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microswitches are like $0.05 or less in large quantities, I don't think you can find an LED/phototransistor pair cheaper than that.
by jmole 5y ago
microswitches are like $0.05 or less in large quantities, I don't think you can find an LED/phototransistor pair cheaper than that.
- sokoloff 5y agoUnder $0.02 @2K: https://lcsc.com/mobile/product-detail/Phototransistors_XINGLIGHT-XL-1608PDC_C965887.html https://lcsc.com/mobile/product-detail/Phototransistors_XING... Plenty more as well and no shortage of LEDs at $0.01ea @ 2K.