Measuring light intensity is common in our everyday life. Probably everyone has an auto dimming/brightening screen feature in their smartphone. It is based precisely on measuring the light intensity around the device. The measurement is performed continuously while the phone is unlocked. Today I will focus on how we can Read more
Distance measurement is used in everyday life, for example in parking sensors in cars. For robots, distance sensors help them survive a thicket of obstacles, e.g., so that a drone doesn’t smash its propellers against a pole or a wall. Let’s take a look at a very cheap HC-SR04 ultrasonic rangefinder – how it works and how to use it optimally.
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Winter is approaching, so the media will once again be loud about the smog prevailing over Poland. Moreover, the authorities probably have no intention of moving away from coal, so we have to cope with pollution somehow. As a result, air quality sensors have become popular in recent years, and today I’ll be looking at one of them.
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We have reached the end of the series on WS2812B addressable LEDs. At least for now. In this part, I will discuss splitting an LED strip into fully configurable and independent segments. This means that each segment can operate in a different mode, at a different speed, and have a different length. This gives huge possibilities to tailor it to your needs. Let’s go!
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Have you ever seen on some forum or social media group how “high-ranking” programmers forbid using float? Have you noticed that none of them explains why? Just because! That’s it. Why is using float for some people as bad as killing small animals? Let’s find out!
(more…)Recently I wrote about how to drive WS2812B LEDs with STM32. However, control alone is not enough to fully enjoy the possibilities offered by entire strips of these LEDs. Today I will present a library containing a range of interesting lighting effects. Let’s get to work!
(more…)Inevitably, the time is coming when a red truck will roll out of the TV, and at every turn we’ll hear a beautiful song about a broken heart that the community considers the creation of a holiday mood. Yes, Christmas is coming soon and, of course, there are no holidays without
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Ask anywhere which temperature sensor to use and the answer you’ll most often get is DS18B20. Dallas’s chip is extremely popular. You can also buy a waterproof version in stores, which further strengthens its popularity. Obviously, I couldn’t miss this sensor.
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I might be repeating myself, but ST’s kits are great. With every board we get a fully functional ST-Link programmer. Well, almost fully, but it covers 100% of the needs of the microcontroller mounted in the kits. Do you know all its functionalities? I could bet you don’t
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In the previous post I dealt with the popular pressure and temperature sensor BMP180, which is already going out of production. Today I’ll check its younger brothers – the BMP280, which measures temperature and pressure as well, and the BME280, which can additionally check how humid the…
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