Grove - 4-Digit Display Raspberry Pi and it can be used

and it can be used to detect ambient sound level

It includes a 5W solar panel and 1500mAh rechargeable battery pack with charge controller

3 x 32mm Green EVA Ball

the faster it rotates

FreeRTOS support

Grove - 4-Digit Display Raspberry Pi and it can be used4 digit display module is usually a 12 pin module. In this Grove gadget, we utilize a TM1637 to scale down the controlling pins into 2 Grove pins. It only takes 2 digital pins of Arduino or Seeeduino to control the content, even the luminance of this display. For projects that require of alpha numeric display, this can be a nice choice. Features 4 digit red alpha numeric display Grove compatible 8 adjustable luminance levels Application Ideas Time