Hello,
I'm doing a project where im testing the thrust of a rocket motor. Done a few tests with hx711 adc module until my motor blew up and had an opportunity to switch it up a little. I'm using esp32 and I have a hx711 weight pressure sensor with a display. My problem is:
I can make the display work and show me weight readings, however, i need to be able to see it on my pc screen too. Any possible way I can do it?
Modify the code. Post it, using code tags, after reading the "How to get the best out of this forum" post, linked at the head of every forum category.
Please post links to products, rather than pictures, and a circuit diagram. Hand drawn is fine.
There is no code since the hx711 display module can be calibrated with its buttons.
The board I've bought from here: https://www.aliexpress.com/item/4001042272151.html
Serial port and print statement is the regular way. Use any serial terminal to display the received data.
Falsely advertised as HX711.
The board uses a stripped down version of the HX711, the HX710.
The HX710 is connected to a 15W408AS MCU, which does all the processing.
I guess you can get the data from it's TX/RX pins. 5volt-logic, so you shouldn't connect it directly to a 3.3volt-logic ESP. Baud rate and format? Your guess is as good as mine.
Leo..
Datasheets on the module and cell?
The loadcell sensor in the pic looks like a 4-wire bar with a wheatstone bridge, while in the drawing it looks like a 3-wire cell with a half-bridge and odd wiring.
Does your module have a serial out port?
Look at the image, four pins at the bottom. Says TTL.
Leo..
Thanks. I followed the link to Aliexpress, and saw in the comments that one person said:
Is what is shown, performs well the processes described and the sending of data by port works well. It would be good if it could be controlled as the tare and calibration by the serial port but still works very well. -- j***a
I'm pretty green regarding electronics, so let me clarify what I understood. The rx/tx pins i connected to tx/rx, and the hx710 module i have powered through a seperate power source (5volts). Now the IDE part. Do I need some sort of code or a simple testing example can be used?
Before I'd hook up the stand-alone board to an Arduino, I'd hook it up to a computer with a terminal program and figure out what baud rate it works at.
You want to document the hardware and software communication before you hook it up to your arduino.
As said, you shouldn't connect TX/RX directly to an ESP32, because voltage levels are different.
If you do, then you run the risk of damaging the ESP32. As for the code that comes out of that board, YOU have to work that out, which is not beginner's stuff.
Leo..
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