SparkFun Qwiic Scale - NAU7802

Rating:
100% of 100
SKU: SEN-15242 Brand: Sparkfun
The SparkFun Qwiic Scale is a small breakout board for the NAU7802 that allows you to easily read load cells to accurately measure the weight of an object. By connecting...
$27.80 AUD, inc GST
$25.27 AUD, exc GST

Available with a lead time
Expect dispatch between Aug 01 and Aug 05

Quantity Discounts:

  • 10-25 $24.52 (exc GST)
  • 25+ $24.01 (exc GST)
- +

0 from local stock, 1 supplier stock; your order will dispatch between Dec 1 to Dec 10. And yes, stock levels and lead times are accurate!

Shipping:

  • $6+ Standard (5+ days*, tracked)
  • $10+ Express (2+ days*, tracked)
  • FREE Pickup (Newcastle only - must order online*)

Shipping costs may increase for heavy products or large orders.

Exact shipping can be calculated on the view cart page.

*Conditions apply, see shipping tab below.

The SparkFun Qwiic Scale is a small breakout board for the NAU7802 that allows you to easily read load cells to accurately measure the weight of an object. By connecting the board to your microcontroller you will be able to read the changes in the resistance of a load cell and, with some calibration, you'll be able to get very accurate weight measurements. This can be handy for creating your own industrial scale, process control or simple presence detection. Utilizing our handy Qwiic system, no soldering is required to connect it to the rest of your system. However, Sparkfun still have broken out 0.1"-spaced pins in case you prefer to use a breadboard.

By connecting a load cell to the Qwiic Scale you will be able to translate sensor data into something your microcontroller can read. The NAU7802 is an ADC with built in gain and I2C output to amplify and convert the readings from a standard load cell. A load cell is basically a device that translates pressure or force into electrical signals. In most cases this signal is very small and needs to be amplified. There are many popular chips that read the change and amplify it, but the NAU7802 goes one step further and converts everything to a true I2C output (attached to a Qwiic connector).

The board provides a four spring terminal to connect your load cell with no soldering required. In addition to the I2C pins, the board also breaks out an interrupt pin and AVDD to the edge of the board. The differential input signals (plus a second set of input signals) are broken out to the middle of the board, as well.

The SparkFun Qwiic connect system is an ecosystem of I2C sensors, actuators, shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This reduces the amount of required PCB space, and polarized connections mean you can't hook it up wrong.

Get Started with the Qwiic Scale Hookup Guide

Features

  • Operating Voltage: 3.3V (NAU7802: 2.7V-5.5V)
  • 24-bit Dual-Channel Analog to Digital Converter
  • Programmable Gain Amplifier
  • On-chip temperature sensor
  • Simultaneous 50Hz and 60Hz rejection
  • Programmable PGA gains from 1 to 128
  • Programmable aDC data output rates
  • External differential reference voltage range from 0.1V to 5V
  • Low Power Consumption and Programmable Power Management Options
    • <1uA standby current
  • 2x Qwiic Connectors

Documents

Product Comments

Exact shipping can be calculated on the view cart page (no login required).

Products that weigh more than 0.5 KG may cost more than what's shown (for example, test equipment, machines, >500mL liquids, etc).

We deliver Australia-wide with these options (depends on the final destination - you can get a quote on the view cart page):

  • $3+ for Stamped Mail (typically 10+ business days, not tracked, only available on selected small items)
  • $6+ for Standard Post (typically 6+ business days, tracked)
  • $10+ for Express Post (typically 2+ business days, tracked)
  • Pickup - Free! Only available to customers who live in the Newcastle region (must order online and only pickup after we email to notify you the order is ready). Orders placed after 2PM may not be ready until the following business day.

Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.

Some batteries (such as LiPo) can't be shipped by Air. During checkout, Express Post and International Methods will not be an option if you have that type of battery in your shopping cart.

International Orders - the following rates are for New Zealand and will vary for other countries:

  • $11+ for Pack and Track (3+ days, tracked)
  • $16+ for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount will increase based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

Unit 18, 132 Garden Grove Parade
Adamstown
NSW, 2289
Australia

Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.

Have a product question? We're here to help!

Write Your Own Review

Videos

View All

Guides

How to use Force Sensitive Resistors with a Raspberry Pi and a ADS1015 ADC

Force-sensitive resistors (FSR) are remarkable electrical components and are proper unsung heroes i...
Force-sensitive resistors (FSR) are remarkable electrical components and are proper unsung heroes i...

The Maker Revolution

The Maker Revolution celebrates the creation of new devices and the modification of existing ones - ...
The Maker Revolution celebrates the creation of new devices and the modification of existing ones - ...

Getting Hands-on with Sensors

What good is a robot if it can’t interact with the environment around it? Sensors are the back...
What good is a robot if it can’t interact with the environment around it? Sensors are the back...

Digital to Analogue Conversion with Raspberry Pi

Raspberry Pi right? It’s amazing! Raspberry Pi has taken the world by storm and changed the w...
Raspberry Pi right? It’s amazing! Raspberry Pi has taken the world by storm and changed the w...

Projects

WhyzaGC - Feather ESP32 addon to the MightyOhm Gieger Counter

This project is about adding a wireless Adafruit Feather HUZZAH ESP8266 or ESP32 v2 with Adafruit F...
This project is about adding a wireless Adafruit Feather HUZZAH ESP8266 or ESP32 v2 with Adafruit F...
Feedback

Please continue if you would like to leave feedback for any of these topics:

  • Website features/issues
  • Content errors/improvements
  • Missing products/categories
  • Product assignments to categories
  • Search results relevance

For all other inquiries (orders status, stock levels, etc), please contact our support team for quick assistance.

Note: click continue and a draft email will be opened to edit. If you don't have an email client on your device, then send a message via the chat icon on the bottom left of our website.

Makers love reviews as much as you do, please follow this link to review the products you have purchased.