21st Century Learning and Teaching

Ultrasonic Rangefinder with Processing
Obstacle distance is measured using ultrasonic sensor and Arduino. The data is processed using Processing and the distance is marked.

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This tutorial shows how to use the I2C LCD (Liquid Crystal Display) with the ESP32 using Arduino IDE. We’ll show you how to wire the display, install the library and try sample code to write text on the LCD: static text, and scroll long messages. You can also use this guide with the ESP8266.

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https://www.scoop.it/t/21st-century-learning-and-teaching/?&tag=I2C

https://www.scoop.it/t/21st-century-learning-and-teaching/?&tag=LCD

http://blog.mklec.com/how-to-use-iici2c-serial-interface-module-for-1602-lcd-display/

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ONLY 3 WIRES!!

This post is about the WS2812B LED strip, which is an addressable RGB LED strip. The information in this post also works with other similar LED strips, such as strips of the WS28XX family, Neopixel strip and others.

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This tutorial demonstrates how to use our FC-113 IIC/I2C Serial Interface Adapter Module For 1602 LCD Display.  These serial interface modules simplifies connecting an Arduino to a 1602 Liquid Crystal display using only 4 wires.  This module uses the PCF8574T IC chip.

TIP for those WHO bought <===> https://www.amazon.de/dp/B079T1BW6T/  on #Amazon <==> from #AZDelivery: The #I2CAddress which I got delivered was "0x3F" and NOT "0x27, 0x38"!!; Check the I2C Address with this #Sketch <===> https://playground.arduino.cc/Main/I2cScanner  <===> SDA <==> PIN 4 / SCL <==> PIN 5 on Arduino

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In this Arduino Tutorial we will learn how a PIR Sensor works and how to use it with the Arduino Board for detecting motion. You can watch the following video or read the written tutorial below.

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We were already playing around with a 2.8 inch TFT Display and SDCard recently in a previous tutorial <===> First Steps with the Arduino-UNO R3 | Maker, MakerED, Coding | 2.8″ TFT Touch Screen with SDCard <===> and we will create a badge. 

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We were already playing around with LED MATRIX for time and temperature display with a Wi-Fi connection on an ESP8266, but we didn't create yet a project with an RTC (Real Time Clock) module and an 1.8 inch TFT display; here we go. We…

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Arduino OLED Voltage Meter is a simple code that i wrote to read analog input and convert in to voltage and show up on OLED Display this device can be use to check...

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Bitmaps & Code by Leslie Birch

Time to create two image files and convert them into a code the OLED can understand.

Use Photoshop or another imaging program to create two cameo profile pics and turn them into bitmaps (.bmp). They should be monologue and 128x64 pixels. Notice I had my images each facing another direction.

Download LCD Image Converter and run.

Choose New Image and create a name. Then hit enter.
Now choose Image and Import. Select the file.
Now choose Options and Conversion, then Prepare. The followiing should be checked: Type:  Monochrome, Threshold Dither, Main Scan Direction: Left to Right, Line Scan Direction: Forward 
Now select Image. Make sure Select to Rows is checked. 8-Bit and Little Endian.

Hit OK, then File, Convert. Name the file. Now do the same process for your other file. The completed files will contain a series of code that you need to cut and paste into the project code to replace the files I provided. It will look something like this, only longer. Note that you don't need the beginning name, just the brackets and what is contained within them...

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NeuroBytes are hands-on electronic neuron simulators that allow students, makers, and tinkerers to learn about the brain while physically building their own neural circuits, synapse by synapse.

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Adding sounds or music to our project will always make it looks cool and sounds much more attractive. Especially if you are using an Arduino and you have lots of pins free, you can easily add sound effects to your project by just investing in an extra SD card module and a normal speaker. In this article I will show you how easy it is to Play music/add sound effects using your Arduino Board.  

Thanks to the Arduino community who have developed some libraries to build this in a fast and easy way. We have also used IC LM386 here for amplification and noise reduction purpose.

[Gust MEES] GREAT music quality!!

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This is a quick tutorial for our 128x64 and 128x32 pixel monochrome OLED displays. These displays are small, only about 1" diagonal, but very readable due to the high contrast of an OLED display. Each OLED display is made of 128x64 or 128x32 individual white OLEDs, each one is turned on or off by the controller chip. Because the display makes its own light, no backlight is required. This reduces the power required to run the OLED and is why the display has such high contrast; we really like this miniature display for its crispness!

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SO, after that one has becoming a little bit familiar with all that new stuff one has lived already some experience and one is asking if there aren’t any helping tools and devices to make life much easier… YES, and there are some very interesting prototype shields, board holders and breadboard jumper in different lengths…

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In this Arduino IR Tutorial we will learn how to control electronic devices using a TV remote and an Arduino. We will make few examples starting from controlling a simple LED, then controlling a DC Fan speed, to controlling high voltage home appliances. You can watch the following video or read the written tutorial below.

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Scrolling text with I2C-LCD1602. I was looking for a simple project for beginners, newbies on Coding and MakerED. A looong time ago since we did a project with ONLY four (4) wires, isn't it! Well here is one which is very easy to create, a "Scrolling text on a LCD1602 with "I2C-Bus".

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RFID RC522 Tag-Card Reader with LCD1602-I2C - We were already playing around with LCD's in our previous tutorial <===> First Steps with the Arduino-UNO R3 | Maker, MakerED, Coding | Super Starter Kit UNO R3 Project | LCD and Sensors Project <===> but there we used the SPI-Bus, meaning: connecting 12 wires (Potentiometer connections included...)!! With the I2C Bus we need ONLY to connect 4 wires!!

