First and secondgeneration drilling microchipsare compared side by side on design architecture, system components, sensors, output signal, build materials etc. Temperature microchips were field tested in an on-shore well. From the 20 deployed microchips, 6 passed through the bit nozzles and survived the drilling process without causing any downtime to the operation. The data recorded by different microchips showed excellent consistency over the downhole part of the trip, from inside of the drill pipe up the annulus to the surface. This is the first time that a drilling microchip was successfully deployed while drilling, and a complete set of data recorded throughout the entire trip from drill pipe, to the annulus, all the way to the flow line and shale shaker. The consistent results from the microchip provide valuable information for a wide range of drilling activities.