Infrared Photoelectric Switch Category_Display & LED/Accessories it requires a real-time microconroller

it requires a real-time microconroller such as an AVR

The BGM220 Explorer Kit from Silicon Labs is an ultra-low cost

The ATP is fully compatible with SparkFun's Arduino core and can be programmed easily under the Arduino IDE

* ON/OFF switches

The board includes a rechargeable 3V/1mAh battery to provide backup power for up to four hours to maintain a hot start of just a single second

Infrared Photoelectric Switch Category_Display & LED/Accessories it requires a real-time microconrollerThis is a pair of photoelectric switches with a detection distance of up to 1. 5m and a fast and stable response time of less than 1ms. The module consists of a transmitter and a receiver. The transmitter contains an infrared diode that can emit infrared rays with strong penetration, thereby ensuring that the sensor can achieve stable signal reception regardless of weather, which greatly improves its measurement accuracy. The module has a small size