Qwiic Chirp 101 Ultrasonic Rangefinder

The CH101 from TDK InvenSense is a ToF (time-of-flight) ultrasonic rangefinder with a range of 4 centimeters to 1.2 meters. What sets the CH101 apart from other ultrasonic sensors that we've seen in the past is that it's capable of ranging multiple objects within its field-of-view simultaneously. This is made possible by an integrated system-on-chip that crunches the numbers and then provides digital range readings via I²C.

Our Qwiic breakout provides voltage regulation and level shifting for the MOD-CH101 Evaluation Module. This module consists of the CH101 sensor attached to an omnidirectional acoustic housing assembly and is attached with a short flex cable for easy mounting. There is not yet an Arduino compatible library for this sensor, however there is an API and extensive documentation available from TDK.

Experimental Product: SparkX products are rapidly produced to bring you the most cutting edge technology as it becomes available. These products are tested but come with no guarantees. Live technical support is not available for SparkX products. Head on over to our forum for support or to ask a question.
  • Operating range from 4 cm to 1.2m
  • Sample rate up to 100 samples/sec
  • I²C Fast-Mode compatible interface, data rates up to 400 kbps
  • Multi-object detection


Looking for answers to technical questions?

We welcome your comments and suggestions below. However, if you are looking for solutions to technical questions please see our Technical Assistance page.

Customer Reviews

No reviews yet.