Reviews MakerHawk USB 150W Load Tester - Review and Battery-Power Mod I ordered this MakerHawk USB load tester a few months ago. For the price it packs a punch, but comes up short on the accuracy of voltage readings. I modded it to run on a single 18650 Li-ion battery, making it a much more portable and easy to use tool.
Arduino Homemade Battery-Powered Alexa Smart Speaker Using a disassembled Echo Flex device, I made a portable, wireless smart speaker with an integrated phone charger. Aside from being a fun project, it is cool to have a powerful speaker that just integrates with the rest of my Alexa devices.
Electronics DIY Gigabit 802.3at PoE+ Splitter: Schematic and Build Guide Making a 802.3at Power over Ethernet (PoE+) splitter using through-hole components and a controller IC. Schematic and build guide - this is a great way to learn about how Power over Ethernet powered devices (PDs) work.
Electronics Read the Datasheet! How to use datasheets and select the right component for your circuit Guide to reading and understanding components (ICs, resistors, MOSFETs, capacitors) datasheets. There is a ton of information that you are missing if you don't dive into datasheets!
Arduino 5V vs 3.3V: Which is better for Arduino? Logic level and operating voltage for Beginners When working with Arduino Microcontrollers or Raspberry Pi boards, which voltage should you use your components? What is the difference between logic level and operating voltage? Let's walk through a beginner's guide to voltage levels in arduino projects.
Electronics DIY Gigabit Passive PoE Splitter - Sharing data signal and power on the same wires I build a homemade PoE splitter that supports Gigabit connectivity. It's a little more complex than the more simple PoE splitter that uses only spare wire pairs. Overall, it was a great opportunity to learn more about PoE.
Arduino Soldering tiny (SOIC/SO) surface mount ICs in DIY projects You can use any SOIC chip in your DIY project without any special equipment. All you need is a cheap breakout PCB and regular soldering iron!
Arduino DIY Peloton: Cadence and Resistance Sensors, Speakers - Powered by Raspberry Pi Pico DIY Peloton project - created a smart exercise bike with cadence and resistance sensors and a built-in speaker. Powered by a Raspberry Pi Pico
Electronics DIY Passive PoE Splitter with Integrated DC Buck Convertor I made a passive PoE (Power-over-Ethernet) splitter/adapter to power my Ring base station. It has an integrated convertor that is integrated into the cable.
Electronics Upgrading 18650 Lithium Battery Cells on a Dyson V7 Animal Vacuum Guide to replacing Li-ion battery cells on a Dyson V7 Animal Vacuum. I replaced the 6 1850 2000 mAH cells with 3500 mAH LG cells, a 75% increase in capacity.
Electronics Raspberry Pi Pico Neopixel Controller w/ Motion Detection Trigger Guide to making a ws2821b LED controller triggered by an infrared motion detector. This is powered by a Raspberry Pi Pico Microcontroller running micropython. Build details and guide + schematic.
Electronics Raspberry Pi 4B All-in-one Kids' Computer Part 2 I build a custom all-in-one kids computer based on a Sceptre 20" monitor and Raspberry Pi 4B SBC. It was a really fun project and I was able to end up with a clean look and only a single cable needed to power and operate it.
Electronics Raspberry Pi Pico: First Impressions This MCU board is Raspberry's entry into the microcontroller game. I managed to get a few boards the day after the release and got a chance to solder on some pin headers and try to run some code on it.
Electronics Custom All-in-One PC Part 1: Disassemble and Paint Sceptre Monitor How to disassemble a Sceptre 20" LCD monitor to custom paint it purple using spray paint.
