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Dear community I have noticed that the project that I'm working on has some stability issues when i power the esp32 board with a battery. I have noticed that the pitch bending operation tends to send inacurate messages when is not in use (actually when the position is at idle, i mean on the center) the midi messages are constantly sent, which is good because i don't want the device to sleep in battery saving mode. But the problem is, even using high accuracy value for pitchbendsender function, the values are big enough make a pitch fluctuation in real time, meaning that instead con central position cc63 it can go one or 2 cc values below, for example. That said, i noticed that when i power the board via usb with a good quality charger, the fluctuation does not happen, so it is a power issue. The battery is new, but probably not the highest quality, i wonder if is possible to solve this with code, if so, could anyone give me a hint? Or is there any other method to improve electrical signal? Thanks |
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Replies: 1 comment 5 replies
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You could try to increase the filtering in software, but fundamentally, this is a hardware issue, and should be addressed at the hardware level. I would recommend asking for advice on https://forum.arduino.cc/, be sure to provide a clear description of your problem and setup, including a detailed schematic (also add a link to this discussion). |
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Thank you so much, I set the value to 2.5 and it solved the issue! |
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2.5 is not a valid value, it has to be an integer. |
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I swear that i only changed the value. It was 2 first. I tried with 3 and f4 but after updating the code on the board, the cc values jumped from cc127 to a lower one, something like cc 70 or similar . I will revert the filter value to 2 and make additional tests and post the results. Thanks |
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Ultra weird. Maybe the board is damaged or something but now it works perfectly with a value of 2. As far as i know you haven't done tests with esp32-s2 or s3 series but they have been a little problematic when using Arduino ide or vscode, i am currently using vscode but previous versions did not let me upload code only via Arduino ide. The native usb implementation is messing around in my opinion i need to specify what mode i want to use, but for now, it wi.orks as intended. Thanks |
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Ok. I have noticed, that when i modify the pbpotentiometer <> and if i dont touch the filtering value (and i mean not modifying anything on this file) the constant reading goes back, but if i modified both files (even setting their values to the originals) the issue is solved. Maybe i am doing something wrong in the main cpp file, but for now, one more time the issue looks solved. Thanks again |
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You could try to increase the filtering in software, but fundamentally, this is a hardware issue, and should be addressed at the hardware level.
I would recommend asking for advice on https://forum.arduino.cc/, be sure to provide a clear description of your problem and setup, including a detailed schematic (also add a link to this discussion).