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Development/Design

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Development/Design

[ESP32] Electronic circuit of the self-made board that can also be driven by LiPo battery

Describes the process of creating a home-made ESP32 board that can support both USB Type-C and LiPo batteries. The charging current is regulated by PROG and the voltage regulator is switched from AMS1117 to ME6211 series; an automatic switching circuit is implemented using PMOSFETs.
2023.12.16 2024.06.19
Development/Designelectronic circuit
Development/Design

[Flutter] Display daily GIF images and text on the top screen.

When you use images and other assets in your Flutter project, you need to let Flutter know about them by putting them in pubspec.yaml. Put GIF images under assets/images and put them in pubspec.yaml.
2024.04.29 2024.06.17
Development/Design
Development/Design

[Firebase] Solution to the problem of email verified not being false when changing email addresses.

Trying to resolve an error where a user can change his/her email address without email verification if the user wants to change his/her email address once the user has authenticated with Firebase. By the way, user.emailVerified is useless when changing email addresses.
2024.06.16
Development/Design
Development/Design

[X(Twitter) bot] How to create an X Bot that automatically posts from a spreadsheet in GAS: (2) Text

How to use GAS to automatically post text from a spreadsheet to Twitter, using Twitter API v2 and OAuth2.0. Includes a workaround for GAS scripts that post thousands of lines of text and cause runtime errors.
2023.09.18 2024.06.16
Development/Design
Development/Design

[X(Twitter) bot] How to create an X Bot that automatically posts from a spreadsheet in GAS: (1) Preparation

Register a Twitter developer account, get Client ID and Secret, set User authentication, create twitter authentication in GAS, add OAuth2 library, and create code for Twitter API authentication process.
2023.09.14 2024.06.16
Development/DesignWeb
Development/Design

[Protobuf] How Varint encoding works and the importance of field numbers

Protocol Buffers (protobufs) are a structured data serialisation format, developed by Google. protobufs serialise data more efficiently than XML or JSON, with smaller message sizes and faster parsing. Protobuf is a structured data serialisation format developed by Google.
2024.05.19 2024.06.15
Development/Design
Development/Design

[X(Twitter) bot] How to create an X Bot that automatically posts from a spreadsheet in GAS: (3) Posting text + images

Learn how to use GAS (Google App Script) to automatically post images from a spreadsheet to Twitter; as of September 2023, Twitter API v2 does not support image uploads, so OAuth 1.0a must be used.
2023.09.18 2024.06.14
Development/Design
Design (Figma)

[Figma] After using the comment note, the screen became easier to read and manage status.

Figma's comment function is not very listable as it is a balloon pop-up; Figma's comment note is simple and excellent for keeping a list of comments, as well as managing time stamps and status. The comment design is also pretty and easy to use.
2023.11.27 2024.06.14
Design (Figma)Development/Design
Development/Design

[Design] How to create and unify icon guidelines: Font Awesome, Material Icons, React Icons

When developing cross-platform (web and apps), icon guidelines may not be set in stone due to historical history and resource priorities. Well-known icon fonts include Font Awesome and Material Fonts.
2024.04.30 2024.06.13
Development/Design
Development/Design

[Go x FCM] Implemented a function to send push notifications to FCM on a regular basis: Server Edition

Implement a function to send Push notifications from the server to FCM at regular times in Go language.The following four arguments are required to implement Push notifications to FCM: OAuth 2.0 token (Authorisation in the HTTP request header), FCM token of the device, title and body.
2024.05.04 2024.06.13
Development/Design
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