Questions tagged [mems]

Microelectromechanical systems (MEMS) are very small electromechanical devices. Common devices made using the technology include accelerometers, gyroscopes and microphones.

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Sampling DC and AC components of capacitive sensor

I'm using a MEMS capacitive pressure sensor SCB10H. As I understand it, I can wire it up in one of two ways. Either I can measure the absolute capacitance using a chip like the TI FDC1004. In this ...
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Best possible specs for a MEMS mic in 2014?

I want to use the best MEMS mic that's on the market today (June 2014) in terms of audio quality. Since I know that "shopping" questions are forbidden, I'll phrase it like this: What are considered ...
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Durability of SMD MEMS pressure sensors in pure oxygen enviroment

I have a question regarding durability/reliability of COTS SMD mems pressure sensors in oxygen rich (basically 100%) atmosphere under pressure of 1bar/1atm and temperature around 20C/293K. Sensor ...
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STM32 MEMS microphone - weird output

I have an STM32f407vgt development board that has a MEMS microphone (MP45DT02) on it. I aim to take processable data from this microphone. STM32 provides PDMtoPCM conversion library and I2S ...
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Frequency response of accelerometer MMA7361L

In order to create the model of the MEMS accelerometer MMA7361L I'm going to need the frequency response of it, but I don't have access to the university lab to use the oscilloscope because of the ...
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MPU 6050 accelerometer generating gaussian noise with strange gaps

I was using an GY-521 accelerometer/gyroscope module in order to provide inertial tracking. The GY-521 interfaces with an Arduino which sends data over a serial connection. I convert these values into ...
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43 views

Capacitance calculation of comb-drive actuator

I just want to make sure that I am performing this calculation correctly... From this COMSOL study, I gathered the following info... $$C_t = N\frac{\varepsilon_o\varepsilon_rl_ot}{d}$$ $$C_f = \...
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379 views

Understanding Pressure MEMS Technical Information (Relative and Absolute Accuracy)

In my research, I use smartphones pressure sensor data, and I need to understand their errors and limitations. I found the technical chart for the sensor: But I don't really understand the meaning of ...
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68 views

Heat generation rate to temperature

I have heatgeneration rate in W/m3 and I wanted to know how much temperature it can generate. The heatgeneration element is Platinum resistor for MEMS project. I want to know numerical relation? ...