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January 5, 2013
News - Enginursday: This is why …
about a year ago
Experience is the ability to recognize that you’ve made this same mistake before.
about 2 years ago
I’m thinking these might work as mirror heaters for my telescope to get rid of condensate. Looks like they might run a little hot though. Maybe hook two in series and run them off a 9v battery with a pot. Shouldn’t be too hard to wrap a couple of these around the primary on the inside of the tube. An arduino might be a little overkill to regulate the temp though.
News - Chernobyl and the Leiger
about 2 years ago
What are the chances of putting one of these on an RC car with a simple video camera and driving it around a few of the hotter spots? Not sure if they would let you. I had heard that you couldn’t leave the main road through town at one time years ago. Also I wouldn’t count on being able to get the car back through customs so I wouldn’t get a car you couldn’t leave behind. Also keep in mind that TSA et.al. do “sniff” for radiation. Don’t know what their thresholds are but it might be worth knowing ahead of time before you get pulled aside at an airport and put on the watch list. Have fun.
Tutorial - Reinstalling your Arduino bootloader
about 3 years ago
I’m not sure if this is what I need to do or not but I have tried it nonetheless and it didn’t work and I’m not sure why. First off I have a Leonardo that Windows will not recognize anymore when I plug it into the usb port. I’ve tried multiple cables and multiple computers. All of which used to work with this board. I’ve fallen in love with the Arduino platform and I’m in the middle of a project so I went and bought me a Mega 2560 R3 to use for tinkering. Anyway I tried the procedure above (Option 1) using my Mega as the AVR programmer and I’ve still got nothing. Avrdude responded with “stk500_getsync(): not in sync: resp=0x00” after the message about “Overriding Baud Rate : 19200”. Since it seems I actually have a usb function problem and not a bootloader problem I really don’t think this will fix it since I believe I may have somehow blown the usb port of my MEGA32U4-AU chip on my Leonardo. According to the drawings I’ve seen there are no components between the chip and the usb connector. I’m curious if I were to replace the MEGA32U4-AU on my Leonardo and use this procedure (or some rendition thereof) could it work? Can it be revived into a working Leo again? BTW, skills and equipment are not an issue. 30 years in electronics but only 3 months with these neat little things. Any thoughts?
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