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WAVGAT Time of Flight距離センサ

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中華製の安価(300円程度)なVL530L0x互換ToFセンサをarduino nanoで試用。
販売元サイトによると、このセンサは最大2mまで1mmの精度で検出可能とのこと(使用環境への依存大)

image.png

裏側左から
1. GND
2. SCL
3. SDA
4. GPIO1
5. TUH2X
6. 5V / 3.3V

Arduino nanoとの接続は下記の通り。

ToFセンサ Arduino nano
GND 29ピン GND
SDA 22ピン A4
SCL 21ピン A5
5V/3.3V 27ピン +5V

Arduino nanoのピン番号は下記ページを参照
https://www.arduino.cc/en/uploads/Main/ArduinoNanoManual23.pdf

VL530L0x ToFセンサのサンプルプログラムは下のものを利用。
https://github.com/pololu/vl53l0x-arduino

  • サンプルのContinuous.inoの実行結果

image.png

室内夜間蛍光灯環境下で大学ノートを立てかけて計測してみたところ、最大で40cm程度の距離まで計測できた。
誤差は40cmでは1cmくらいだったが30cmで誤差3cm、10cmで誤差6cmくらい出ていた。
距離での補正テーブルが必要そう(反射物の材質にも影響するのかも)

どんな環境なら2mまで使えるかは不明だが、40cm程度の用途なら使えそう

以上

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