PenGUI connects to Pravieum’s VSCEL laser dev kit and allows researchers to tune the laser to their specific needs. Our project aims to replace an online web based GUI with a touch screen offline GUI to control the laser. The touchscreen is a reTerminal which is powered by a Raspberry Pi compute module. Additionally, we will have an adapter board which the reTerminal will connect to so it can properly communicate with the laser. This adapter board will allow for the deprecation of a Red Pitaya microcontroller currently used to control the laser which is significantly more expensive than a reTerminal. Overall, our project's goal is to deliver a better interface for laser tuning at a more affordable price. 

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