Draw on bottles using a CNC plotter made from old printer rollers and other scraps

To label used bottles that would otherwise go to waste, “tuenhidiy” created a CNC plotter that itself consists mostly of scraps!

The machine’s X and Z axes are formed out of a pair of old CD/DVD players, but instead of a traditional Y axis, it actuates two printer rollers to turn a bottle forwards or backwards. This allows the marking pen to be placed in just the right axial position, while still being very similar to a fully Cartesian (XYZ) plotter controls-wise.

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Robin Grosset Takes a RaspberryPi Pico’s RP2040 to New Heights with an Overclock to 420MHz

Impressive overclock boosts the RP2040’s Arm cores to more than three times their official upper limit of 133MHz.

Engineer Robin Grosset has pushed a Raspberry Pi Pico and its RP2040 microcontroller to its limits, successfully overclocking the chip from its stock 133MHz to an impressive 420MHz.

Launched earlier this year the Raspberry Pi Pico development board plays host to Raspberry Pi’s first in-house silicon, the RP2040 microcontroller. Officially, the chip can be clocked at speeds of up to 133MHz — but unofficially the part can run considerably quicker, as is often required to get the best performance out of hacks like turning one into a fully-functional BBC Micro emulator.

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Detecting Pokemon on an Arduino using TinyML and TensorFlow

Using colors to predict whether this is Pikachu or Bulbasaur…

The deployment environments of a machine learning (ML) model are changing. In recent years, we went from locally training models and running them on standalone scripts to deploying them in massive and specialized setups. However, the industry hasn’t been focusing only on large-scaled-productionized ML, but also its small, portable, and accessible counterpart—for machine learning has found a place in embedded systems.

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Controlling a ESP8266 with Alexa

Here is an easy project using a Echo Dot (Alexa) to control my ESP8266. I give it simple commands (Alexa, lights, off) and the command shows on the LCD screen attached to the ESP8266. Actual relays will be the next step to attach.

The project is based on the Adafruit tutorial at https://learn.adafruit.com/easy-alexa-or-echo-control-of-your-esp8266-huzzah/overview

with LCD and other modifications made by me. My code is found at https://pastebin.com/NjMcsTRh

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1000s Of Steam Games Now Let You Play With People Who Don’t Even Have Steam Accounts

An update to Steam released earlier this week has, tucked away in its changelog, a very cool piece of news: if you’re playing a game that supports Remote Play Together, you can now invite anyone to play with you, even if they don’t have a Steam account.

This won’t work for all Steam games, only those that support Remote Play Together. But if the game you’re playing doesand there are a lot of them, from Overcooked to Enter The Gungeon to Spelunky to the LEGO games—then only one person has to own the game on Steam. Everyone else they invite only has to click on their invite and they can get playing.

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Kids Light Up Clock 2.0

The first version of my Light Up Clock for Kids I published a few years ago. At the time my wife and I were going crazy with our young kids (between 2 and 4 years old) who could not understand how to “wait for the 7” on the clock before coming in and waking us up early in the morning! Now the youngest (the 4th and hopefully the last) is 3 years old and this clock has been life-saving the last few years! Enhanced over time, it has provided a HUGE solution to our “child-waking-us-up-at-insane-hours-of-the-morning” problem!!!

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