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High accuracy probe: Built for precise pH measurement work
The Jumper Wire 9Pin Dual-Female - 200mm is compatible with any electronic component that has a 9-pin male connector
Compact size: 66 * 61MM
desire more RAMs
A USB connection for programming and power
Arduino-Compatible Mega WiFi R3 - ATmega2560 + ESP8266 Combo aaa High accuracy probe: Built forArduino Mega + ESP8266 WiFi on One Board The All In One WiFi Mega The Mega WiFi R3 ATmega2560 + ESP8266 combines the full power of the Arduino Mega 2560 with an onboard ESP8266 WiFi module giving you 54 digital I O pins, 16 analog inputs, hardware UART ports, and WiFi all on a single Arduino compatible board. For projects that outgrew the Arduino Uno but also need WiFi robotics with many sensors, CNC controllers, large relay arrays, multi serial
