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Robot3 has an IR rangefinder, one of my STM32 development boards and an xbee radio running the new ZB firmware. There's also a small motor controller board hidden inside the old battery compartment as well as a 900mAh lipo. The rear two wheels are driven by one motor which is speed controlled by a PWM output from the STM32, while the front two have another motor on a rack and pinion that steers them and is driven by a simple high or low signal from the STM32.
The car can be manually remote controlled over the xbee wireless link but automatically backs away from detected obstacles. Alternatively it can simply drive forwards until it detects an obstacle, then reverse away.
Development slowed once I got the parts for the somewhat more interesting quadcopter UAV.
Electronics factory workers, Cikarang, Indonesia © ILO/Asrian Mirza
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivs 3.0 IGO License. To view a copy of this license, visit creativecommons.org/licenses/by-nc-nd/3.0/igo/deed.en_US.
MintyBoost USB battery pack
This one is in a bigger tin than a standard MintyBoost so it can hold four AA cells. That makes it better for charging an iPhone.
Electronics factory workers, Cikarang, Indonesia © ILO/Asrian Mirza
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivs 3.0 IGO License. To view a copy of this license, visit creativecommons.org/licenses/by-nc-nd/3.0/igo/deed.en_US.
Robot3 has an IR rangefinder, one of my STM32 development boards and an xbee radio running the new ZB firmware. There's also a small motor controller board hidden inside the old battery compartment as well as a 900mAh lipo. The rear two wheels are driven by one motor which is speed controlled by a PWM output from the STM32, while the front two have another motor on a rack and pinion that steers them and is driven by a simple high or low signal from the STM32.
The car can be manually remote controlled over the xbee wireless link but automatically backs away from detected obstacles. Alternatively it can simply drive forwards until it detects an obstacle, then reverse away.
Development slowed once I got the parts for the somewhat more interesting quadcopter UAV.
■ 21일 안승권 사장 등 임직원 50명 노인복지시설 방문해 사회공헌활동 진행
■ 화면 해설, 힐링 모드 등 노약자 배려 기능이 탑재된 TV 등 가전 제품 증정
■ 내달 17일까지 손상된 옛 사진 응모하면 복원해주는 디지털 재능기부활동 전개
■ CTO 안승권 사장 “특화된 재능을 활용하는 다양한 사회공헌활동에 적극 앞장서겠다”
※ Social LG전자 (social.lge.co.kr/newsroom) 에서 관련 보도자료를 확인하실 수 있습니다.
I was all excited to get tinkering but couldn't locate my breadboard, which was last seen when I was in college, so with my fingers crossed I headed to Radio Shack. I was pretty sure they would be useless, but not only did they have a selection of breadboards, but also they also had Arduinos in stock. I am amazed.
You can see here, the table is spinning at 33 1/3 RPM as the largest dots appear stationary under the strobe.
A campuswide electronics recycling drive on April 20 and 22 allowed people to drop off old computers, phones, printers and even typewriters. Staffers from University Information Services wiped personal data from the electronics before sending them out for recycling.
Photo by: Audrey Stewart/Georgetown
These images are intended for viewing on Flickr. Any redistribution or publication must be approved by Georgetown University.
Inside of some of the modules... just quite regular looking electronics, with imported and locally made componants.
The diversity team, Collective Spark, has officially completed our transformation of the bicycle area, now known as the Spoke House! Another space completed by this team = BIG WU!! Our main goal, as a team, is to revamp common spaces around the building. We started with Planet Express; them moved to the Bridge area, and now the Spoke House.
so, japan has this law that will ban resale of used/vintage electronics (PSE law) and it is sort of about to take place starting April 06. The diet is now considering about doing some amends to the law, but anyway, people are pissed. This would mean no vintage music electronics, no old game consoles, etc. How fucked up is that?
Anyway, some interesting sites to visit:
flickr.com/photos/asobitsuchiya/sets/72057594084825908/
www.boingboing.net/2006/02/22/japan_to_ban_resale_.html
Electronics factory workers, Cikarang, Indonesia © ILO/Asrian Mirza
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivs 3.0 IGO License. To view a copy of this license, visit creativecommons.org/licenses/by-nc-nd/3.0/igo/deed.en_US.
Just the SMT transistors to add on the back. Hand soldering the TQFP AVR microcontroller was interesting.
PCB through the excellent DorkbotPDX batch PCB service (nice colour)!
This is a little switchmode power supply that takes 9-12 volts DC and kicks out somewhere between 100 to 200 volts DC. It's intended for powering nixie tubes, and a kit version is sold by LEDSales in Australia, who I assume also developed it. They were thoughtful enough to include the circuit parts list and diagram in the kit assembly instructions (pdf). I wanted a version that used surface-mount parts, so I found surface-mount equivalents to all the listed kit parts and designed a board around them.
LEDSales' board is the one used in this nifty clock by Sascha Grant.
My board here is a proof of concept to see if the surface-mount parts I chose actually work. Despite using smaller parts it's bigger in area than LEDSales' board, though lower in profile - sort of; on the other side of the board there are a few largish components. I bet with careful routing I can squash it down to a very small size, like not much bigger than a square inch.
Happily, the concept is at least partly proven. Given 12V from a wall-wart it sits there and throws out 180V with no complaints. I haven't tried loading it with anything more than a single NE2 bulb, so we'll see how it does under pressure. Its voltage tends to drift downward, so there may be something wrong with the feedback part of the circuit, though it looks like it stabilizes after a while.