Part 3 – What are Card grades and why are they important?

Part 3 - What are Card grades and why are they important

Did you know that the quality differs for each SD card? Companies optimize SD Cards for price or performance which leads to different grades of SD Cards. We will discuss why different SD Card grades exist, what grades can be distinguished and why they are important. This post is the final part of a three…

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Part 2 – How does flash memory work?

How does flash memory work

The heart of any SD Card is the flash memory chip. Hence to understand why SD Card quality is not always the same we need to know how flash memory is manufactured and how it works. This post is part of a three part mini series about SD Cards with some in depth information. Content…

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CircuitPython, Adafruit Feather RP2040, and I2C

As you probably guessed by the title, this article discusses CircuitPython, the Adafruit Feather RP2040, and the I2C communication protocol. The RP2040 has two I2C controllers – good for example, when you want to run two I2C devices with the same I2C address. In my test setup, I have an Adafruit Feather RP2040 microcontroller board,…

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