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The Raspberry Pi is a credit-card sized computer that plugs into your TV and a keyboard. There have been several generations of the device with improved performance, more memory, and more connectivity. This tag should be used for electrical engineering questions that involve the use of a Raspberry Pi. For questions about the Raspberry Pi itself see the Raspberry Pi specific forum (raspberrypi.stackexchange.com).

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Pulse oximeter design: How to drive a bi-polar LED having two different forward voltages?

My lab partner and I are building a pulse oximeter for our capstone project and could use some help. I have an ELM-4002 which is a bipolar LED with the following specifications. The two LEDs are label …