Using Arduino nano and smowo rw-st01A to measure thrust

Official Hardware Nano Family Classic Nano
1

I have an Arduino nano and a Smowo RW-ST01A Load Cell Amplifier and I want to be able to take continuous thrust measurements of a rocket fuel cell. I'm very new to this kind of electronics. Can someone guide me in the right direction? Thank you.

2

Continuous? No, but can be quite rapidly read. Do you have a data sheet on the load cell and amplifier that show it's response time for changes?

3

You would setup your amplifier for a 0 to 5V output. Connect:

  • ground of the amplifier to the ground of the Arduino
  • 5V output of the amplifier to an analog input of the Arduino

CAUTION:

In doing so you will be connecting the ground of power supply of the amplifier to the ground of the Arduino. These may not like to be connected due to power supply characteristics. Unless you know the two grounds are at the same potential (voltage) or they can be I would connect them with a very small 100 ohm resistor. If the voltage across the resistor is near zero you are probably OK if not the power supply incompatibility will have to be solved.

I would start with the Arduino example for analog input to test your setup.

4

Thank you! I really just need to know the best way to program my Arduino now.

5

See post #3.

6

Start with the Arduino example for analog input.

7

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