The SparkFun Qwiic Mini dToF TMF8821 Imager is a highly advanced direct time-of-flight (dToF) sensor that combines precision and compact design, ideal for a wide range of applications requiring accurate distance measurement. This sensor features a modular package integrated with a Vertical Cavity Surface Emitting Laser (VCSEL) from AMS, delivering exceptional performance with a detection range of up to 5000mm. The TMF8821 is powered by Single Photon Avalanche Diode (SPAD) technology, along with a fast time-to-digital converter (TDC) and histogram processing to provide accurate distance readings. The sensor supports multiple multizone configurations (3x3, 4x4, and 3x6), which enhances its ability to detect multiple objects in the field of view. It also includes a multi-lens-array (MLA) above the VCSEL to expand the field of illumination. Its on-chip processing enables the TMF8821 to perform distance measurements in various lighting environments, from dark to bright sunlight, making it versatile for real-world applications like robotics, gesture detection, and more. In terms of ease of use, the sensor interfaces via I2C through SparkFun’s Qwiic system, eliminating the need for soldering. The board features configurable GPIO pins, an enable pin, power LEDs, and I2C pull-up resistors, all of which are adjustable via jumpers. The compact size of the Mini version (0.5" x 1.0") ensures it fits into space-constrained projects without sacrificing performance.

Features:

• Direct Time-of-Flight (dToF) Technology: Based on Single Photon Avalanche Diode (SPAD) detection for high-precision distance measurements.
• Wide Measurement Range: 10mm to 5000mm, suitable for various applications.
• Multizone Detection: Configurable 3x3, 4x4, and 3x6 zones for multi-object detection.
• High-performance On-chip Processing: Includes histogram technology and optical filters for sunlight rejection.
• Easy Communication: Supports I2C interface via the Qwiic system, allowing for quick setup without soldering.
• Configurable GPIO Pins: Offers flexibility with two GPIO pins, an enable pin, and breakout pads for power, I2C, and interrupts.
• Adjustable Field of View: Capable of up to 63° diagonal field of view.
• Compact Design: The small footprint of 0.5" x 1.0" makes it ideal for space-constrained designs.
• Sunlight and Dark Environment Support: Capable of accurate measurements in various lighting conditions.

Specifications:

• Operating Voltage: 2.7V to 3.6V (typically 3.3V via Qwiic cable)
• Current Consumption: 8µA (standby) / 57mA (active)
• Sensor: AMS TMF8821 Multi-zone Time-of-Flight Sensor
• Multizone Configurations: 3x3, 4x4, 3x6 for multi-object detection
• Technology: Direct ToF with SPAD detection
• TDC Architecture: Fast with sub-nanosecond light pulse
• Measurement Range: 10mm to 5000mm @ 30Hz
• Light Source: Class 1 940nm VCSEL
• Field of View: Adjustable up to 63° diagonally
• Max Read Rate: Up to 30Hz
• Connectors: 2x Qwiic Connectors
• I2C Address: 0x41
• Operating Temperature: -30°C to +70°C
• Breakout Pads: 1x Ground, 1x Power, 1x I2C Port, 1x Interrupt, 2x GPIO, 1x Enable
• LED and Jumper Options: Power LED, configurable I2C pull-ups
• Board Dimensions: 0.5" x 1.0" (1.27cm x 2.54cm)

Pinout: