keyboarddevelopmentMay 7, 2024, 11:16 AMHow to Get Kailh Key Sockets (Online Shopping Comparison)We compare methods for purchasing Kailh KeySwitch Sockets, which allow for replaceable switches in mechanical keyboards. For users living in Japan, we compare prices and shipping costs for MX-compatible sockets to find the most cost-effective purchasing method.
keyboarddevelopmentApr 28, 2024, 2:39 PMRunning I2C on Pro Micro (3) - Determining Pin StatesIn the third article of the series on running I2C on Pro Micro, we explain how to receive the state of I2C devices and determine if a button is pressed at a specific address. We interpret the MCP23017 datasheet, detail the wiring and programming steps to check pin states, and introduce implementation methods using the Arduino standard library and Adafruit's library.
keyboarddevelopmentApr 23, 2024, 2:14 PMRunning I2C on Pro Micro (2) - I2C ConnectionThis article explains how to perform I2C communication with Pro Micro. It covers the basics of I2C, communication speeds and standards, connection methods, the I2C module used (MCP23017), required parts, wiring methods, and how to create an I2C Scanner program.
keyboarddevelopmentApr 12, 2024, 4:45 AMRunning I2C on Pro Micro (1) - Setting up Pro MicroThis article explains the setup procedure for Pro Micro, including wiring on a breadboard, programming using Arduino IDE, and how to verify operation. The components used include a breadboard, Pro Micro + pin headers, reset switch, jumper wires, and a cable to connect Pro Micro to PC. It also covers the types of Pro Micro, pin assignments, and Arduino IDE configuration.
keyboarddevelopmentFeb 29, 2024, 9:25 AMQMK Introduction: Running meishi Trackball Module with Custom FirmwareI'll introduce how to run meishi Trackball Module with custom firmware using QMK. I'll progress through the development of a custom keyboard, covering specific steps including solutions for trackball angle issues, QMK compilation error countermeasures, firmware configuration, and custom key implementation.
developmentFeb 5, 2024, 3:22 PMWindows 11 Setup NotesThere were a few features I wanted to try, and with the announcement that Windows 10 support would end in October 2025, I finally decided to upgrade my Desktop PC to Windows 11. I reviewed various settings during this process, so I'm making notes on potentially useful features, including some older ones.
reviewbookJan 27, 2024, 8:16 AMSummary of Recently Read BooksI've read various books recently, so I'm summarizing ones that might be of general interest as a reminder. I'll add a brief comment, but if there's a lot to write, I plan to summarize in separate articles as needed.
reviewbookJan 24, 2024, 8:04 AM[Reading Notes] For Those Who Always "Don't Have Time": The Behavioral Economics of ScarcityThis is a review of the book that unravels the effects of "scarcity". It uses abundant real-world examples to illustrate how significant the impact of familiar scarcities, such as lack of time or money, can be.
moneyDec 4, 2022, 9:39 AM2023 Edition: Research on Smartphone Tax Payment and Scalable Methods for Paying Income TaxI researched smartphone tax payment and scalable methods for paying income tax in the 2023 edition. This article explains in detail the specifications of smartphone app payments, how to use Amazon Pay and credit cards, and the rate of point returns.
moneyOct 29, 2022, 2:50 PMBecoming Able to Calculate the Furusato Nozei Limit on Your OwnI have summarized the knowledge needed to calculate the Furusato Nozei limit on your own. I explain the calculation methods for income tax and resident tax, the mechanisms of basic deduction and employment income deduction, taxation on stocks and futures, and demonstrate the calculation method through specific examples.
