keyboarddevelopmentcue2keysAug 2, 2025, 9:57 AMCue2Keys History: Development Start to Initial Sales (Part 2)This article introduces the development of "Cue2Keys," covering the period from prototypes to the first production version, detailing the trial-and-error process and design details at each stage. This Part 2 article contains detailed development history of each module.
keyboarddevelopmentAug 2, 2025, 9:55 AMHistory of Cue2Keys: From Development Start to Post-Launch (Part 1)This article introduces the development of "Cue2Keys," covering the trial-and-error process and design details from prototype to the first product version. This first part summarizes the overall story including motivation and concepts.
development3DprinterApr 28, 2025, 10:02 AMBambu Lab H2D Combo Review (1) Overview and Comparison with A1 miniI purchased Bambu Lab's latest 3D printer, the H2D Combo. In this article, I'd like to share my motivation for buying the H2D and my review of the product. I plan to cover the printing details separately after trying various things.
keyboarddevelopmentApr 3, 2025, 7:13 AMI Participated in Keyket 2025I participated in Keyket 2025 and distributed my custom keyboard, "Cue2Keys". This article describes the event day, the efforts leading up to it, and future prospects.
keyboard,developmentMar 15, 2025, 8:15 AMKeyket 2025 Product LineupAt Keyket 2025, held on 3/22, I will be selling the custom keyboard "Cue2Keys". This page lists the products and related information.
keyboarddevelopmentAug 9, 2024, 10:39 AMRunning I2C on Pro Micro (4) - TRRS ConnectionIn the fourth installment of the series, we modify the setup to connect breadboards using a TRRS cable. This allows connecting breadboards at separate locations, increasing independence and streamlining the wiring.
developmentAug 4, 2024, 10:35 AMWebsite Renewal - Background and DesignI have renewed the esplo.net website. The themes of this renewal are "original design", "multilingual support", and "portability". I consolidated articles and created items in one place, and achieved multilingual support by managing articles in Markdown. In terms of design, I adopted a candy-like color scheme and made efforts to change the impression while maintaining readability.
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.
