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- SparkFun Load Cell Amplifier - HX711
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Item #:
17034071
SparkFun Load Cell Amplifier - HX711
85% of respondents would recommend this to a friend
Item #:
17034071
€ 20
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The SparkFun Load Cell Amplifier allows you to easily read load cells to measure weight and get very accurate weight measurements.
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What Stands Out
High Sensitivity
The HX711 offers precise measurement capabilities, making it ideal for applications requiring accurate weight detection, such as digital scales and pressure sensors.
Integrates Easily
This amplifier is designed for seamless integration with various microcontrollers, simplifying your project setup and reducing development time for hobbyists and professionals alike.
Cost-Effective Solution
With its competitive pricing and robust performance, the HX711 provides excellent value for those looking to enhance their projects without breaking the bank.
Product Details
- Small breakout board for the HX711 IC
- Allows easy reading of load cells for weight measurement
- Separate analog and digital supply with added inductor and filter capacitor
- Uses two-wire interface (Clock and Data) for communication
- Compatible with various microcontroller GPIO pins
- ROHS Compliant
- Load cells use four-wire Wheatstone bridge configuration
- Colors of load cell wires: RED, BLK, WHT, GRN, YLW
- YLW pin acts as optional input for grounding and shielding against EMI
- Slight variations in load cell color coding possible
- Operation voltage: 2.7V–5V
- Operation current: [missing information]
| Voltage | 5 volts |
| Maximum Supply Voltage | 5 volts |
| Minimum Supply Voltage | 2.7 volts |
| Mounting Type | Surface Mount |
| Item Dimensions | 1.18 x 0.91 x 0.2 inches (3 x 2.3 x 0.5 cm) |
| Specification Met | Nist |
| Manufacturer | Cool Components |
| Model | SEN-13879 |
| Brand Name | SparkFun |
| Number of Items | 1 |
| Unit Count | 1 Count |
| Global Trade Identification Number | 06955900326450 |
| UPC | 717520030058 602401874688 |
| Item Weight | 0.01 kg |
| Part Number | SEN-13879 |
| Item dimensions L x W x H | 1.18 x 0.91 x 0.2 inches (3 x 2.3 x 0.5 cm) |
Who Should Buy?
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DIY Electronics Projects
Ideal for hobbyists and makers creating weight measurement tools or scales in their projects using Arduino or Raspberry Pi.
-
Academic Research
Useful for students and researchers requiring precise weight measurements for experiments in fields like physics or engineering.
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Prototyping
Great for engineers and designers needing a reliable weight sensing solution during product development of scales or related devices.
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Industrial Applications
Not suitable for industrial-grade applications requiring high durability and precision beyond typical load scales.
Product Description
SparkFun Load Cell Amplifier - HX711
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is the Load Cell Amplifier - HX711 used for?
Answer: The Load Cell Amplifier - HX711 is primarily used to amplify the signals from load cells for accurate weight measurement. It is crucial in applications like digital weighing scales, where precise readings are required. By converting the small voltage changes from the load cell into a digital signal, the HX711 enables microcontrollers to process and display weight easily. It’s commonly found in projects ranging from kitchen scales to industrial weighing systems, making it a versatile component in both professional and hobbyist applications. -
Question:
How does the HX711 connect to a microcontroller?
Answer: The HX711 connects to a microcontroller typically via the Serial Peripheral Interface (SPI) or I2C protocols. It has two main data outputs: the 'Data' pin, which sends the digital signal, and the 'Clock' pin, which synchronizes the data readouts. This connection allows for seamless data transfer and processing. In scenarios like building a scale with an Arduino, understanding these connections is essential for setting up the system properly and ensuring accurate measurements. -
Question:
Can the HX711 be used with different types of load cells?
Answer: Yes, the HX711 can be used with various types of load cells, including single-point, shear beam, and compression load cells. This versatility makes it suitable for diverse applications like DIY weight measurement projects or industrial scales. It’s vital to match the load cell’s specifications with the HX711 to ensure optimal performance and accuracy of measurements. For instance, when designing a custom scale, knowing the load cell type helps select the right configuration for your project. -
Question:
Is additional calibration needed when using HX711?
