Description: Order your pcb design at JLCPCB: $2 for 10pcs PCBs (24 hours turnaround time). up to $20 shipping discount on ...

Thus, they entered a heart rate sensor to our 2025 One Hertz Challenge! The build is based around a Wemos D1 mini, a ESP8266 development board.

RGB color sensors are examined as an economical replacement for non-lighting based occupancy sensors such as PIR sensors and ultrasonic sensors. RGB color sensors are inexpensive and able to ...

AM232X Arduino library for AM2320 AM2321 and AM2322 I2C temperature and humidity sensor.

The design of a “third eye for the blind,” which employs ultrasonic waves to detect surrounding obstructions and notify users with a buzzer sound or vibration, is made feasible by the collaboration of ...