Hx710

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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 some gereric code -. Please, could some people who have sucessfully got one of these to work read the comments and tell me if everything is correctly documented. 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. This would seem to support the claim that the chip can be run from as little as 2. Can you please post a circuit diagram?

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. Either way, I made the following diagram which I found helpful:.

These are the different configs:.

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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.

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:.

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This would seem to support the claim that the chip can be run from as little as 2. 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. Have a question about this project? Does the Hx hold this stale Data forever or does it pull the Data line back to high and collect new Data at regular intervals? These are the different configs:. When data is ready to send the Hx switches the Data line to low. So that others may benefit here's some gereric code -. I also question if people are getting confused and reporting the mirror image pinout because they mistake the vent hole for the registration marker. But the translation from the original Chinese to English is Can you please post a circuit diagram?

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.

Sorry, something went wrong. Summary of line states - Mode New replies are no longer allowed. 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. Have a question about this project? Already on GitHub? Please, could some people who have sucessfully got one of these to work read the comments and tell me if everything is correctly documented. I used a multimeter to determine the resistor network inside this pressure sensor. If 2 Control bits are sent - high, low, high, low and hold; a HxA will read its internal temperature instead of the external inputs until a different control is sent. Air pressure sensor Although some libraries are available which facilitate interacting with the HX, here I engage with it discretely to convey each step of the conversion and measurement process. Copy link. 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.