Each I2C bus requires one pin for the SDA line and one for the SCL line. Depending on the board and library implementation, we can either use pre-configured instances of the Wire library or we need to ...

だいぶ前に買ったArduino UNOなので、バージョンとかそういうのがあるのかもよくわかりませんが、ピンアサインについて調べてみました。 と言っていたら、やっぱりバージョン？Revision？は必要になりそうなので、まずはバージョンから調べてみました。

Is there a method to set SDA and SCL pins for Wire to use in this library? I have a custom PCB and need to set the SDA and SCL pins to use on an ESP32.

Adafruit has this week announced the arrival of the new Arduino compatible TCA9548A I2C Multiplexer to their online shop, which is now available to purchase priced at $6.95. The latest breakout board ...

A while ago I received a couple of I/O port expander modules that use the I 2 C protocol. Using that Chinese module, you can use only the SDA and SCL pins of your ...

This articles describes how you can use I2C (TWI) communication, Arduino and temperature sensors to measure 3 different temperatures. It can be very helpful when you want to measure the outside, ...

ESP8266 を初めて触る時に多くの人がつまずくポイントがある。 「D1 と D2 が SCL / SDA」という情報を見ても、 なぜそうなるのか が理解しづらい。 この記事では、その理由と仕組みを整理する。 🧩 1. まず結論：ESP8266 の I²C は ソフトウェアで自由に割り当て ...

The I2C (Inter-Integrated Circuit) bus is a synchronous serial communication protocol that allows multiple electronic components (sensors, displays, memories, etc.) to be connected within the same ...