JQ6500 MIDI MP3 Player Module – Part 2

Having played with my JQ6500 a little now, I just wanted to finish the project by building a shield to support the module's use with an Arduino Uno. Warning! I strongly recommend using an old or second hand keyboard for your MIDI experiments.  I am not responsible for any damage to expensive instruments! These are the … Continue reading JQ6500 MIDI MP3 Player Module – Part 2

JQ6500 MIDI MP3 Player Module

As I mentioned last time, I want to turn m JQ6500 into a MIDI-driven sample player.  This project describes how to do that. In part 2, I turn this into a simple shield. https://www.youtube.com/watch?v=_mvTisAVe5o&feature=youtu.be Warning! I strongly recommend using an old or second hand keyboard for your MIDI experiments.  I am not responsible for any damage … Continue reading JQ6500 MIDI MP3 Player Module

MCP4725 MIDI Sample Player

This is an update to my MCP4725 Sample Player to have it "playable" over MIDI rather than be triggered via a button. Warning! I strongly recommend using an old or second hand keyboard for your MIDI experiments.  I am not responsible for any damage to expensive instruments! These are the key Arduino tutorials for the main … Continue reading MCP4725 MIDI Sample Player

MCP4725 and Mozzi – Part 2

So, ignoring the delirium that turned out to be MCP4725 and Mozzi this is using the built-in I2C "TwoWire" support in the Mozzi library to talk to the MCP4725 and generate audio. https://youtu.be/xtVi1blvt1c Warning! I strongly recommend using an old or second hand keyboard for your MIDI experiments.  I am not responsible for any damage to expensive … Continue reading MCP4725 and Mozzi – Part 2

MCP4725 Digital to Analog Converter – Part 3

My plan was always to try to use my MCP4725 board with Mozzi eventually, but there is one thing I came to realize that has stopped that ambition.  You can't talk I2C from an interrupt routine using the standard Arduino Wire libraries.  Mozzi uses an interrupt routine to output the audio samples at the required … Continue reading MCP4725 Digital to Analog Converter – Part 3

MCP4725 Digital to Analog Converter – Part 2

This is a short post showing some of the steps to take the dividing/filter circuit from the MCP4725 Digital to Analog Converter to stripboard or protoboard. If you know how to solder, this is fairly straightforward. If you are not sure, find a good tutorial and then come back and have a go. Recall, both … Continue reading MCP4725 Digital to Analog Converter – Part 2

MCP4725 Digital to Analog Converter

After my experiments with Mozzi, one thing I wanted to try was using a dedicated digital to analog converter (DAC), which is something the common Arduinos lack. After some searching I found the MCP4725 which links up to the Arduino using the I2C bus.  From the datasheet: "The MCP4725 is a low-power, high accuracy, single … Continue reading MCP4725 Digital to Analog Converter