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Qwiic Scale - NAU7802 module for tensometric beam - SparkFun SEN-15242
The module is based on a NAU7802 system enabling the reading of data from a strain-gauge beams. By connecting the model to the microcontroller, you can read the change in resistance of the beam with a small calibration, it is possible to make accurate measurements of weight. The board was equipped with clamp connectors and Qwiic connectors. It communicates using the I2C interface.
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Description of product: SparkFun Qwiic Scale module NAU7802
The module is based on aNAU7802system enabling the reading of data from a strain-gauge beams. By connecting the model to the microcontroller, you can read the change in resistance of the beam with a small calibration, it is possible to makeaccurate measurements of weight. The board was equipped withclamp connectorsand Qwiic connectors. It communicates using theI2Cinterface. It works with a voltage of3.3 V.
Botland is an official distributor of modules and accessories from SparkFun Electronics. This well known American maker provides a complete base for electronics projects. Our range holds original SparkFun Electronics products only.
When connecting the strain-gauge beam, the module is able to transfer the signal to one that can be read from the microcontroller you are using. NAU7802 is the ADCconverter with I2C output for amplifying and converting signals from the standard strain-gauge beam.
Pins from the module SparkFun NAU7802
The module communicates via the I2C interface. In addition, the module has the Qwiic connector which allows you to directly connect it tothe Qwiic shields.
| Pin | Description |
|---|---|
| GND | The ground of the system. |
| 3V3 | Supply voltage is 3.3 V. |
| SDA | The data line of the I2C bus. |
| SCL | The clock line of the I2C bus. |
| INT | The external interrupt. |
| AVDD | The regulator of the output voltage from 4.5 V to 2.4 V. |
| RED/E+ | The supply voltage is positive of the strain-gaugebeam. |
| BLACK/E- | The negative supply voltageof thestrain-gauge beam. |
| WHITE/A- | The negative line to connect thestrain-gauge beam. |
| GREEN/A+ | Positiveline for connecting thestrain-gauge beam. |
| B- | VIN2N - additional ADC channel, negative input. |
| B+ | VIN2P - additional ADC channel, positive input. |
NAU7802 module specification
- Supply voltage: 3.3 V (NAU7802: from 2.7 V to 5.5 V)
- ADC converter: dual-channel, 24-bit
- PGA of the profit
- Built-in temperature sensor
- The simultaneous rejection of 50 Hz and 60 Hz
- Programmable PGA profit: from 1 to 128
- Programmable range of ADC output data
- Range of external voltage of the difference reference from 0.1 V to 5 V
- Low energy consumption and programmable power management settings: up to 1 uA at rest
- 2x Qwiic connector
Useful links
| Name | Value |
|---|---|
| Width | 5 cm |
| Height | 8 cm |
| Depth | 1.7 cm |
| Weight | 0.006 kg |
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30 days to return, without giving a reason
If the product does not meet your expectations, you have 30 days from receiving the parcel to withdraw from the contract. The product only has to be complete. The right of return belongs to consumers (a purchase unrelated to business activity).
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If the product turns out to be faulty, you can make a claim under the guarantee or the statutory warranty. We handle claims without delay, at the latest within 14 working days of receiving the report together with the goods.
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Product information
This product is a component intended for further assembly or prototyping. It is not a finished product within the meaning of the product safety regulations.
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