The CC2541 SensorTag is the first Bluetooth Smart development kit focused on wireless sensor applications and it is the only development kit targeted for smart phone app developers. The SensorTag can be used as reference design and development platform for a variety of smart phone accessories.
Put on your sunglasses before using this matrix with 64 eye-blistering RGB LEDs adorn the panel for a blast of configurable color. Arranged in a 8x8 matrix, each pixel is individually addressable. Only one pin is required to control all the LEDs. You can cut a trace and use nearly any other pin if you need some customization.
This is simple and small portable water level/water droplet identification, detection sensor water that have high cost performance. Complete water yield and analog conversion, the output value apply to your custom function. It is low power consumption and high sensitivity. It can make better performance with Arduino 328 controller and sensor relay shield....
This is the pin compatible upgrded version of the ESP-01 chip.
ESP8266 is a highly integrated chip designed for the needs of a new connected world. It offers a complete and self-contained Wi-Fi networking solution, allowing it to either host the application or to offload all Wi-Fi networking functions from another application processor.
On board photoresistor, on board adjustable resistor; Operation: connect LED board and PCB board of camera w/ screw, adjust resistor of LED board (IR light auto work when it is dark and auto off if it is bright)