How to Make a Useful Photoreflector for Arduino




About: --- Japanese 高尾宏治、ITエンジニア、島根県松江市在住、広島県庄原市出身。 基本的に一度でも会ったことがあれば気軽に友達申請をしてください。逆にそのスタンスで私からも友達申請しちゃいます!! --- English I am a computer system engineer. I am one of the CRuby and MacRuby commiter. Work: Ruby, R...

This is a how to make a useful photoreflector for Arduino.

Photoreflector is a sensor that is often use for line tracer.

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Step 1: Tools

  • Soldering iron
  • Solder (1.0mm)
  • Nipper

Step 2: Materials

  • Photoreflector LBR-127HLD, 50JPY
  • 180 Registor (180R), about 10JPY
  • 10K Registor (10K) about 10JPY

total price 70JPY.

In Japan, same photoreflector is about 550JPY!? ( see POLOLU-2458 )

Step 3: Hold a Photoreflector

Step 4: Fold 1 and 4 of the Photoreflector

Step 5: Fold 2 Against 3 of the Photoreflector

Step 6: Fold 2 of the Photoreflector for Closing Contact 4 of It

Step 7: Sold 2 and 4 of the Photoreflector

Step 8: Cut 2 of the Photoreflector at Root.

Step 9: Fixed 180R Near Root of 1 of the Photoreflector

Step 10: Sold 180R and 1 of the Photoreflector

Step 11: Cut Solded a Wire of 180R and a 1 of Photoreflector

Step 12: Fold a 10K Wire Near Root of 4 of the Photoreflector

Step 13: Sold a 10K Wire and 4 of the Photoreflector

Step 14: Cut Only a 10K Wire

Step 15: Earn 4 of the Photoreflector

Step 16: Fold a 10K Wire and 1 of the Photoreflector

Step 17: Sold a 10K Wire and a 180R Wire

Step 18: Cut Only 10K Wire

Step 19: Cut Too Much Wire of 180R

Step 20: Finished!

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    8 Discussions


    Reply 4 years ago on Introduction

    You didn't

    currently it is listed (twice) as a "Registor"

    BTW, I would also suggesto to explain how the photoreflector becomes actually more useful with those two resistors.


    4 years ago on Introduction

    Here in the Philippines it would cost 15 PHP or about 40JPY

    I use a 220 Resistor instead of using a 180 for a sensitive/ longer range detection

    or a 1k Resistor for a close range detection


    4 years ago

    In Japan, this is about 70JPN.
    A manufactured one is POLOLU-2458 ( ). It's 550JPY.


    4 years ago on Introduction

    This looks so great! Have you noticed any difference from this and a commercially manufactured one? What's the price difference?