Wireless Photoplethysmography Sensor for Continuous Blood Pressure Biosignal Shape Acquisition

Figure 5

Developed devices. (a) Finger clip optical pulse sensor. (b) Analogue preprocessing. (c) Arduino Beetle board. (d) ESP8266 Wi-Fi module. (e) Wireless PPG sensor module implementation.

(a)

(b)

(c)

(d)

(e)