Author: GRobotronics

7-Segment 4-Digit multiplexing with 4511

Required Hardware Arduino Uno Breadboard Jumper Cables 7-Segment 4-Digit Common Cathode 4511 Resistors 390ohm Resistors 1Kohm Resistor 150Kohm Transistors NPN BC337 This is a tutorial on multiplexing four seven-segment (Common Cathode LED displays from an Arduino using a single 4511

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First Look at the new Arduino Zero

Hinted at yesterday by Massimo Banzi during his keynote speech at MakerCon yesterday, Arduino has just officially announced their latest board—the Arduino Zero. On the surface the board may look very similar to the Arduino Leonardo, but there are big differences. Powered by a 32-bit ARM Cortex M0+ core, theAtmel

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Fixed Power Tutorial

Required Hardware L7805 Voltage Regulator 2x 100uF Electrolytic Capacitors DC Barrel Jack Adapter Add the 7805 power regulator and the lines to power the board. The regulator is a TO-220 package where the Input from the external power supply goes

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Make your plant smile

Required Hardware Led Matrix 8×8 Soil Hydrometer Sensor ATtiny85 9V Battery Battery Clip Prototyping Board Voltage Regulator L78L05 2x Capacitors 10uF 25V This is a funny project that makes our plants “talk” to us. It’s very simple and you can

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Build an Arduino in a breadboard

Required Hardware 1x ATmega328 with Bootlaoder 1x Breadboard 830 Jumper Cables for Breadboard 1x Crystal 16M 2x Ceramic Capacitor 22pF 1x Ceramic Capacitor 100nF (Reset) 1x Resistor 10Kohm (Reset) 1x Push Button (Reset)   This tutorial explains how to migrate

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Code Club

«Code Club» Ελλάδας   Τα «Code Clubs» μαθαίνουν σε παιδιά ηλικίας 9–11 τις βασικές δεξιότητες του προγραμματισμού με διασκεδαστικό τρόπο, δείχνοντάς τους πώς να δημιουργήσουν ηλεκτρονικά παιχνίδια και ιστοσελίδες. Είναι δωρεάν και διδάσκονται από εθελοντές, προσφέροντας τη δυνατότητα σε κάθε

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How to read Keypad with Arduino and I2C

Required Hardware Keypad 3×4 Matrix PCF8574A Breadboard 830 Jumper Cables M/M Resistors 220Ohm With this library and LCDI2C4Bit you can use one keypad and one lcd (and a lot more devices! like eeproms, etc.) using only two analog pins on

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How to control LCD Display with ATtiny85

Required Hardware ATtiny85 LCD Display with I2C Connection This is a useful example for controlling a LCD Display with ATtiny85. To connect them you need a LCD Display with I2C interface connection. Wiring Instructions To wire your Lcd I2C Display

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IR Remote Example

Required Hardware IR Receiver Diode IR Remote Control Arduino Uno Some Jumper Cables Breadboard 830 USB Cable A-B   Infrared (IR) is a cheap and (as you’ll soon discover) easy way to add wireless control to your project. Wiring To wire

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Exploring the Arduino/Intel Galileo

The list of official Arduino boards continues to grow, and, continuing with the famous-Italian-person trend, now includes the Galileo. The Galileo is Intel’s toe-dip into the Arduino waters. It features theirQuark SoC X1000 – a 32-bit, x86 system-on-a-chip that can run at up to

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NeoPixel Tiara

You can make a crown of light for prom or your birthday this year! A few free-wired NeoPixels make you the cyber-pageant queen. Learn more…  

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Adding colorful LEDs to your project used to require a lot of pins on your microcontroller and complex code. With the Adafruit NeoPixels, those problems are a thing of the past. You only need one pin on any microcontroller to

Posted in Videos

Adafruit CC3000 WiFi Breakout

The CC3000 hits that sweet spot of usability, price and capability. It uses SPI for communication (not UART!) so you can push data as fast as you want or as slow as you want. It has a proper interrupt system

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Adafruit Ultimate GPS

The breakout is built around the MTK3339 chipset, a no-nonsense, high-quality GPS module that can track up to 22 satellites on 66 channels, has an excellent high-sensitivity receiver (-165 dB tracking!), and a built in antenna. You can buy it

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Introducing the Adafruit TRINKET

Introducing the Adafruit TRINKET

Trinket may be small, but do not be fooled by its size! It’s a tiny microcontroller board, built around the Atmel ATtiny85, a little chip with a lot of power. You can buy it from our online shop.  

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