Load cell ampfilier-HX711-board hardware design
SolderedElectronics·Load-cell-ampfilier-HX711-board-hardware-design·CAD/V1.1.1/HX711.kicad_pcb
About the Load cell ampfilier-HX711-board hardware design
Load cell ampfilier-HX711-board hardware design is an open source PCB design by SolderedElectronics, published on GitHub under the TAPR-OHL-1.0 license. It is a 2-layer board measuring 22 × 22 mm, with 18 components from 12 distinct parts.
Other key parts include the HX711. By type, the board carries 6 capacitors, 5 resistors, 3 relays, 1 IC and 1 transistor.
It belongs with the dev boards & breakouts and sensors designs in this gallery.
From the project
Hardware design, BOM, gerbers and 3D files for Load-cell-ampfilier-HX711-board designed by Soldered Electronics.
The HX711 breakout allows you to easily read the weight value from a load-cell sensor (mass sensor). This small ADC is of great precision and is capable of measuring very small changes in the load-cell resistance, whose signals are amplified with the built-in amplifier. Subsequently, this same information is digitally transmitted to a microcontroller that simply converts the numbers obtained into the actual weight. That’s why this breakout is very useful for projects with scales or presence sensors, either for individuals or industry.

Main components on the Load cell ampfilier-HX711-board hardware design
Load cell ampfilier-HX711-board hardware design bill of materials (BOM)
18 components, 12 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | HX711 | SOP-16 | U1 |
| 1 | MMBT4403 | SOT-23-3 | Q1 |
| 2 | HOLE_3.2mm | HOLE_3.2mm | H1, H2 |
| 1 | HEADER_MALE_5X1 | HEADER_MALE_5X1 | K1 |
| 1 | HEADER_MALE_2X1 | HEADER_MALE_2X1 | K2 |
| 1 | HEADER_MALE_4X1 | HEADER_MALE_4X1 | K3 |
| 4 | 100nF | 0603C | C1, C3, C4, C5 |
| 2 | 10uF | 1206C | C2, C6 |
| 2 | 100R | 0603R | R1, R2 |
| 1 | 20k | 0603R | R3 |
| 1 | 8.2k | 0603R | R4 |
| 1 | 10R | 0603R | R5 |
Load cell ampfilier-HX711-board hardware design design files
The KiCad project lives in the SolderedElectronics/Load-cell-ampfilier-HX711-board-hardware-design repository on GitHub; these links point at the commit this page was built from.
Load cell ampfilier-HX711-board hardware design: common questions
How big is the Load cell ampfilier-HX711-board hardware design?
The Load cell ampfilier-HX711-board hardware design measures 22 × 22 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Load cell ampfilier-HX711-board hardware design?
18 components, from 12 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Load cell ampfilier-HX711-board hardware design design files?
From the SolderedElectronics/Load-cell-ampfilier-HX711-board-hardware-design repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Load cell ampfilier-HX711-board hardware design design in my own project?
Yes, under the terms of its TAPR-OHL-1.0 license, which SolderedElectronics chose for the repository.
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