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https://www.scoop.it/t/21st-century-learning-and-teaching/?&tag=I2C

https://www.scoop.it/t/21st-century-learning-and-teaching/?&tag=LCD

http://blog.mklec.com/how-to-use-iici2c-serial-interface-module-for-1602-lcd-display/

1.Vorwort zur Arduino Anleitung

Diese Anleitung soll als Grundlage zum Erlernen der Arduino-Plattform dienen. Sie soll Anfängern einen einfachen, interessanten und eng geleiteten Einstieg in die Arduino-Thematik geben. Die Anleitung orientiert sich dabei hauptsächlich an praxisorientierten Aufgaben mit einer theoretischen Einführung vorab. Diese sollte man vorher unbedingt lesen, um bei den späteren Praxisaufgaben nicht an Kleinigkeiten zu scheitern.

Diese Anleitung ist im Rahmen einer Unterrichtstätigkeit entstanden. Sie kann kostenlos zum Erlernen der Arduino-Plattform verwendet, jedoch nicht ohne Erlaubnis kopiert oder anderweitig verwendet werden. Die Anleitung wurde sorgfältig erstellt und wird kontinuierlich gepflegt, jedoch wird keine Garantie für die Richtigkeit und Vollständigkeit übernommen.

Für die praktischen Aufgaben sollte man mit einigen elektronischen Bauteilen versorgt sein. Auf dieser Internetseite können sie passende Arduino-Sets bestellen, die speziell auf diese Anleitung zugeschnitten sind.

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Fuse is a vital protection device for many electronic devices. They simply monitor the current consumed by the circuit/load and in the event of unsafe current flowing through the circuit the fuse will blow itself and thus prevent the load/circuit form getting damaged by that high current. This type of fuse is called a mechanical fuse and there are many types of fuse such as fast blow, slow blow etc, but they suffer from one common draw back. When a fuse is blown it has to be replaced by the consumer/operator to make the device function normal again. This is the reason why many old electronic devices like toaster or electric kettle had a spare fuse provided along with the product.

To overcome this drawback, most of the modern electronic devices use an Electronic Fuse. An Electronic Fuse serves the same purpose of that of a mechanical fuse but it requires no replacement. It has a power electronic switch inside with closes and opens the circuit as required. In the unlikely event of a failure the switch is open the circuit and isolate it from the power supply, once the favorable condition returns the fuse can be reset by just clicking on a button. There is no hassle of purchasing a suitable value of fuse and replacing it for the old one. Interesting right?!! So, In this tutorial we will learn how to construct an Electronic Fuse circuit, how it works and how you could use one in your designs.

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Today, we will build an mp3 player using an Arduino and the DFPlayer mini MP3 module.

The DFplayer mini is a small, low-cost mp3 module with a simplified audio output that can be connected directly to a speaker or an earphone jack. The module can be used as a stand-alone module with attached battery, speaker, and push buttons or used in combination with a microcontroller or development board like the Arduino, enabled for RX/TX (Serial) communication, thus through simple serial commands we can play music and perform other functions like playing the next and previous song, shuffle, pause the song currently being played etc.

The module comes with an SDcard slot and supports both FAT16, FAT32 file system.

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Some Sketches require the OLED_I2C Library, here you can download it as a ZIP-File and include it through the Arduino IDE:

1) Click on "Sketch"

2) Click on "Include Library"

3) Click on "Add ZIP.Library..."

Have FUN and enjoy Coding!

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This is a working example of my OLEDMeter animation. This is a fairly accurate imitation of an Analog VU Meter. I think it even looks better than the original VU meters from the 60s and 70s. All I need now is a 2nd SH1106 for the left and right channels.

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This very simple sketch scans the I2C-bus for devices. If a device is found, it is reported to the Arduino serial monitor.

This sketch is the first step to get the I2C communication working.

The sketch shows the 7-bit addresses of the found devices as hexadecimal values. That value can be used for the "Wire.begin" function which uses the 7-bit address. Some datasheets use the 8-bit address and some example sketches use decimal addresses.

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We’re excited to announce the Arduino Engineering Kit, the first product released as a result of our new partnership with MathWorks, to reinforce the importance of Arduino at the university level in the fields of engineering, Internet of Things, and robotics.

The Arduino Engineering Kit, which will be available for purchase starting today on the Arduino online store, consists of three cutting-edge, Arduino-based projects and will teach students how to build modern electronic devices – challenging them intellectually and helping them develop physical engineering skills that will better prepare them to enter the commercial market following graduation. In addition to the hardware, after registering online, students and educators will have access to a dedicated e-learning platform and other learning materials.

The kit also includes a one-year individual license for MATLAB and Simulink, providing the user with hands-on experience in system modeling and embedded algorithm development.

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Graphics Primitives by Phillip Burgess
Each device-specific display library will have its own constructors and initialization functions. These are documented in the individual tutorials for each display type, or oftentimes are evident in the specific library header file. The remainder of this tutorial covers the common graphics functions that work the same regardless of the display type.

The function descriptions below are merely prototypes — there’s an assumption that a display object is declared and initialized as needed by the device-specific library. Look at the example code with each library to see it in actual use. For example, where we show print(1234.56), your actual code would place the object name before this, e.g. it might read screen.print(1234.56) (if you have declared your display object with the name screen).

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How to display bitmap wit Arduino.

Used librarys:
https://github.com/adafruit/Adafruit-...
https://github.com/adafruit/Adafruit_...

Bitmap converter...

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