I love this tweet so much I wanted to save it to refer to and share: Like many writers, I have rituals. Before writing, I pour coffee, open the window by my desk, and attempt to read the entire internet.
Continue readingCurrent Sensing with the ACS712 Hall Effect Sensor
After a conversation with JD Warren, one of authors of the excellent Arduino Robotics book, I decided to try the ACS712 hall effect current sensor. I soldered one to a surface mount to breadboard adapters and plugged it in with
Continue readingDigital signal processing and filtering – motor current sensing
After a recent post on current sensing, I talked to a couple of friends at NYC Resistor (my usual sounding board) and got some great advice (as usual). One thing I didn’t remember was the difference between passive and active
Continue readingLamest 1 in 1 ever: Multiple PC Cleanup
So I’m teaching and participating in ITP Camp this month, and one thing on the schedule for today is a 1 in 1: Start and complete a creative project in 24 hours (you don’t need to work on it through
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Hacking the MET
In a nice departure from a normal week day, I got to accompany the Makerbot team to the Metropolitan Museum of Art yesterday for their “3-D Scanning and Printing Hackathon” event. We used 123D Catch to grab scans of some
Continue readingHigh resolution Arduino map function
In my last post, I talked about sensing the current of the motors in a robotic arm, which was a necessary step in determining energy consumption for the robot. But in order to calculate the energy being used by each
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