Log and Plot Weight Data with PhidgetBridge | RobotShop Community

An easy tutorial to show you how to log and plot weight measurements from a Load Cell using the PhidgetBridge and the corresponding FlowBotics App.


This is a companion discussion topic for the original entry at https://community.robotshop.com/blog/show/log-and-plot-weight-data-with-phidgetbridge

A question about data logging

@MrRyckman You can post your question on the forum and we will be happy to reply to it.

is it possible to have a running average weight along with a running maximum weight and a running frequency rate?

@john The FlowBotics App for Phidgets Wheatstone Bridge Sensor Interface doesn’t have a rolling average or a rolling maximum weight. You can do this on your Google Sheet. Here is an example. The running frequency rate is fixed through the app.

thank you I will look into this as a solution.

the PhidgetBridge says its capable of 125 samples a second but the logging is only 20 samples a second can that be changed?

@dan: Yes, it could most likely be done. That being said, you would need to modify the app using FBS (FlowBotics Studio).

What is the highest sampling rate that this software can log? Is it really just 20 Hz. Is 100 Hz possible? Thank you!

@kip Currently the log feature operates at up to 0.05s. The Phidgets Wheatstone interface can operate from 8ms to 1000ms in 8ms increments.

Q1 Can you balance the bridge?
Q2 What is the bit-depth, full-scale?

@MARK The bridge cannot be balanced with the FlowBotics App for Phidgets Wheatstone Bridge Sensor Interface. The differential voltage resolution per channel is 24 bits, we invite you to read through the PhidgetBridge Wheatstone Bridge Sensor Interface datasheet here for more information.