Adafruit Neopixel Ring 16x5050 RGB LED with driver tilt Transmitting Module Size: 18mm*8

Transmitting Module Size: 18mm*8

UBLOX NEO-6M GPS Module has a battery for power backup and EEPROM for storing configuration settings

small size easy to control

but in order to avoid the voltage regulator chip damage

The arduino turbidity sensor detects water quality by measuring level of turbidity

Adafruit Neopixel Ring 16x5050 RGB LED with driver tilt Transmitting Module Size: 18mm*816 ultra bright smart LED NeoPixels are arranged in a circle with 1. 75" (44. 5mm) outer diameter. The rings are 'chainable' connect the output pin of one to the input pin of another. Use only one microcontroller pin to control as many as you can chain together! Each LED is addressable as the driver chip is inside the LED. Each one has ~18mA constant current drive, so the color will be very consistent even if the voltage varies, and no external choke