Monthly Archives: February 2018

NFC v3 Reader with Arduino

Posted on February 18, 2018 by peter

Turns out there are playing cards available with NFC capability embedded in them. I’m helping a friend make an automated bridge table. The step I’m helping with in particular is reading the card inputs and pushing the information on to … Continue reading →

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Three-Robot Formation Localization

Posted on February 16, 2018 by peter

Visualizations of three-robot formation localizing using only range-only and range-bearing. I have recorded screencasts from Autodesk Fusion 360’s sketch view to help visualize the limits of the constraints. In the videos, the Hexagon represents a robot fixed at the origin … Continue reading →

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Manual Exposure Control of OpenCV Video

Posted on February 10, 2018 by peter

My experiments robot localization have been frustrated by blurry images. Blurry images have been making estimating the position of Aruco tag boards difficult with OpenCV. In my case, the camera is mounted to a moving robot that is photographing tags … Continue reading →

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Raspberry Pi Cheatsheet

Posted on February 5, 2018 by peter

Follows is a list of tips for Raspberry Pi setup and use. Direct Ethernet Connect Setup * Turn on my Mac’s Internet Sharing for the Thunderbolt Ethernet adapter. The self-assigned IP on Thunderbolt Ethernet is fine. Use arp -n -i … Continue reading →

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Book Binding Cradle

Posted on February 2, 2018 by peter

Last week my friend Amanda (Hi!) showed me how to bind a book! We used her book-binding cradle to hold folded-gathered sheets while we poked holes in the creases. Wanting one for myself, and not seeing designs in the usual places, … Continue reading →

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