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The LMV358 opamp can source up to 160mA and works well as a low impedance driver/buffer
3V regulated voltage
but when the light from the LED is reflected back onto the phototransistor the output will begin to go lower
you have to be very sure now what kind of SMA connector you need
1" pitch prototyping board
SparkFun 7-Segment Serial Display - Red 7-Segment, Sparkfun Originals Patio The LMV358 opamp can source4 digit 7 segment displays are really neat little devices, its a shame that they can be so cumbersome to control. Well weve solved that problem by making them a little bit smarter. The SparkFun 7 Segment Serial Display combines a classic 4 digit 7 segment display and an ATMega328 microcontroller allowing you to control every segment individually using only a few serial lines. The Serial 7 Segment Display can be controlled in one of three ways: Serial
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