This post describes how to connect the 2.7″ ePaper display development module from Embedded Artists to the ESP8266. ePapers are very interesting in the IoT field since they only require power during the update. Depending on the type of display they can then maintain the image while the connect micro controller goes back to sleep. .....

There are many applications for distance measuring: in robotic as a cheap way to sense the environment and detect obstacles, in IoT applications to measure fill levels of containers containing food and in alarm systems to detect intruders – to name just a few. .....

  The ESP8266 is all about Internet of Things, right? So lets start sensing something in the real world! What about (human) presence in your apartment? There are various ways to do that but one of the most common type is sensing with pyro electric sensors which also called passive infrared (PIR) sensors (see Wikipedia). The one I am presenting in this post is also a PIR sensor; a really tiny one.....

Almost 20 years ago when I studied a few semesters of electrical engineering at the famous ETH in Zurich I had a lecture about the basics of digital electronics. And I remember the professor doing many practical demonstrations such as drilling holes into a CD to show the quality of error correction in different price categories of CD players. I also remember that he talked about tiny and cost efficient GPS receivers that soon would be part of every cell phone (remember, 20 years ago the real .....