Hx710

I'm the type that wants to understand how a system works rather than blindly copy existing code or a library that I can't understand. So that others may benefit here's hx710 gereric code - hx710.

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub? Sign in to your account. This library easily works with the HX for basic functionality.

Hx710

According to the datasheet it can be powered by a 3. The datasheet indicates this device can be run from a 3. The datasheet provides an example circuit demonstrating how this ADC can be used to measure weight from a scale sensor:. To get a better idea of how this sensor works it would be helpful to locate its product number. I had a hunch it was beneath the part so I desoldered it, and indeed I found part identification information. The pressure sensor is labeled as a PSGS but unfortunately I struggled to find a quality datasheet for it. I did find some now-deleted images from an AliExpress listing showing the differences between the base model and the R and S variants. This seems to be a fairly standard differential pressure sensor design using a pair of voltage dividers where the pressure is a function of the difference in voltage at the two mid-points a Wheatstone bridge. I used a multimeter to determine the resistor network inside this pressure sensor. Interestingly I found that pin 4 was not connected, which is opposite of many other designs I find online where pin 5 is not connected. It is critically important to get this right if your goal is to design a PCB around this component. I also question if people are getting confused and reporting the mirror image pinout because they mistake the vent hole for the registration marker.

HX datasheet English.

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The HXB Air Pressure Sensor Module monitors the air's pressure in the range of 0 to 40 kilopascals kPa and turns it into an electrical impulse which microcontrollers or other electrical gadgets can interpret and read. It is a common and frequently utilized sensor in a wide range of applications that demand precise pressure sensing, including weather monitoring, industrial control systems, and medical equipment. The HXB device is a piezoresistive pressure sensor which determines pressure by detecting variations in electrical resistance produced by pressure-induced displacement of a sensing element. The module is made up of a pressure sensing element, a signal conditioning circuit, and an output amplifier. The sensor chip is a tiny, thin-film device having a diaphragm and piezoresistive components. The signal conditioning circuit boosts and purifies the electrical signal from the sensing element, and the output amplifier generates a voltage or current proportionate to the pressure detected by the sensor. The HXB sensor module offers several advantages that enable it to be a good option for a wide range of applications. These are some examples:. Broad pressure range: The module can detect pressure from 0 to 40kPa, making it appropriate for a broad range of low-pressure sensing applications. Compact size: The module is modest in size and may simply be incorporated into different size and shape, which makes it ideal for projects that require little space.

Hx710

A load cell converts a force into an electrical signal that can be measured. The electrical signal changes proportionally to the force applied. There are different types of load cells: strain gauges, pneumatic, and hydraulic. Strain gauge load cells are composed of a metal bar with attached strain gauges under the white glue in the picture above. A strain gauge is an electrical sensor that measures force or strain on an object. The change of the resistance is proportional to the load applied, which allows us to calculate the weight of objects. Usually, load cells have four strain gauges hooked up in a Wheatstone bridge as shown below that allow us to get accurate resistance measurements. For a more detailed explanation of how strain gauges work, read this article. Because the changes in strain when weighting objects are so small, we need an amplifier. The HX amplifier is a breakout board that allows you to easily read load cells to measure weight.

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Can you please post a image s of your project? From what I understand all of the config is done by sending different amounts of clock pulses when reading. Please, could some people who have sucessfully got one of these to work read the comments and tell me if everything is correctly documented. Either way, I made the following diagram which I found helpful:. Additionally - many of the clone modules use counterfeit chips, sometimes with slightly different names and different pin outs, but they all respond to the Hx comms commands correctly. After all that's what they are there for. Interestingly I found that pin 4 was not connected, which is opposite of many other designs I find online where pin 5 is not connected. Air pressure sensor Already on GitHub? Hi, Have you tried your code in the real world?

I am using HXb pressure sensor with arduino. The range of pressure sensor is 0 - mbar. Like others I am using HX library with the setup.

So that others may benefit here's some gereric code -. The animated plot is what it looks like when I blow puffs of air on the sensor. When valid Data is available then within 0. If 3 Control bits are sent - high, low, high, low, high, low and hold; the Hx will do conversion of the external inputs at a faster, and less accurate, rate. More frustratingly, code in many libraries refer to this as gain , which is incorrect. After all that's what they are there for. Pressure Sensor Guide by T. Both Control and Data are low when the conversion is completed and valid data is available. I had a hunch it was beneath the part so I desoldered it, and indeed I found part identification information. Or what doesn't it do? Either way, I made the following diagram which I found helpful:. The Hx has an extra analog input and additional control pins, but the basic data reading is the same. After collecting 24 Data bits the microcontroller must send 1, 2 or 3 Control bits in the same manner as the data collection clocking bits -. TomGeorge May 27, , am 4. This library easily works with the HX for basic functionality.