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Jim Shank
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RPi GPS/NTP for Dashcam System
This is more notes for my future self in case I ever have to get ntp working using a gps time source. The biggest lesson was to wait for a few minutes before giving up on ntp getting the GPS signal. This is for an Adafruit Ultimate GPS on my Raspberry Pi 2....

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Need some help with settings in my plugin. I'm getting "Error while jsonifying settings" since I'm using a list of class instances to store some rules. Relevant code at http://pastebin.com/cipFDnW5

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Printing flexible filament opens a world of project possibilities including bike handles, control buttons and phone cases. Flexion is a special extruder that installs on my 3D printer to allow printing this challenging filament.

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Upgrading my 3D printer with an all metal hotend which allows printing of higher temperature plastics like PETG and nylon.

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Here's how you tune the stepper motors on a 3d printer.

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More 3D printing fun. Here's how to better control temperatures on your Wanhao Duplicator i3 V2, Monoprice Maker Select and Cocoon Create.

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I've gotten into 3D printing to the point that I'm modifying my own 3d printer. This was a complicated foray into rewiring the control board for better temperature control.

I've integrated a 4-channel relay into my Pi running OctoPi (Controlling-a-relay-board-from-your-RPi). It works! Is there any way to automate the powering off the printer 10-min after a job is finished?

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Micro-USB Powered Dog Feeder
I'm not a huge fan of stationary devices that require batteries to operate. I've had 2  Aspen Le Bistro Portion-Control Automatic Pet Feeders  since February of 2015 and they've performed very well. The only problem is that when the batteries get low, they ...

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My poor dog. Anyone run into dog allergies that cause this?
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