Abstract Background In a number of clinical and research settings. it is desirable to have an individual breathe in a particular fixed pattern (respiratory synchronized breathing). The purpose of this brief technical report is to show how a control system for this purpose can be easily and inexpensively developed using an Arduino UNO microcontroller platform. Results We programmed an ... https://www.spidertattooz.com/The-GelBottle-Inc-Gel-Polish-Audrey-67oz-p17921/