| General > General Technical Chat |
| Anyone recognize the brand on this potentiometer? |
| (1/3) > >> |
| XOIIO:
Working on repurposing a volume control dial, and found an interesting (what I think is a ) dual potentiometer, however A103 is the only marking, aside from an embossed logo that I don't recognize. Figured I'd see if anyone here recognizes it. Had a look at a couple lists but couldn't find much. Hoping to find a datasheet with a pinout guide as it seems a little odd trying to meter it out. (that or I partially cooked it) |
| ataradov:
A103 is a 10kOhm logarithmic potentiometer (common in audio applications). I don't know manufacturer, but there are a lot of potentiometers in this type of package. I think they all have the same pinout, it should be easy to find and verify with the board. If I remember correctly it is some non-obvious pin assignment. Here is the pinout most of those 6 pin audio pots use: |
| XOIIO:
--- Quote from: ataradov on June 21, 2021, 04:24:38 am ---A103 is a 10kOhm logarithmic potentiometer (common in audio applications). I don't know manufacturer, but there are a lot of potentiometers in this type of package. I think they all have the same pinout, it should be easy to find and verify with the board. If I remember correctly it is some non-obvious pin assignment. --- End quote --- It did seem like that when I got it wired up and working with an arduino, it's also behaving a little oddly, maybe because of the pins I'm connected to, but analog reading it, it essentially goes to the max value of 1023, then starts to drop off again, which means it's a no go for use, I guess because it's not a strictly linear one. Guess I'll have to make and 3d print a mount for a panel mount unit as well as finding one that has the right shaped end to work. Sure there are volume knobs on amazon with more features but they aren't free, and they also are really chunky in comparison to this one. edit: Ah, so I did find the correct three pins to hook into then, good to know. |
| ataradov:
It is not linear (logarithmic), but it should be monotonic. |
| XOIIO:
--- Quote from: ataradov on June 21, 2021, 04:41:29 am ---It is not linear (logarithmic), but it should be monotonic. --- End quote --- it is, it goes marginally over 10k checking with a meter, but for some reason the arduino reading it acts oddly. I found another post with odd behavior, though not matching mine, and I guess you can map out the potentiometer positions, but finding/buying a linear one sounds like it would be less finnicky, as I'm still not sure why it's dropping down after the maximum value. I guess due to how the code is written to read it, but that still shouldn't go negative. Honestly I do like the idea of finer control at the top and bottom end, but not sure off hand how to fix this issue. |
| Navigation |
| Message Index |
| Next page |