kevinjliang / bme464 Goto Github PK

Voltage values are currently being outputted as decimals to make testing easier. We need to convert these values to binary to match the project specifications

Every second, the Arduino's output doesn't update for around 0.2 seconds. I suspect it might have to do with the fact that the LCD updates every second, which is a costly process that ties up the Arduino and prevents it from updating its output.

Output passing in 2 Hz AC

Output passing in 3 Hz AC

Haven't done extensive testing yet, but as of now, neither amplitude nor frequency are being read correctly. Might need to investigate what values exactly are being detected and plot them to look for a visual indicator of what's going on.

The output from the function generator zeroed for some reason when hooking it up to the rest of the circuit (summing amplifier, clipping circuit). Ended up fixing the problem by switching to a different probe. However, we never figured out why the original probe did not work.

Hooking up together the LCD shield and Arduino again for the first time again. Arduino started running the last code uploaded to it (Baby Incubator from BME 354, 2 semesters ago) successfully. However, proper Arduino drivers are missing on my laptop this time around, and Serial Ports aren't being recognized.

Planning on re-installing all Arduino software. Windows 8.1 update may be at fault

The voltage is not being clipped to the 0-5 V range. Currently clipping to -2 to 7 V, which won't be good for Arduino. Considering either using another Agilent power supply or generating the required voltages from the 5 V source using op amps.

Basic function to read an input, smooth it with a sliding window averager, and display the output to the screen was coded and uploaded to Arduino. However, instead of correctly reading the 2V DC input signal, an AC signal going for 0 to 5V appears to be detected instead.

Oscilloscope probe verifies that input is indeed 2 V DC, so not sure why the oscilloscope and Arduino are seeing two different things. Will revisit later.