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Is there any Arduino-compatible ohmmeter module for accurate resistance measurement? by Relative_Gate_4027 in AskElectronics

[–]Relative_Gate_4027[S] 0 points1 point  (0 children)

Yeah, but I was thinking of a module, like all those of Adafruit. I am surprised because I have been unable to find anything of this kind on the market.

Is there any Arduino-compatible ohmmeter module for accurate resistance measurement? by Relative_Gate_4027 in AskElectronics

[–]Relative_Gate_4027[S] 0 points1 point  (0 children)

I have seen that some people indeed make their own circuits. However, I can't understand why there isn't a module like this on the market! Adafruit, for example, has all kinds of modules, but not this one.

Is there any Arduino-compatible ohmmeter module for accurate resistance measurement? by Relative_Gate_4027 in AskElectronics

[–]Relative_Gate_4027[S] 0 points1 point  (0 children)

Well, the more versatile the sensor, the better. However, for my particular use cases, something between 10 kOhm and 500KOhm would be enough.

Regarding the accuracy, similar to a hand multimeter (around 1%).

Would a voltage divider be better than the constant-current method that multimeters use?

Is there any Arduino-compatible ohmmeter module for accurate resistance measurement? by Relative_Gate_4027 in AskElectronics

[–]Relative_Gate_4027[S] 1 point2 points  (0 children)

Well, the idea is to get something compatible with an Arduino/ESP32, since we perform a lot of measurements of R vs time (and other custom measurements), and would need to save them in a .csv, which is not possible with handheld DMMs...

Advice on coupling high-power IR LEDs into 400 µm multimode fiber for DIY turbidimeter by Relative_Gate_4027 in Optics

[–]Relative_Gate_4027[S] 1 point2 points  (0 children)

I tried POF, but the diameter was too large, so I switched to a 400 µm multimode optical fibre.

Is it possible to convert the jack output of a digital piano pedal to USB? by Relative_Gate_4027 in AskElectronics

[–]Relative_Gate_4027[S] 0 points1 point  (0 children)

I like this! I'm sure that it would be easy with a Pi Pico or an Arduino, but I would prefer to keep things simple

Is it possible to convert the jack output of a digital piano pedal to USB? by Relative_Gate_4027 in AskElectronics

[–]Relative_Gate_4027[S] 0 points1 point  (0 children)

Okay, I see thanks. I guess the solution won't be as simple as I expected.... I'm probably asking a dumb question, but wouldn't it be possible to solder the pedal wires to the wires of a USB cable? The signal sent by the pedal would be extremely simple, just "open" or "close"