Do you have some liquids that you need to move? This fluid pump will move 350 gallons per hour! The SEAFLO mini water pump has a heavy duty 12V, 1.5Amp motor and a tough thermoplastic body. 

SparkFun PWM Shield

Arduino Expansion Shield for Raspberry Pi B - DFRobot

Arduino is a huge ecosystem, so if there is a way to adapt the Raspberry Pi interface to Arduino pinning, you can create fantastic designs using the best of both worlds. This Adapter Board was created just for this.

SparkFun OpenLog

LCD Gráfico 128x64 STN LED Backlight

The 2WD mobile platform for Arduino is a small, low-cost mobile platform for use with a standard Arduino microcontroller . The robot comes as a kit that includes two drive motors, wheels (and rear caster), frame and all mounting hardware . The main structure and mechanical parts of a robot.

The Pololu USB to serial adapter is great for connecting microcontroller designs to a personal computer. The adapter uses 3.3 V signal levels so you can connect it directly to any microcontroller running at up to 5 V without the hassle of an RS-232 to TTL level converter.

Big Easy Driver

Box for Raspberry Pi in versions B2, B3 and B+ and Camera with external dimensions of 101x74x29mm. Assembled with zipper without the use of glue that allows disassembly at any time.

DFRobot Relay Shield  V2.1 is a completely new design which is capable of controlling 4 relays at a time.

SparkFun humidity sensor - HIH-4030

DC-DC converter waterproof. With input between 16 and 36VDC for 9V and up to 5A of output current.

This LED Matrix 24 × 8 display is specially designed for the FireBeetle series. It supports low power mode and scroll display. With HT1632C high-performance LED driver chip , each led has an independent register, which facilitates separate driving. Integrates a 256KHz RC clock, only 5uA in low power mode, supports 16-scale PWM brightness adjustment. This product also works with another Arduino microcontroller like Arduino UNO (same as DFRduino UNO).

The ESP8266 Thing is a breakout and development board for the ESP8266 WiFi SoC – a leading platform for Internet of Things (IoT) or WiFi-related projects. The Thing is low-cost and easy to use, and Arduino IDE integration can be achieved in just a few steps.

This is a basic breakout board for the FTDI FT232RL USB to serial IC. 

This DTMF Shield is a Dual-tone multi-frequency signaling module decoder for Arduino With it's audio connector you can decode the crazy funny noises common phones make.

This Load Sensor, sometimes called a strain gauge, is the same one found in digital bathroom scales. This sensor can measure up to about 110 pounds. 

Kit Chassis Romi from Polulu. Ideal for those who want to develop a remote controlled robot car, line follower, fire engine, etc.