SparkFun Load Cell Amplifier Board Accurate Weight

Description

Product Overview

The SparkFun Load Cell Amplifier Board is designed for precise weight measurement applications, featuring a 24-bit dual-channel analog-to-digital converter (ADC) that ensures high accuracy in reading load cells. With programmable gain amplifier (PGA) settings from 1 to 128 and simultaneous 50Hz and 60Hz rejection, it minimizes noise for reliable data. The board operates at 3.3V, compatible with a wide voltage range of 2.7V to 5.5V for the NAU7802 chip, and includes an external differential reference voltage from 0.1V to 5V. Constructed with durable components, it measures 1.06 x 1.46 x 0.63 inches and weighs 0.35 ounces, making it compact and portable. Key specifications include programmable ADC data output rates, low power consumption with standby current under 1uA, and programmable power management options for efficient operation.

Usage

This amplifier board is ideal for industrial environments, laboratories, and DIY projects where accurate weight measurement is critical. It is commonly used in scale systems, force measurement setups, and prototyping applications that require integration with microcontrollers. Target audiences include engineers, researchers, and hobbyists working on industrial automation, scientific experiments, or custom weighing solutions. The board’s Qwiic connectors allow for quick daisy-chaining and prototyping without soldering, reducing setup time and errors in educational or professional settings.

Why Choose Us

SparkFun Electronics is renowned for high-quality electronic components, and this amplifier board stands out with its ease of use and precision. The polarized Qwiic connectors prevent incorrect connections, enhancing reliability, while the 24-bit ADC provides superior resolution compared to standard alternatives. With programmable features and low power consumption, it offers flexibility and efficiency, backed by SparkFun’s commitment to durability and customer support, ensuring long-term performance in demanding applications.

Key Features

• 24-bit dual-channel ADC for high-accuracy weight measurement and noise reduction.
• Qwiic connectors enable fast, solder-free prototyping with daisy-chaining capability.
• Programmable gain amplifier with gains from 1 to 128 for customizable sensitivity.
• Low power consumption and programmable power management for energy efficiency.
• Simultaneous 50Hz and 60Hz rejection to ensure stable readings in various environments.

FAQ

What is the operating voltage range for this board?

The board operates at 3.3V, with the NAU7802 chip supporting a range from 2.7V to 5.5V, allowing compatibility with various power sources.

Can I use this amplifier with any load cell?

Yes, it is designed to work with most standard load cells by reading changes in resistance, though calibration may be needed for optimal accuracy.

How do the Qwiic connectors benefit prototyping?

Qwiic connectors allow for quick, tool-free connections, reducing setup time and the risk of errors, making it ideal for rapid prototyping and educational projects.

What is the typical power consumption in standby mode?

Standby current is less than 1 microampere, ensuring minimal power draw when not in active use, which is beneficial for battery-operated applications.

Is soldering required for installation?

No, the board requires no soldering thanks to the Qwiic connectors, simplifying assembly and making it accessible for users of all skill levels.