Kazulog | Page 4 | Gruffly describes topics related to entrepreneurship, development, and IT

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ESP32 + I2S microphone (INMP441) to implement speech recognition

Implement speech recognition using ESP32 and INMP441. This time, we only want to quickly verify if the signal is being processed from the I2S microphone, so we will do up to “Receive signal from I2S microphone → Display volume level and sample statistics in real time”.

Development/Designbuilt-in(C++)

React Native: Components, JSX, Props, State

React Native is a framework for developing mobile apps in JavaScript (or TypeScript), enabling development of apps for both iOS and Android with a single code base (cross-platform development).

2025.01.01 2025.01.02

Development/DesignWebapplication(Flutter)

Difference between PDM microphones and I2S: Why does PDM require a decimation filter?

A PDM microphone is a digital microphone that expresses audio signals as a density of pulses. The converted signal consists of “high-density ones and zeros” and includes high-frequency components that exceed the human audible range (20 Hz to 20 kHz). On the other hand, I2S microphones transmit voice data in PCM format

Development/Designelectronic circuit

What is the difference between the O Series and GPT models, and what are the features of O3?

On December 20 (local time), OpenAI of the US announced a new AI model, o3. It is said to have the ability to solve complex problems and perform well in a wide range of fields, including science, mathematics, and coding. o3 mini will be available around the end of January 2025, followed by o3.

AIDevelopment/Design

[GAS] How to post the content entered in a Google Form to a specific channel in Slack.

Using GAS and the Slack API to set up automatic forwarding of submissions to Slack when submitting Google Forms; need to create a Slack app from the Slack API admin page to get the webhook URL.

Development/Design

Requesting Apple to Repair a Failed Mac Port: Quick Response and 4-Day Resurrection Experience

Apple's repair process was fast and straightforward. Apart from disabling "Find My Mac" and turning off FileVault, there were no complicated steps. The pickup process was hassle-free, and being able to track the repair status online was incredibly convenient.

Note/Booklifehack

[Mia] How to use Google Calendar API with Go: From Refresh Token to Event Acquisition

The Google API does not allow direct use of refresh_token to access the API. Instead, you must use refresh_token to issue a temporary access_token and send a request to the API using this token.

Development/DesignServer (Go/Rails)

[Mia] Implementation of Google Calendar API access utilizing Auth Code and Refresh Token (Go and Flutter)

To manage access to the Google Calendar API more securely and efficiently, instead of using access tokens directly on the app side, we have changed the mechanism to send an authentication code (Auth Code) to the backend, generate and store a refresh token, and use that refresh token to access the Changed to a mechanism to access Google Calendar API.

Development/DesignServer (Go/Rails)application(Flutter)

“Sisters In Yellow” by Mieko Kawakami: People Shaken by the Chaos of the 1990s and the Nature of Life

Mieko Kawakami's “The Yellow House” is a work that highlights the nature of “difficulties in living” by depicting poverty, crime, and relationships with pseudo-families in the historical background of 1990s Tokyo. Through this story, we witness the structural problems of society and the desperate individuals caught up in them. Below are some of the points that particularly impressed me.

[Mia] How to access Google Calendar from the Flutter application and display the day’s appointments in the console.

Thorough explanation of how to implement Google Calendar integration in Flutter apps, from setting up authentication flow using Google Sign-In, to acquiring events using Google Calendar API, setting scope, and detailed OAuth 2.0 procedures.

Development/Designapplication(Flutter)

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