Passive buzzer is a cheap and simple DC powered element able to generate a multi tone sound if triggered with low voltage current. Passive buzzer differs from active buzzer because active one has an internal oscillator able to generate sound when simply activated with a continuous trigger. Passive buzzer, instead, needs a square wave trigger […]
Use Passive Buzzer with Raspberry PI and Python Read More »
A photoresistor (also known as photocell) is a Light Dependent Resistor (LDR). As the name suggests, these components act just like a resistor, changing their resistance in response to how much light is falling on it. Usually, photoresistors have a very high resistance in near darkness and very low resistance in bright light. This component
Using Photoresistor From Raspberry PI To Detect Light Read More »
Ultrasonic Sensors are great for all kind of projects that need distance measurements, avoiding obstacles as example. The HC-SR04 is inexpensive and easy to use and can be easily connected with a Raspberry PI Ultrasonic sensor module HC-SR04 provides 2cm-400cm non-contact measurement function, the ranging accuracy can reach to 3mm. The basic principle of work:
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4 Digit 7 Segment Display is a simple electronic display, similar to Single 7 segment display, but composed of 4 digits than can show at the same time 4 chars. It also has dot leds, but in different confiurations (single for each digit, central colon, etc). 4 digit 7 segment display is widely known and
How to control a 4 digit 7 Segment Display from Raspberry PI with Python Read More »
In this tutorial, I’m going to show you how to connect and configure a 7-segment display with a Raspberry PI. If you are searching for “4 digit-7 segment display” guide, you may be interested in my 4 Digit diplay tutorial. A 7-segment display is a simple electronic display composed of 7 (surprise) LEDs. It is
Control a 7 Segment Display from Raspberry PI with Python Read More »
In this tutorial I will guide you in configuring your Raspberry Pi weather station to collect temperature data from Arduino (with DHT11 sensor) and send data with Blynk server to your smartphone app, getting warnings on thresholds overcoming. One of most common electronics projects is creating a Weather Station also able to send temperature and
Weather Station with Arduino, Blynk and Raspberry PI OS Lite on Raspberry PI Zero W Read More »
In this guide I’ll show you how to connect your Raspberry PI to a serial USB port and read its values with Python from terminal (without Desktop environment). For this purpose, we’ll use Pyserial and its terminal tool. Raspberry PI can be used to interface real world from its GPIO as, for example, by Controlling
Reading a serial USB port from Rasperry PI OS Lite with python (from terminal) Read More »
