Make a mini CNC drawing machine

Make a mini CNC drawing machine

For an easy plotter design that you can build with only simple hand tools, be sure to check out this tiny project from Mr Innovative. The machine features a pair of stepper and lead screw assemblies to maneuver a pen in an X/Y plane, along with a clever string and servo setup to handle retraction.

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Remote weather station gets LoRa upgrade

Remote weather station gets LoRa upgrade

After deploying a remote weather station over two years ago, self-proclaimed ugly pirate Tecwyn Twmffat needed a better wireless communication solution.

Originally, his installation used a GPRS modem to transmit data over the cellular network, and while this normally worked quite well, the module would get booted off the network during updates.

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An RFID-powered seating chart for your wedding

An RFID-powered seating chart for your wedding

Seating charts at weddings and other formal events are usually handled by small place cards, but Gabrielle Martinfortier had other plans.

For her big day, she along with help from her now-husband and friends constructed a seating arrangement on a 3’ x 4’ wood canvas, equipped with a 7” TFT display and an RFID reader.

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Mood-controlled RGB light wall

Mood-controlled RGB light wall

In the build shown below, Evan McMahon dares to ask the question, “Have you ever been disappointed by a mood ring?” While that might seem a bit random, the answer is a likely “yes” if you’ve ever worn one with the expectation of any sort of accuracy.

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Simple PID control intro device

Simple PID control intro device

You may have come across the term “PID control,” and while this proportional-integral-derivative control method does a great job of smoothing out oscillations, where does one get started? 

One solution would be Mr Innovative’s demo device, showcased in the video below.

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Stream weather conditions to the cloud!

Stream weather conditions to the cloud!

Weather reports on the news, your computer, or smartphone are very good—something that people 100 years ago could only dream of—but what if you want to know the exact weather in a fixed location from anywhere in the world? One solution would be Jakub Nagy’s excellent cloud-connected station.

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