Low-Cost IoT-Based Oximeter Controlled by NodeMCU and MAX30102 Targeting Peru's Non-Specialized Population in 2022

COVID-19 changed the way in which health status monitoring is performed worldwide, the use of devices to measure general vital signs has become increasingly revolutionary and expensive. Based on this environment, a low-cost SpO2 level sensor was developed, which serves as a basis for the implementation of more complex systems and thus introduce the population without technical knowledge to the development of their own sensors, the system is controlled by a NodeMCU open source IoT platform, which is controlling the MAX30102 sensor, a pulse oximetry module, The information of the SpO2 level is immediately sent to the cloud to the "ThingSpeak" platform and this is connected to a mobile application for viewing, what stands out of the system is its easy implementation, as well as its portability and low cost, but above all that starting from the most basic idea allows the system can be implemented by the population that has no knowledge about programming or IoT, which originates that it is a starting point to get started in this field of development and IoT.