| Electronics > Beginners |
| Load Cell measuring and info display |
| (1/1) |
| BoomENGR:
Hey, I am a college student working on designing and building a rocket thrust tester. I need an affordable load cell and a way to display the information on a force vs time graph on my laptop. The rockets will be produceing around 10 to 14N of thrust. I need it to have a fairly high readings per second. Any suggestions will be appreciated, thank you! |
| Doctorandus_P:
I think 1 reading every 2 minutes is "farily high". What do you think is "fairly high"? |
| Doctorandus_P:
Bit more serious answer. HX711 is a very popular and cheap chip and it can sample your signal at a rate of upto 80sps. A lot of simple kitchen scales have a loadcell in them in the form of an aluminimum bar with holes & wires. https://duckduckgo.com/?q=loadcell+hx711&iar=images&iax=images&ia=images ADS1220 or ADC1115 or similar chips might increase your resolution / measuring speed. https://duckduckgo.com/?q=ADC+PGA+SPI&iar=images&iax=images&ia=images Also plenty of mechanical examples from youtube vids and complete sourcecode from github. |
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