The Grove - Speaker is a module consist of power amplification and voice outputs.
Its heart is a dual channel H-bridge driver chip that can handle current up to 2A per channel, controlled by an Atmel ATmega8L which handles the I2C communication with for example an Arduino.
This module is based on 2-Coil Latching Relay. Contrast to the ordinary relay, this latching relay do not need continuous power to keep the state, only a rising/falling pulse is needed to change the work state.
The Grove Relay is normally a digital open switch that controls a relay capable of switching much higher voltages and currents.
The Grove – DMX512 is a adapter from Grove interface to DMX512 interface(industry standard EIA-485 interface. The module is based on SN75176 chip which can balance transmission lines and meet ANSI Standard EIA-485 interface.
The RTC module is a member of Twig. It is based on the clock chip DS1307 which supports the I2C protocol. It uses a Lithium cell battery (CR1225). The clock/calendar provides seconds, minutes, hours, day, date,month, and year information.
Smart Pi touch is a handy case and stand that holds a Raspberry Pi LCD,Raspberry Pi camera module and HATS.
Raspberry Pi touchscreen 7"is handy,user friendly device functioning as a display screen and a tablet for IOT applications.
With the ProtoCentral Battery HAT, add some juice to your Raspberry Pi and make it truly wireless and independent.
ProtoPi T with USB Serial Access is an add-on to the breadboard as it allows you to play with all the GPIO pins
Proto Pi T bridges the gap between the Raspberry Pi3 and the breadboard.
Make your very own Astro Pi with the Raspberry Pi sense hat that has integrated sensors for different experiments.