➀ This article describes a DIY SOS device project that uses a GSM module to send emergency alerts; ➁ The device is designed to be small and discreet, suitable for children, the elderly, and those in need of quick assistance; ➂ The article provides detailed instructions on building the device, including components list, circuit connections, and programming.

➀ This article is the third part of a series on constructing a programmable IndusPhone; ➁ It covers topics such as extracting contacts and phone book from a SIM card, designing a calculator, and creating a dial pad for the phone project; ➂ The article is aimed at DIY enthusiasts and professionals interested in hands-on learning and electronics.

➀ This article introduces a portable power tool reference design by Microchip Technology; ➁ The design uses high-performance BLDC/PMSM motors and offers advanced features for efficiency and user safety; ➂ It includes a wide input voltage range, precise motor control, and robust connectivity.

➀ An impressive Halloween light show powered by Raspberry Pi; ➁ The project, created by G8HCB, uses over 25,000 LEDs; ➂ The light display is synchronized with music and includes animated elements like pumpkins and ghosts.

➀ The Music Bundle allows users to build their own synth and DJ mixer with components like circuit boards, screens, and speakers. ➁ The DIY set includes Jay-D DJ Mixer and Synthia for coding synthesizers, with the ability to record samples using a built-in MEMS microphone. ➂ The kit requires assembly and soldering, with a free tool pack included for the process.

➀ Discusses the safety concerns of recharging lithium-ion cells from vapes; ➁ Describes a risk-reducing strategy using a borosilicate glass cooking pot and a current-limited charger; ➂ Highlights the importance of caution and the absence of built-in safety circuits in these cells.

➀ The author needed a wall mount for a 15.6in portable monitor and struggled to find a suitable one for VESA 75. ➁ The solution came from printing a custom mount using a 3D printer. ➂ The design process took about two hours, and the mount is made of PETg with a 2mm shell and 30% infill. It holds the monitor securely.

➀ Arrow Electronics showcased a range of tools, technologies, and kits at the 2024 Hannover Maker Faire; ➁ These offerings were aimed at fostering development within the maker community; ➂ The event aimed to support innovation and creativity among makers.

➀ Introducing the diyPresso One, a customizable espresso machine kit; ➁ The device is priced at €1,250 and features adjustable settings for pressure, temperature, and extraction time; ➂ The machine uses an Arduino MKR WiFi 1010 board for control and offers the ability to save personalized profiles for the perfect espresso.

➀ The article discusses a modern 3D-printed table loom designed by [Fraens], featuring eight shafts for complex weaving patterns. ➁ This loom simplifies traditional weaving techniques, allowing users to experiment with various colors and sequences. ➂ [Fraens] provides detailed instructions and a video tutorial on adapting larger loom patterns to this compact model.

➀ Users discuss the feasibility and cost-effectiveness of building a gaming laptop using desktop components. ➁ Suggestions include using old Clevo laptops, MXM graphics cards, and custom heatsinks. ➂ There is a call for a standardized motherboard format for DIY gaming laptops.

➀ Learn how to combine a Raspberry Pi 5 with Windows 11 to create a mini PC. ➁ Follow detailed instructions for installing Windows 11 on the Raspberry Pi 5. ➂ Understand the benefits and potential uses of running Windows 11 on a Raspberry Pi.

➀ A DIY presence sensor kit using a millimeter wave sensor for motion tracking and heart rate monitoring. ➁ The sensor can detect up to three people and includes an environmental sensor. ➂ The project uses an ESP32 for processing and a 3D-printed case for assembly.

➀ Russell Eveleigh's Zero Pairs project uses a Raspberry Pi to visually explain negative numbers through a display of rotating balls. ➁ The project includes a web-based interface for inputting equations and adjusting settings. ➂ The project is open source, allowing educators and enthusiasts to explore and modify the code.

❶ A YouTuber, Hyperspace Pirate, demonstrated how to create liquid nitrogen (LN2) using components from refrigerators and air conditioning units. ❷ The homemade cryocooler produced 130cc of LN2 per hour, costing around $1.29 per liter, compared to $5 per liter if bought commercially. ❸ The project was mainly for fun and experimentation, using LN2 to freeze and shatter objects, and to demonstrate superconducting properties with YBCO.