Answer: Yes, calibration is necessary to ensure that the HX711 provides accurate readings. Calibration involves comparing the weight measurements obtained from the load cell with known weights and adjusting the scaling factor accordingly. This process is crucial, especially in applications requiring high precision, such as laboratories or healthcare devices. Users often perform this calibration step after installing the system for the first time or whenever there’s a significant temperature change affecting the setup. -
Question:
What voltage does the HX711 require?
Answer: The HX711 operates typically on a voltage range of 2.6V to 5.5V, making it compatible with most microcontrollers. This wide operating range allows it to be used in various devices without needing separate power supplies. Many hobbyists find it easy to integrate with Arduino or Raspberry Pi, which usually operate at 5V or 3.3V. Ensuring that your power supply is within this range is essential for maintaining the functionality and performance of your measurement system. -
Question:
What type of output does the HX711 provide?
Answer: The HX711 outputs digital signals representing the weight measurements it processes. It reports data through a serial output (digital) to the microcontroller, which can then interpret and display this information. This digital output is advantageous in reducing noise and improving accuracy compared to analog signals. Many users opt for this chip in their electronic scales or weighing systems because of this capability, simplifying the integration into various electronics projects. -
Question:
What is the typical sampling rate of the HX711?
Answer: The HX711 offers a sampling rate of 10 Hz to 80 Hz, depending on the configuration. Users can select the desired rate to balance between speed and precision; a higher rate allows for faster measurements but might compromise stability. In practical scenarios, for most applications like kitchen scales, a 10 Hz sampling rate is often sufficient while still providing quick and accurate reading updates. However, for precision balances, using the maximum sampling rate may be preferred. -
Question:
Can the HX711 interface with Arduino boards?
Answer: Absolutely, the HX711 is commonly used with Arduino boards due to its ease of integration and compatibility. There are readily available libraries and examples specifically designed for Arduino, making it simple for users to set up their load measuring projects. This pairing is widely used in educational settings and DIY projects, such as creating your own weight scale or pressure sensors, allowing individuals to gain hands-on experience with electronics and programming. -
Question:
How do I troubleshoot a non-responsive HX711?
Answer: If your HX711 is non-responsive, first ensure all connections are secure and correctly wired according to your load cell and microcontroller specifications. Check the power supply voltage; an inadequate supply can hinder functionality. Additionally, validating the code from your microcontroller against reliable examples can help identify programming issues that may cause unresponsiveness. Utilizing a multimeter can help test the load cell and HX711 connection in case of signal failures. -
Question:
Where can I buy Load Cell Amplifier - HX711 in San Marino?
Answer: You can purchase the Load Cell Amplifier - HX711 from Ubuy in San Marino. Ubuy offers a wide range of electronic components, including this amplifier, allowing you to find it easily. They provide detailed product descriptions, user reviews, and competitive pricing, ensuring you make an informed purchase decision.
SparkFun Amplifiers Editorial Review
The SparkFun Load Cell Amplifier - HX711 has received a mix of positive and negative feedback from customers. Some users have found it to be a good product that worked well with Arduino and was perfect for small scale applications. However, there were complaints about not receiving the exact product that was advertised, with some customers receiving a different board altogether. Overall, there is a divide in the customer experience with this product, with some users praising its performance and others expressing disappointment over not receiving the expected item.
Customer Reviews & Ratings
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Pros
- Good performance with Arduino
- Perfect for small scale applications
Cons
- Some customers received a different board than the one advertised
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€ 20
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Features & Benefits
- Easily read load cells to measure weight
- Get very accurate weight measurements
- Can be used to create industrial scales, process control, or simple presence detection
- HX711 uses two-wire interface for communication
- Load cells use four-wire Wheatstone bridge configuration
- Simultaneous 50 and 60Hz supply rejection
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