Timeline for Multiplexing a piano keyboard with arduino nano
Current License: CC BY-SA 4.0
12 events
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| Sep 17, 2021 at 11:01 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Nov 29, 2020 at 20:49 | comment | added | jsotola |
stop calculating note ... note = offset + 20 + (12-j) ... use increment instead ... note++
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| Nov 29, 2020 at 19:03 | comment | added | jsotola |
your for loops are messed up ......the order of keys in the columns is not all the same (if your schematic is correct) ... first column is 5 to 8 ... second column is 12 to 5 ... third column is 5 to 12 ... fourth column is 5 to 12 ... fifth column is 12 to 5 ... sixth column is a single key that does not require a for loop
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| Nov 29, 2020 at 18:21 | answer | added | Edgar Bonet | timeline score: 1 | |
| Nov 29, 2020 at 16:40 | history | edited | multikeys | CC BY-SA 4.0 |
added 1 character in body
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| Nov 29, 2020 at 16:34 | comment | added | multikeys | Thanks, that must have happened while pasting here! | |
| Nov 29, 2020 at 16:24 | comment | added | Edgar Bonet | You have unbalanced parentheses on line 82. | |
| Nov 29, 2020 at 15:47 | history | edited | multikeys | CC BY-SA 4.0 |
added 4443 characters in body
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| Nov 29, 2020 at 15:14 | answer | added | st2000 | timeline score: 0 | |
| Nov 29, 2020 at 13:35 | comment | added | Edgar Bonet |
The Arduino outputs are about 25 Ω, whereas the internal pull-up is roughly 30 kΩ, so a single OUTPUT LOW can pull low many INPUT_PULLUP pins. Could you show the schematic of your keyboard + Arduino setup?
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| Nov 29, 2020 at 12:30 | review | First posts | |||
| Nov 29, 2020 at 15:10 | |||||
| Nov 29, 2020 at 12:24 | history | asked | multikeys | CC BY-SA 4.0 |