Output Voltage From the Wheatstone Amplifier Shield

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1

Hello good people of RobotShop,

I’ve used the Wheatstone amplifier shield for a few experiments and projects (for example, Tradeoffs of estimating reaction time with absolute and relative thresholds - PubMed). More recently, I’ve been trying to understand the voltage output signal from the Wheatstone. I’ve noticed that it ranges from 0 to 3.22 V. I had assumed that the output voltage would range from 0 to 5 V.

Is the range of the output voltage related to one of the supply voltages of 3.33 V? Is it related to the default gain of 495.0?

I would appreciate any help. I would like to know how the range of the voltage output works so that I can optimize my signal chain.

Thanks,

Jarrod

5

Hi Jarrod,

You might want to have a look at the user guide PDF (attached) for a better explanation.
SF_SG_usermanualv1.2.pdf (570.5 KB)

There are a few things to understand like the Gain that’s adjustable.

All the best,

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