Timeline for Bluetooth distorts analog read?
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
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| Jun 17, 2020 at 8:21 | history | edited | Community Bot |
Commonmark migration
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| Feb 2, 2016 at 6:45 | comment | added | Mikael Patel | Please add an analysis of the power budget. How much current can the 3.3V pin on the Uno supply? How much does the BT require (on peak)? Etc. You need to always do the numbers; hardware and software. | |
| Oct 5, 2015 at 14:37 | comment | added | Gerben | Try adding a small value cap between AREF and ground. Who knows. | |
| Oct 5, 2015 at 14:28 | comment | added | Luca | Yes, the common red line of the drawing is in reality the long "+" line of the breadboard, and two different wires go to BT and ADXL. Powering either of the two with the 3.3v out doesn't help either (originally my idea was of powering the BT with one of the out pins because that way I could control when powering on and off the BT, but for the sake of resolving this issue I momentarily switched to the common rail of power). The only "fix" is when I power the BT with an external battery (which, as you say, it means there are coupling issues)... | |
| Oct 5, 2015 at 14:23 | comment | added | Gerben | Try placing them further apart. Also use two separate wires to power the two modules (which you are probably already doing). If all that fails, try powering the ADXL from 3.3v. If this fixes thing, it means there is some coupling issue. | |
| Oct 5, 2015 at 7:47 | vote | accept | Luca | ||
| Oct 5, 2015 at 7:56 | |||||
| Oct 4, 2015 at 15:41 | answer | added | Majenko | timeline score: 1 | |
| Oct 4, 2015 at 14:45 | history | asked | Luca | CC BY-SA 3.0 |