If this is your first time using Arduino, please review our tutorial on installing the Arduino IDE. Note: This example assumes you are using the latest version of the Arduino IDE on your desktop. The connection should look like the image below. The connectors are different on each side of the boost converter so it should not be Finally, power the circuit up with a micro-B USB cable and the Beefy 3. On the other side, insert the second cable that was included in the Power Output side between from the boost circuit to the TFMini. Then connect the Qwiic cable that was included in the Power Input side between the Qwiic adapter and the boost circuit. Once soldered, connect the power and I 2C pins between the Arduino Pro Mini 3.3V/8MHz and Qwiic adapter. If you haven’t yet assembled your 3.3V Pro Mini, now would be the time to head on over to that tutorial to solder the header pins. The default address of the TFMini is 0x10. As opposed to the original TFMini, the green and white wires for the Qwiic enabled TFMini uses an I 2C serial. This is useful when referencing sensor’s pinout. There is a marking next to the polarized connector to indicate the polarity as “ J1” as indicated in the image below. Make sure to use a logic level converter when reading the sensor with a 5V microcontroller. While the sensor can be powered at 5V, the I2C pins are only 3.3V logic. Make sure to use either the Beefy 3 with a 3.3V Arduino Pro Mini, BlackBoard, or the LD1117V33 3.3V voltage regulator to provide sufficient current for the TFMini. As a result, you will not be able to read the TFMini's output on an Arduino serial monitor. This causes 3.3V voltage regulator to enter thermal shutdown and the RedBoard to restart. ⚡ Warning: Since the Qwiic system uses 3.3V for power, the Qwiic enabled TFmini with boost circuit can exceed the maximum output rating of the 3.3V voltage regulator on the RedBoard powered by Arduino. In this tutorial, we will be using the included boost converter by applying a 3.3V input voltage from the Qwiic side to boost power to 5V on the TFMini side. Input PowerĪccording to the datasheet (pg 1), the input voltage is 5V. The distance measured may vary depending on the environment and the reflectivity of object. The distance between the two can be converted using the sensor by calculating the time and phase difference. The light that is reflected from the object returns to the sensor’s receiver. The sensor works by sending a modulated near-infrared light out. It differs significantly from traditional IR rangefinders in that it uses ToF to determine range and not triangulation - as is performed by the Sharp GP-series devices. Many such systems are being marketed under the name "LiDAR," although it may be more appropriate to think of this device as a "Time-of-Flight Infrared Rangefinder". Note: This product does not use laser light for ranging.
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