App note: OB1203 pulse oximeter module electrical, thermal, and optical design guide

App note on Renesas’ pulse oximeter basics and its applications. Link here (PDF) The Renesas OB1203 pulse oximeter module optically detects heart rate and blood oxygen saturation (SpO2). Respiratory rate and other health information that can be inferred from the optical pulse waveform (PPG) signal. The OB1203 also features a proximity sensor and ambient light […]

Pulse Oximeter functionality for a medical device

Alexander Lang writes: The gentlemen for whom I’m developing this hardware for has requested some additional functionality. The additional functionality requested is a Pulse Oximetry measurement.  Pulse Oximetry is the measurement of a person’s pulse along with how much oxygen is present within their blood.  It is a common measurement made by medical practitioners to […]

Simple DIY ECG + pulse oximeter (V2)

Scott Harden has designed an ECG/pulse oximeter combo project using LM324 op-amps. Scott describes, “This new project is fully documented and uses extremely common and cheap parts, all of which could be purchased at RadioShack. It serves as both an ECG *and* a pulse oximeter, depending on which leads are attached. It uses a single […]