random things I made and things I learnt making them
Previous Post Block diagram – System Overview The step sequencer will be interface with the Novation BassStation via the ribbon cable on the left, with optional support for 3rd devices via a MIDI interface on the right. This will allow the sequencer to be reused for other MIDI-supported devices. Microcontroller pinout The microcontroller pinout specifics…
Previous Post Front panel design So lets talks about how we want the front panel to be laid out. Lets start with the connector interface: 20-Pin Ribbon cable connector for the synth interface switching. Power (in the form of a barrel connector). MIDI in/out (for future compatibility with 3rd party devices). Convention says we put…
Previous Post Power Supply Requirements Description Total 1 MCU (STM32G0B1) 3.3V 10mA, at max settings 10mA 2 BassStation I/O 5V 8uA; each ch, drawn from bass station connector 8uA 3 RGB LED Driver IC (TLC5955) 5V 2 x 1.5A (500mA per colour group) 3A 4 Keyscan IC (ADP5587) 3.3V 200uA per key pressed 50uA per…
Designing the sequencer Previous Post So whats next? Well we need some way to set the steps on the sequencer. I want 16 steps per bar, each step can be illumintated by the user, with an ability to set the note (and the duration). The sequencer runs through the individual steps at a given tempo,…
Recap Previous post Previously I made the plan to design a sequencer for the original Novation BassStation. This would work by switching the connections on the ribbon cable that connected the keyboard to the motherboard. I mapped out the signal on the ribbon cable, now I needed to decide how to multiplex these signals electronically.…
Intro I just scored this original Novation BassStation synth on Ebay. It’s a hybrid synth that uses digital timing control courtesy of an MCU (Panasonic MN1883217) to control two analog oscilators. Legend tells that it has a richer sound than the rack mounted version. Well, i’m not qualified to verify such claims, but it is…
The purpose of this project is to design, build a programmable guitar FX pedal using a Cortex-M4F micro and I2S. This will provide a platform for development and experimentation of DSP algorithms and techniques. This is also an experiment to use C++ in embedded development.
– Output signal with synchronized auxiliary output for re-triggering.
– Input signal trigger using frequency or voltage.
– User-modifiable output attributes including function, frequency, gain and DC offset.
– Frequency Sweep mode.
– RGB colour TFT LCD display.
– Small form factor.
Reminder for pot wiring direction….
Hybrid splitter and mixer guitar pedals using analog audio signal path with DSP-controlled peak detection