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paper.md

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 Here we present a fully Free and Open Source (FOSS) and hackable framework consisting of a Micro/Python package and a simple compatible circuit schema;
 which can be used to build and operate a stimulus train delivery device with up to microsecond accuracy.
 This project includes a complete, step-by-step video tutorial to demonstrate the assembly of the COSplayer [@cosplayer], a free and open source hardware device which serves as the reference implementation for the technology. 
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 ![Circuit schema.](documentation/circuit.png)
 
 The software and circuit supports highly diverse types of stimulus output, accommodating most most experimental scenarios, including: