1. The LC107-10 is a load cell sold by Omega (Data Sheet (Links to an external site.)). Answer the following:

a. What is the output of the load cell in Volts and how does it depend on the input (excitation) voltage - note range from 10V-15V? Comment on why the excitation voltage matters. Note mv/V is the output. Multiply this by the excitation voltage to get the FSO (full scale output of the sensor).

b. Calculate the contribution of errors from each of the following: linearity, hysterisis, repeatability, zero balance (offset).

c. What is the worst case temperature effect?

d. If you had to select hardware that could measure the load cell output. How many bits would you select to be more accurate than the load cell itself?

e. What would you gain from having an amplifier? What if you could amplify the output signal to 5V so you could measure with the arduino - what would the resolution be in terms of the voltage read by the arduino over its ADC bit count? In other words, how many pounds of force per bit of the arduino if amplified to 0-5V?

2. If you wanted to filter the signal, how would you do this? Google sallen-key filter and describe how you might use it.

4. If you wanted to digitally filter the signal in Arduino by using an averaging filter how would it improve the signal and how many averages would you take?

5. How many clock cycles would it take on the arduino to read the voltage and calculate the load? I am asking for you you to see how many clock cycles it would take to perform the analogRead and do the math to convert the signal to units of load. How fast could you sample this signal with the arduino? Note: Just add up the clock cycles to perform each line of code.

6. Run an example using the the ArduinoFFT (can get from library manager) code here (Links to an external site.) (you can copy and paste example into your sketch).

a. What are the window doing? Why do you care?

just do what is allowed.

thanks

Specifications Output 2 mV/V +10% FSO 10 Vdc Nominal, Excitation 15 Vdc Maximum Linearity 20.1% FSO Hysteresis 20.1% FSO Repeatability 0.05% FSO Zero Balance 21.0% FSO Operating Temperature -40 to 93C Range (-40 to 200F) Compensated Temperature 15 to 71C Range (60 to 160F) 0.009% FSO/C Thermal Effects - Zero (+0.005% FSO/F) +0.009% FSO/C Thermal Effects - Span (+0.005% FSO/F) Safe Overload 150% of capacity Ultimate Overload 300% of capacity Ingress Protection 1P40 Stainless Steel with Construction Materials Aluminum Side Cover Specifications Output 2 mV/V +10% FSO 10 Vdc Nominal, Excitation 15 Vdc Maximum Linearity 20.1% FSO Hysteresis 20.1% FSO Repeatability 0.05% FSO Zero Balance 21.0% FSO Operating Temperature -40 to 93C Range (-40 to 200F) Compensated Temperature 15 to 71C Range (60 to 160F) 0.009% FSO/C Thermal Effects - Zero (+0.005% FSO/F) +0.009% FSO/C Thermal Effects - Span (+0.005% FSO/F) Safe Overload 150% of capacity Ultimate Overload 300% of capacity Ingress Protection 1P40 Stainless Steel with Construction Materials Aluminum Side Cover