Arduino Nano - Atmega328p Microcontroller, 5v Operating Voltage, 16 Mhz Clock Speed, 14 Digital I/o Pins, 8 Analog Inputs, 16 Kb Flash Memory, Compact 0.73" X 1.70" Size

Arduino UNO R3 SMD Board - 5V Microcontroller, 16 MHz Clock Speed, 32 KB Flash Memory, 14 Digital I/O Pins, Blue Color | Ideal for DIY Projects, Prototyping, AVR Programming

Arduino PRO Mini Board - 20 MHz, 20 MIPS Throughput | Blue, 23 Programmable I/O Lines, 10-Bit ADC, Multiple Timers and PWM Channels

Raspberry Pi Zero Board

Green Raspberry Pi Model B

Arduino Nano - ATmega328P Microcontroller, 5V Operating Voltage, 16 MHz Clock Speed, 14 Digital I/O Pins, 8 Analog Inputs, 16 KB Flash Memory, Compact 0.73" x 1.70" Size

Arduino Mega 2560 R3 - 256 KB Flash Memory, 54 Digital I/O Pins, 16 Analog Inputs, 5V Operating Voltage, Blue Silkscreen

Arduino Uno R3 Board With USB - 5V Operating Voltage, ATmega328 Microcontroller, 14 Digital I/O Pins, 6 PWM Outputs, 6 Analog Inputs, 32 KB Flash Memory, Blue Soldermask

Arduino Nano R3 Microcontroller Board - ATmega328P, 16 MHz Clock Speed, 14 Digital I/O Pins, 8 Analog Inputs, 5V Logic Level | Blue Silkscreen Design

Blue Wifi Esp8266 Arduino Shield

Arduino Ethernet Shield - IEEE802.3af Compliant DC/DC Converter, Low Output Ripple 100mVpp, 36V to 57V Input, 1500V Isolation, High Efficiency 75% Load, Blue