Timeline for Read in Arduino negative and positive voltages in a wider range
Current License: CC BY-SA 4.0
10 events
| when toggle format | what | by | license | comment | |
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| May 15, 2022 at 4:11 | comment | added | pipe | @Codebeat Few components does a better job at attenuating a signal than a voltage divider if you can deal with the impedance. | |
| May 15, 2022 at 3:00 | history | tweeted | twitter.com/StackElectronix/status/1525672316079943681 | ||
| May 15, 2022 at 1:42 | history | became hot network question | |||
| May 14, 2022 at 20:27 | history | edited | JRE | CC BY-SA 4.0 |
"Thanks a lot" is a sarcastic remark that means "your assistance actually made the problem worse."
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| May 14, 2022 at 18:18 | vote | accept | Libegria | ||
| May 14, 2022 at 18:03 | answer | added | Spehro 'speff' Pefhany | timeline score: 9 | |
| May 14, 2022 at 17:51 | comment | added | Codebeat | Voltage divider(s network), the center (2.5V) of value is 0. However it is never that precise because you squeeze a scale of -15V to +15V = 30V into a range of 0v to 5v. In fact useless. So you need an instrument /component to do this. | |
| May 14, 2022 at 17:47 | comment | added | DKNguyen | You need to bias your signal at 2.5V after stepping it down with a divider (and you may want a capacitive divider in parallel with it as well for frequency compensation so the resistor divider doesn't form an RC lowpass filter that slows down higher frequencies). Using a differential amp on the signal after is better too. That makes a differential probe as seen here here which you could actually just outright do if you wished. Just this one doesn't have a biased output: circuitcellar.com/research-design-hub/… | |
| S May 14, 2022 at 17:42 | review | First questions | |||
| May 14, 2022 at 18:20 | |||||
| S May 14, 2022 at 17:42 | history | asked | Libegria | CC BY-SA 4.0 |