Bluefruit LE Friend - Bluetooth Low Energy (BLE 4.0) - nRF51822 v3.0 POL_3pi+ 32U4 OLED Robot com/tutorials/ws2812-breakout-hookup-guide#pinout)

com/tutorials/ws2812-breakout-hookup-guide#pinout)

the Raspberry Pi PLC has the internal clock that guarantees the current time and date to keep track of the right time

This LCD utilizes the extremely common HD44780 parallel interface chipset

A single jumper link is used to select Serial or I2C mode

Bluefruit LE Friend - Bluetooth Low Energy (BLE 4.0) - nRF51822 v3.0 POL_3pi+ 32U4 OLED Robot com/tutorials/ws2812-breakout-hookup-guide#pinout)The Bluefruit LE Friend is your new BLE BFF! This USB to BLE board makes it easy to get your computer talking to your BLE enabled phone or tablet using a standard serial UART connection. In its simplest form, it works on the same principle as a common USB Serial adapter (the FTDI Friend , for example!). Any data that you enter via your favorite terminal emulator on your development machine will be transferred over the air to the connected phone or