arduino uno pinout, schematics and pin descriptions

Arduino Uno Pinout Specifications Microcontroller ATmega328P Operating Voltage 5V Input Voltage (recommended) 7-12V Input Voltage (limit) 6-20V Digital I/O Pins 14 (of which 6 provide PWM output) PWM Digital I/O Pins 6 Analog Input Pins 6 DC Current per I/O Pin 20 mA DC Current for 3.3V Pin 50 mA Flash Memory 32 KB (ATmega328P) of which 0.5 KB used by bootloader SRAM 2 KB (ATmega328P) EEPROM 1 KB (ATmega328P) Clock Speed 16 MHz LED_BUILTIN 13 Length 68.6 mm Width 53.4 mm Weight 25 g Arduino Uno Pinout…

Another 16 electronic kits for beginners

In this article we show another 16 kits that are ideal for beginners Voice-activated melody light A fun little kit where the LEDs flash based on music/sounds. Cost about $1.60 Voice control LED melody light Doorbell DIY Kit Only $0.59 for a 555 timer based doorbell kit. It needs 4 to 7v. The speaker is rated at 8 Ohm 0.25W so it has a reasonable volume for the job in hand. NE555 Doorbell DIY Kit Multi-channel Waveform Generator kit This NE555 multi-channel waveform generator can produce square wave, sawtooth wave, triangular…

12 basic electronic kits that are ideal for beginners

Back in the day when I was staring out I used to make up a variety of electronic circuits on breadboards and even designed my own PCBs, the would be logic circuits, power supplies and 555 timer circuits. Nowadays you can buy complete kits with the PCBs and all required components for very low prices. These are ideal for beginners and also kids for learning, even for someone more experienced like me I still find them fun to make. I have purposely chosen kits with no SMT components, lets get started Digital Watch Electronic…

10 of the most useful arduino shields

In this article we are going to show you the 10 Most Useful Arduino Shields. This is our opinion based on the many shields that we have tried and tested.If you are new to the arduino platform then you will quickly realise that shields are a quick, easy and usually low cost way to easily add functionality to your arduino. Rather than building circuits on breadboards or designing prototyping boards you can simply attach a shield and get the functionality

ESP32 Development Boards Review

The ESP32 is a series of low-cost, low-power system on a chip microcontrollers with integrated Wi-Fi and dual-mode Bluetooth. In this article we look at a few options that you can buy and develop with this tremendous microcontroller.

Arduino and RGB led examples

In this article we simply show you 4 examples using an RGB LED connected  to an Arduino The RGB led we had was a common anode type, so if you only have common cathode one's available you will have to modify the code examples later on

Wemos LED matrix shield examples

In this article we will look at the wemos matrix shield, we will have numerous examples using the Arduino IDE The shield is an 8x8 LED matrix, this matrix is controlled by a TM1640.  The TM1640 is a LED (Light Emitting Diode Display) drive control circuit integrating MCU digital interface, digital latch, LED high voltage drive circuit, etc

Various Wemos RGB LED Shield examples

Here are a few code examples for the Wemos RGB LED Shield, the shield consists of 7 RGB LEDs (WS2812B-mini) each wtih 24-bit RGB color 9 optional control pins (Default: D4/GPIO2) It fits on a Wemos mini and is easy to create examples, you simply need to add the adafruit neopixel library in the library manager in the Arduino IDE Example 1 This is the default example #include <Adafruit_NeoPixel.h> #define PIN D4 #define LED_NUM 7 Adafruit_NeoPixel leds = Adafruit_NeoPixel(LED_NUM, PIN, NEO_GRB + NEO_KHZ800); void…