SEN-HX711-01 - Uncategorized Joy-It - Free user manual and instructions
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| Product Type | Load Cell Amplifier / ADC Module |
| Model | SEN-HX711-01 |
| Brand | Joy-It |
| Operating Voltage | 2.7V – 5.5V DC |
| Current Consumption | < 1.5 mA (typical) |
| ADC Resolution | 24-bit |
| Sample Rate | 10 or 80 SPS (selectable) |
| Differential Input Voltage Range | ±0.5V / ±20mV / ±40mV / ±80mV (programmable gain) |
| Gain | 32, 64, or 128 (programmable) |
| Interface | 2-wire serial (DOUT, PD_SCK) |
| Dimensions | Approx. 24 mm x 18 mm x 4 mm |
| Weight | Approx. 2 g |
| Operating Temperature Range | -20°C to +85°C |
| Main Functions | Amplify and digitize load cell signals; interface with microcontrollers (e.g., Arduino, Raspberry Pi) |
| Maintenance & Care | Keep dry; clean with a soft, dry cloth; avoid static discharge |
| Safety Information | Do not exceed voltage ratings; avoid short circuits; handle with care to prevent ESD damage |
| Spare Parts & Repairability | No user-serviceable parts; replace module if defective |
| General Information | Designed for precise weight measurement; compatible with most strain-gauge load cells |
Frequently Asked Questions - SEN-HX711-01 Joy-It
How do I connect the SEN-HX711-01 to a load cell?
Connect the load cell wires to the HX711 module: E+ (red), E- (black), A+ (white or green), A- (green or white). Refer to your load cell datasheet for exact color codes.
What is the operating voltage of the HX711 module?
The module works with a supply voltage from 2.7V to 5.5V DC. It is commonly powered with 5V from an Arduino or 3.3V from a Raspberry Pi.
What is the accuracy of the HX711?
The HX711 has a 24-bit ADC, providing high resolution. Accuracy depends on the load cell and calibration, but typical non-linearity is 0.1% of full scale.
How can I change the sample rate?
The default sample rate is 10 SPS. To select 80 SPS, tie the RATE pin (if available) to VCC. On most modules, this is not broken out, so it remains 10 SPS.
How do I calibrate the HX711 with a known weight?
Use a library (e.g., HX711 Arduino library). First read the raw value with no load, then place a known weight and record the reading. Calculate the scale factor = (weight) / (reading - tare).
Can I use the HX711 with an Arduino?
Yes. Connect DOUT to a digital pin (e.g., D3) and PD_SCK to another digital pin (e.g., D2). Use the HX711 Arduino library for easy communication.
What is the difference between the SEN-HX711-01 and other HX711 modules?
The SEN-HX711-01 is a breakout board with the same HX711 chip. Differences may include pinout, onboard components (e.g., capacitors), or form factor. Functionality is identical.
Why is my HX711 reading unstable?
Unstable readings can be caused by loose connections, electrical noise, or insufficient power supply filtering. Add a 100µF capacitor across VCC and GND, and ensure all wires are secure.
What is the maximum load I can measure?
The max load depends on the load cell used. The HX711 can handle differential input voltages up to ±80mV (with gain 32), so the load cell's output must stay within that range.
How do I read the output data from the HX711?
The HX711 outputs 24-bit two's complement data via a serial interface. Data is valid when DOUT goes low. Pulse PD_SCK 25 times to read 24 bits (or 27 for channel B/gain). Many libraries handle this automatically.
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USER MANUAL SEN-HX711-01 Joy-It
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Product information
Brand : Joy-It
Model : SEN-HX711-01
Category : Uncategorized