This Arduino-based 4 step sequencer uses the popular Auduino code as synthesiser, with some simple additions to add a sequencer to the code (see below). When i was experimenting with the Atari Punk Console 8-step sequencer described here, i was

In a previous project, i had connected an RGB LED to an ESP8266-01 to be able to change the colour over WiFi. This time i am going to use an 8-pixel Neopixel RGB strip, which only requires 1 digital pin