -U flash:w:Blink.cpp.hex:i -U efuse:w:0x05:m -U hfuse:w:0xde:m -U lfuse:w:0xff:m

The mind behind Linux

The mind behind Linux

Linus Torvalds transformed technology twice — first with the Linux kernel, which helps power the Internet, and again with Git, the source code management system used by developers worldwide. In a rare interview with TED Curator Chris Anderson, Torvalds discusses with remarkable openness the personality traits that prompted his unique philosophy of work, engineering and life. “I am not a visionary, I’m an engineer,” Torvalds says. “I’m perfectly happy with all the people who are walking around and just staring at the clouds … but I’m looking at the ground, and I want to fix the pothole that’s right in front of me before I fall in.”

Text from TED.

http://www.ted.com/talks/linus_torvalds_the_mind_behind_linux?utm_source=tedcomshare&utm_medium=email&utm_campaign=tedspread

MIT turns Wi-Fi Into Indoor GPS

http://spectrum.ieee.org/tech-talk/telecom/wireless/mit-turns-wifi-into-indoor-gps

From the IEEE Spectrum article:

“Vasisht and Katabi tested Chronos on an AscTec Hummingbird quadcopter fitted with an Intel 5300 Wi-Fi card and a Go-Pro camera. The drone was set to stay 1.4 meters from a netbook, shooting photos of the computer as it moved. Chronos was able to keep the drone within just 4 cm of its programmed distance.”