The GP2D120 is an easy to use IR range sensor that outputs an analog voltage relative to the distance. This sensor can detect ranges from as close up as 10cm through to 80cm.
GP2Y0A21 Data Sheet
InfraRed Ranger GP2Y0A21
£11.27 inc VAT (£9.39 ex VAT)
Available on back-order
Brand: DevantechPart Number: GP2Y0A21
SKU: PPGP2Y0A21
Barcode: 5055421021375
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Alan –
Have two of these in my project with no issues, got them up and running with the sample code from here: