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software/readme.md

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-Software modules for peristaltic perfusion
+## Overview
+![image](https://user-images.githubusercontent.com/17702921/167868687-57bcb37f-10d3-41ca-963a-817679d6fb93.png)
+
+The software modules for the peristaltic incubator perfusion system are developed in a [separate repository](https://github.com/IRNAS/new-harvest-rpi-drive-system/tree/master), which is linked to this folder as a submodule. The documentation on installation and usage are linked here:
+- [The installation instructions and usage](https://github.com/IRNAS/new-harvest-rpi-drive-system/blob/master/README.md)
+- [Extended user guide](https://github.com/IRNAS/new-harvest-rpi-drive-system/blob/master/docs/user_guide.md)