Arduino pulse sensor is quite commonly seen in various example projects using the typical sensor first made by pulsesensor.com. The sensor has a positive connection, a negative connection and an analogue data pin. It is quite easy to connect it with Arduino. pulsesensor.com has lot of examples and library of codes. For Mac, they have an app too. Pulse sensor module is important cheapest biomedical … [Read more...]

Of course 74HC595 can do more than just controlling dumb LEDs but LEDs is what commonly used to give example of how 74HC595 works and LEDs are used in decoration. Arduino shift register 74HC595 library makes prototyping with LED easy & fast. Furthermore, the user can add more features or examples to the library or it's fork to make it more useful to the new Arduino users. For this guide, the … [Read more...]

Previously we published some Arduino guides which use the millis function. Arduino 2 LED was a basic project, Arduino Flip-Flop Blinking LED With Push Button is somewhat advanced project. Others were One Push Button Multiple Functions supporting Single Press, Double Press, Long-Time Press, Arduino Blink LED Rate Depending On Push Button Press Duration etc. In this guide we will use 3 LEDs and one … [Read more...]

Sony Spresense definitely a good board at $65. This development board from Sony is relatively new and sports expected better A/V hardware. Essentially it is a single board computer for IoT development. In other words it is an luxarious Arduino compatible board with ARM CPU. Of course it can run some kind of Linux on it. The board has integrated GPS, Hi-res audio output and multi mic inputs. The … [Read more...]