OLED屏是一种常见的显示屏，下面以0.96寸OLED模块为例，用IIC的DMA来实现OLED屏幕的刷新。 采用DMA方式不需要程序一个个字节发送，通过启动DMA自动完成整个屏幕的刷新，可以节约大量的CPU时间。 该屏幕分辨率为128x64，每个点占用1bit，于是整个显存占用128x64/8 ...

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, ...