Instead of the relative horror of driving 40 LEDs with a single Arduino, [Martyn] bit the bullet and got a Maxim 7221 LED driver. Controlling 64 LEDs over a three-wire interface simplified the ...

But if you wish to control Hi-Power LEDs (or similar loads) additional driver circuitry is necessary ... we can use the low voltage output from the Arduino ports to control high voltage/current loads ...

The image shown below indicates the basic wiring diagram of the current limiting resistors and driver transistors. Next is the Hookup diagram of the Arduino 4-Digit 7-segment LED Display, followed by ...

The LED signs sitting idle on the left are brought to life by an Arduino replacement driver shown to the right. The big one is made by Signature Electronic and used as an advertising display like ...

Using and customizing the display is easy, with a specially written Arduino library and a dozen pre-made examples. Maker LED display also has Wi-Fi so it can connect to the internet to retrieve ...

The Arduino Nano Connector Carrier is a compact add-on board designed for the Arduino Nano boards to allow easy connection to ...

Another feature that the R4 WiFi boasts is its 12x8 red LED matrix, which is readily programmable using the Arduino_LED_Matrix library. This feature can come in handy in various Arduino projects ...