minimalist_lfo
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minimalist_lfo [2013/02/05 19:01] – created wadmin | minimalist_lfo [2013/02/05 22:35] – wadmin | ||
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This LFO is 2.5*5cm big and provides a powerfull, gate triggable LFO to any of your design. Just plug in a 5V and watch the monitoring LED glow as your 0< | This LFO is 2.5*5cm big and provides a powerfull, gate triggable LFO to any of your design. Just plug in a 5V and watch the monitoring LED glow as your 0< | ||
- | ==== Concept ==== | + | {{ : |
+ | This LFO has the following characteristics : | ||
+ | * Output swing from 0 to 4.8V | ||
+ | * Frequency from 0.5 to 10Hz | ||
+ | * Faded LED to visualise the LFO State | ||
+ | * Reset on the rising edge of a 5V Gate signal | ||
+ | * Low component count | ||
+ | |||
+ | ==== Version ==== | ||
+ | V1.0 - 05/02/2013 | ||
==== Schematic ==== | ==== Schematic ==== | ||
+ | The LFO is based on an ATTiny45/85 microcontroller. | ||
+ | {{ : | ||
+ | * Analog Input on Pin 3 reads the " | ||
+ | * Triangle Waveform LFO Waveform is generated by the Microcontroller | ||
+ | * LFO Output on Pin 5 (PWM Fast Mode) is filtered by R1/C1 to generate the 0-5V peak Triangle output | ||
+ | * AMP control potentiometer controls the amplitude of the LFO Output | ||
+ | * LED brightness is controlled by PWM as well | ||
==== PCB ==== | ==== PCB ==== | ||
+ | The Miniature 2.5x5cm PCB allows this LFO to be integrated in any design. | ||
+ | {{ : | ||
+ | Board connector is as follows : | ||
+ | * 1: 5V | ||
+ | * 2: Gate | ||
+ | * 3: GND | ||
+ | * 4: LFO Output | ||
+ | |||
+ | ==== Design Files ==== | ||
+ | Made with Eagle CAD Free version. | ||
+ | Download : {{: | ||
+ | ==== Software ==== | ||
+ | Programmed using Arduino IDE for ATTiny mod. | ||
+ | SW is currently under dev. Working demonstrator on breadboard, formal release "when ready" | ||
minimalist_lfo.txt · Last modified: 2018/08/26 09:36 by 127.0.0.1