Raspberry Pi Clusters and Low-Cost Raspberry Pi Spectrometers

The community’s official account records the maker-related content worth sharing every week, released every Friday～

Content is open source, and contributions or recommendations of relevant content are welcome.

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There will be a one-week break during the National Day holiday, and I wish everyone a happy National Day in advance!

Images & Videos

Raspberry Pi Clusters

The author built a Raspberry Pi cluster running K3S Kubernetes. Source^[1]

PySpectrometer Spectrometer

PySpectrometer is an optical spectrometer implemented in Python (OpenCV and Tkinter). It is made using inexpensive off-the-shelf components. (Released under the Apache License)

Due to the simplicity of the hardware, anyone can replicate it.

The total cost (excluding the Raspberry Pi) is under £100. Source^[2]

Digitizing 8mm Film

An author’s relative passed away, leaving behind many 8mm films, so they created this to digitize these 8mm films. Source^[3]

Smart Coin Sorting System

Goalkeeper Training Robot

USB Game Controller to Bluetooth

Previously, community member @zoologist introduced a device that converts a USB keyboard to a Bluetooth keyboard. This time, the same design is used to convert a USB game controller to a Bluetooth game controller.

Detailed tutorials can be found on the DF Maker Community forum:https://mc.dfrobot.com.cn/thread-314222-1-1.html?fromuid=830836

Creating a Weather Station with Environmental Sensors

In recent years, temperatures have gradually risen. Especially the summer heat—the sun scorches the earth, the roads are dry and hot, and the asphalt becomes soft underfoot, almost melting, with the air filled with heat waves, making the whole world glaringly bright and suffocating.

Sometimes I wonder if Earth will still be the home for humanity in the years to come?

Recently, the weather forecast reported that many places have seen maximum temperatures exceeding 40°C, most surpassing local historical highs. It is said that the most comfortable temperature for the human body is between 19°C and 26°C, and 40°C will already feel significantly uncomfortable.

A community member @PandaStarym used a five-in-one environmental sensor that can measure temperature, humidity, pressure, ambient light, and UV to create a weather station to monitor the meteorological data of their location.

Detailed tutorials can be found on the DF Maker Community forum:https://mc.dfrobot.com.cn/thread-314131-1-1.html?fromuid=830836

News

Amazon launched dozens of home hardware last night! “Pet” robot upgraded, bedside lamp monitors sleep

Intelligent Things reported on September 29 that at 1 a.m. today, the annual event of the smart home industry—the Amazon 2022 Autumn Hardware Launch Event—came as scheduled.

Amazon released more than a dozen smart hardware devices, among which the highly anticipated home service robot Astro received two major functional updates, transforming into a pet and window and door manager, and its virtual security guard function linked with the smart camera Ring is already undergoing testing in pilot projects.

At the same time, new electronic readers Kindle Scribe, fifth-generation smart speaker Echo Dot, second-generation in-car smart speaker Echo Auto, sleep tracker Halo Rise, smart camera Ring Spotlight, Blink floodlight camera, new generation router Eero, smart TV Fire TV Omni QLED, smart remote control Fire TV, and TV box Fire TV Cube were also officially launched. Source^[4]

NASA successfully hit an asteroid 1100 kilometers away!

On September 27, humanity completed the first planetary defense exercise impact mission:

The DART (nicknamed “hit him”) spacecraft launched by NASA successfully struck an asteroid 11 million kilometers away from Earth.

Scenes that could only be seen in sci-fi movies like “Star Trek” and “Moonfall” are now truly playing out in reality.

The purpose of NASA’s exercise is also reminiscent of sci-fi films, aiming to prepare for the threat of near-Earth asteroids colliding with Earth.

After all, previous studies have shown that the “Chicxulub asteroid impact” event 65 million years ago directly led to the extinction of the dinosaurs.

DART’s impact aims to change the trajectory of the asteroid, like this:

Although the impact has been completed, whether the asteroid’s orbit has changed still needs astronomers to measure and confirm further through telescopes.

However, it is undeniable that the results of this mission will provide scientists with key data for formulating planetary defense plans.

If the asteroid’s orbit is confirmed to have changed, this technology could be used in the future to deflect asteroids that might be heading towards Earth.

Lindley Johnson, who is in charge of NASA’s project, stated:

“This is not only an exciting moment for NASA but also for space history and human history.”

This exercise is extremely important for the future of our Earth.” Source^[5]

References