Stelo CGM Teardown: Unlocking the Secrets of a Cheap CGM

This article details a teardown of Dexcom's Stelo CGM, an affordable ($50) continuous glucose monitor. The author shares their experience using the device and delves into its internal workings, including the nRF52832 microcontroller, CR1216 coin cell battery, and other unidentified chips. By measuring power consumption, the author reveals that the battery life far exceeds the claimed 15 days, and explores the possibility of using energy harvesting for permanent power. The article also sparks discussion on product cost breakdown and market competition, making it a compelling read for both tech enthusiasts and those interested in medical technology.