ORP (Oxidation-Reduction Potential) is a measure of oxidation capacity and reduction of the aqueous solution. Unlike a pH measurement that follows a logarithmic curve and therefore requires more calibration adjustments, O RP follows a linear relationship and does not need any instrument adjustments as well as electrode maintenance. ORP is a reliable method of measuring water quality and provides the operator with a unique measurement value.

The kit does not require any soldering and is recommended for anyone with a drive to learn more about Blynk and its uses. So if you are looking for a new challenge or a way to get in on the IoT craze, check out the SparkFun IoT Starter Kit with Blynk Board!

The Atlas Scientific pH circuit designs currently available on the Internet are outdated and use a significant number of overly complex analog components. Atlas Scientific has reinvented and refined the pH circuit of the past to a more modern and simple to use model.

Do you make time to talk to your Arduino? Maybe you should! The EasyVR Shield 3.0 is a voice recognition shield for Arduino boards integrating an EasyVR module. It includes all of the features of the EasyVR module in a shield form factor that simplifies connection to the Arduino main board and PC.

The Reader of Capacitive Fingerprint is a Module of Fingerprint standard designed for Secondary Development, allows a Verification of Fingerprint Fast and Stable.

Based on a STM32F105R8 High Speed ​​Digital Processor, combined with high security commercial Fingerprint Algorithm and advanced semiconductor sensor, the capacitive fingerprint reader becomes a simple yet intelligent integration module, providing features such as registration digital printing, image processing, resource location, model generation and storage, fingerprint matching and research, etc.

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

Microsoft and SparkFun have teamed up to bring you some IoT (Internet of Things) fun. The Microsoft Azure IoT Starter Kit for the SparkFun Thing Development Board has been designed to help you seamlessly connect your device to the cloud with Microsoft Azure IoT. 

Adafruit FONA - Mini Cellular GSM Breakout - SMA Version - v1

This barcode reader / scanner with CCD camera module is the perfect choice for your OEM design. It brings the benefits of barcode scanning to all types of OEM devices . You can use this cutting-edge scanning technology in projects such as kiosks, medical instruments, diagnostic equipment, vending machines...

At ElectroFun we have a few different GPS modules, but none that met all of our wishes - that's why we acquired this small GPS card. This is the Ultimate GPS Module.

SparkFun Venus GPS c SMA connector

O GP-735 é um receptor de antena inteligente GPS simplista, de alto desempenho e fácil de usar. Com sensibilidade de rastreamento de -162dBm e apenas 29 segundos de tempo de início após uma longa paragem, o GP735 é uma peça de tecnologia minúscula, porém poderosa. O design fino torna ideal para aplicações onde você não tem muito espaço para trabalhar.

This is the Multi-Chassis Basic 4WD Kit, an easy to assemble and use robot chassis platform. 

This is a simple three track magnetic card reader with serial output.

Sparkfun Temperature and Humidity Sensor- SHT15

This is the ID-20LA , very simple to use the RFID Innovations ID reader module. With a built-in antenna , the only protrusion is the 2mm pin spacer . Just power the module, use a 125kHz card , and get a serial chain output that contains the card's unique identification.