The video covers using PIR (Passive InfraRed) sensors with an Arduino. These are simple movement sensors and although libraries are available they are not required to work with these devices. The sample code shown in the video is shown below.
This project will allow an ESP32 to access online weather forecasts for display on an E-Paper display, running on batteries with an always on display. Cheap Lithium Ion batteries will give around 1.5 to 2 weeks service, better quality or better capacity will give you potentially several weeks. The video […]
The BME280 based pressure and temperature sensors have an amazing accuracy for their price point (around 5USD, 5Euro, 5GBP or cheaper!) and they are incredibly easy to connect up and use. Both I²C or SPI busses are usually supported. Below is the one similar to those that are readily available. […]
The BMP280 based pressure and temperature sensors have an amazing accuracy for their price point (around 1$USD, 1Euro, 1GBP or cheaper!) and they are incredibly easy to connect up and use. Both I²C or SPI busses are usually supported. Below is the one similar to those that are readily available. […]
This version fixes some bugs and adds an additional master volume option. Most of this work is courtesy of two subscribers. One of which did some significant bug fixes, especially on making the library work whilst writing to EEPROM. I only fixed one minor bug. But they don’t want any […]
E-Paper (or E-Ink) displays are remarkable devices. They require very little power when up-dating and no power at all once updated. The also provide a paper like contrast and clarity. Which is why they were adopted by e-readers a long time ago. Here we look at hooking them up to ESP32’s.
This article should be used in conjunction with the video below; In this article you will discover how to get your ESP32 to monitor and report on it’s own battery level. Handy for battery powered projects. All your require are two resistors (anything from 1K upwards, I generally use 10K). […]
If you haven’t read the previous article (part 1) then I suggest you follow this link otherwise this write-up won’t be of much use! In the last article we got the screen and the MAX30100 pulse/oximeter up and working. In this one we’re going to add everything else! A video […]
This article supports a video on the build of the Star Trek Sick Bay project (external you tube link). You should watch that video as well as this article as it contains information not mentioned below. This is part one of a two part write up. Doing all this on […]
A build of a working original Star Trek display with real sampled heart beat sound. Uses various sensors to get the readings from your body (via just your fingers) and displays them in the style of the 60’s sick bay screen. This bare “Bones” system could be built into a […]
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