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HX711 - amplifier for tensometers
Operational amplifier is designed to handle strain beams. The system is supplied with the voltage from 2.6 V to 5.5 V, communicates via a two-wire bus: the data line and a clock line.
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Description
Operational amplifier is designed to handle strain beams. The system is supplied with the voltage from 2.6 V to 5.5 V, communicates via a two-wire bus: the data line and a clock line.
Connection
The strain beams are supported through the so-called Wheatstone bridge, i.e. wires connected in the following way:
- E+ (Excitation+)- positive excitation or VCC (power supply)
- E- (Excitation-) - negative excitation or GND (ground)
- A- / A+ -- positive strengthening, a positive signal or a positive output
- B- / B+- the negative strengthening, the negative signal or a negative output
For communication with the microcontroller, e.g. Arduino, the system uses two lines: SCK and DT.
| Pin | Description |
|---|---|
| VCC | The supply voltage is from 2.6 V to 5.5 V. |
| DT | Data line of the communication bus. |
| SCK | Clock line of the communication bus. |
| GND | The ground of the system. |
E+ A- A+ B- B+ | Line to connect the strain-gauge beam. The description is above the picture. |
The product is compatible with Arduino |
Specification
- Supply voltage: 2.6 V to 5.5 V
- Number of channels: 2
- ADC converter: 24-bit
- Preamplifier: low noise 32 / 64 / 128
- Updated frequency: 10 Hz / 80 Hz
- Pins:openingsfor goldpin connectors - 2.54 mm(strap included)
- Operating temperature: -20 °C to 85 °C
- Module dimensions: 33 x 20 mm
Useful links
| Name | Value |
|---|---|
| Width | 8 cm |
| Height | 1 cm |
| Depth | 4 cm |
| Weight | 0.004 kg |
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The full delivery terms are on the page Delivery and payment.
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).
Complaints
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.
Question: How do I switch the circuit to 80Hz mode?
Instructions and documents
GPSR data
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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