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41 lines
1.9 KiB
41 lines
1.9 KiB
# Detect proximity - Wio Terminal
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In this part of the lesson, you will add a proximity sensor to your Wio Terminal, and read distance from it.
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## Hardware
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The Wio Terminal needs a proximity sensor.
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The sensor you'll use is a [Grove Time of Flight distance sensor](https://www.seeedstudio.com/Grove-Time-of-Flight-Distance-Sensor-VL53L0X.html). This sensor uses a laser ranging module to detect distance. This sensor has a range of 10mm to 2000mm (1cm - 2m), and will report values in that range pretty accurately, with distances above 1000mm reported as 8109mm.
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The laser rangefinder is on the back of the sensor, the opposite side to the Grove socket.
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This is an I<sup>2</sup>C sensor.
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### Connect the time of flight sensor
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The Grove time of flight sensor can be connected to the Wio Terminal.
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#### Task - connect the time of flight sensor
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Connect the time of flight sensor.
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1. Insert one end of a Grove cable into the socket on the time of flight sensor. It will only go in one way round.
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1. With the Wio Terminal disconnected from your computer or other power supply, connect the other end of the Grove cable to the left-hand side Grove socket on the Wio Terminal as you look at the screen. This is the socket closest to from the power button. This is a combined digital and I<sup>2</sup>C socket.
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1. You can now connect the Wio Terminal to your computer.
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## Program the time of flight sensor
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The Wio Terminal can now be programmed to use the attached time of flight sensor.
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### Task - program the time of flight sensor
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1. Create a brand new Wio Terminal project using PlatformIO. Call this project `distance-sensor`. Add code in the `setup` function to configure the serial port.
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