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 →

Keyboard MIDI Matrix Decode

Following on from my Keyboard Matrix Decode I've now added MIDI out! So I have a full sized MIDI controller keyboard for the cost of a cheap Arduino Nano clone and a couple of passive components! https://youtu.be/kqcfxiKIzi4 Warning! I strongly recommend using an old or second hand keyboard for your MIDI experiments. I am not responsible for … Continue reading Keyboard MIDI Matrix Decode →

Keyboard Matrix Decode

I found an old keyboard, a "KSP970" which is a sub £20 keyboard with full size (non touch sensitive) keys, that was being thrown out as battery acid had corroded away most of the circuit board inside, but the keyboard itself was still intact so I thought it would make an interesting project to attempt … Continue reading Keyboard Matrix Decode →

Mozzi Output Circuit – Part 2

The simple Mozzi Output Circuit is fine for experimenting but when it comes to combining signals it can really do some damage - I may have trashed the small amp I was using for my experiments - remember my warning - I strongly recommend using an old or second hand keyboard for your MIDI experiments. I … Continue reading Mozzi Output Circuit – Part 2 →

MozziByte Output Board

I ordered myself a MozziByte board to make playing around with Mozzi a little simpler and it works really well. This details the updates to the Arduino PWM MIDI Synthesis with Mozzi project required to use the new board. These are the key Arduino tutorials for the main concepts used in this project: Mozzi Synthesis Library … Continue reading MozziByte Output Board →

Arduino Multi Mozzi String Synth – Part 2

This projects takes another look at the Arduino Multi Mozzi String Synth and takes a slightly different approach to create a simple four-note polyphonic version of the string synth. To combine the outputs I'm using my Simple Passive Audio Mixer, but that isn't necessarily required. It also relies on (and builds in capability to support) the Arduino … Continue reading Arduino Multi Mozzi String Synth – Part 2 →

Arduino MIDI VS1053 Synth – Part 2

I'm planning a use of the VS1053 shield but need to be able to pre-select which instruments to play and which channels to respond to. This revisits the Arduino MIDI VS1053 Synth and adds that functionality. Warning! I strongly recommend using an old or second hand keyboard for your MIDI experiments. I am not responsible for any … Continue reading Arduino MIDI VS1053 Synth – Part 2 →

Arduino MIDI Filter

I am working on something that might allow several of my projects to come together, but one issue I'm having is the overheads of processing unnecessary MIDI traffic are causing delays in playing for some of the modules. So I thought I'd create a MIDI filter that can be used to see all the traffic … Continue reading Arduino MIDI Filter →

Arduino MIDI R2R Digital Audio

With all the excitement of experimenting with Mozzi, I never really finished my R2R digital audio series. This final part adds MIDI to the R2R shield I built in Arduino R2R Digital Audio – Part 3. https://youtu.be/i6Y9QiTxTeQ Warning! I strongly recommend using an old or second hand keyboard for your MIDI experiments. I am not responsible for … Continue reading Arduino MIDI R2R Digital Audio →