Timeline for I am trying to read input from 5th PIN of PORT B?
Current License: CC BY-SA 4.0
18 events
| when toggle format | what | by | license | comment | |
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| May 29, 2020 at 12:14 | vote | accept | user143252 | ||
| May 28, 2020 at 11:10 | history | edited | user143252 | CC BY-SA 4.0 |
added 22 characters in body; edited tags
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| May 27, 2020 at 21:28 | comment | added | Delta_G | The point is, "Don't try to read a pin that isn't connected to anything." | |
| May 27, 2020 at 21:27 | comment | added | Delta_G | The point is that if the pin is tied to a voltage it will read that voltage. If it is unconnected then what voltage is on the pin? If you answer zero then you need to go and study basic electronics some more. A pin should read LOW when it is connected to ground and HIGH when connected to 5V. If it is unconnected then you don't know what the voltage level at the pin is. It can pick up any stray noise and read anything. | |
| May 27, 2020 at 20:00 | answer | added | Edgar Bonet | timeline score: 2 | |
| May 27, 2020 at 18:05 | comment | added | Edgar Bonet | It's not 13th pin, it's pin “digital 13”. Not the same. | |
| May 27, 2020 at 17:41 | comment | added | user143252 | electronoobs.com/images/Arduino/tut_31/… PB5 IS 13TH PIN ON ARDUINO i think i am correct | |
| May 27, 2020 at 17:38 | comment | added | user143252 | @Delta_G then what is the point of low and high if pin is always (floating ) high | |
| May 27, 2020 at 17:38 | comment | added | user143252 | @EdgarBonet so what should i change in code | |
| May 27, 2020 at 17:32 | review | Close votes | |||
| May 27, 2020 at 20:04 | |||||
| May 27, 2020 at 16:43 | comment | added | Delta_G | If nothing is connected to the pin then it can read either high or low. Google “floating pin”. If you’re expecting it to read low when not connected to anything then you’re thinking wrong. | |
| May 27, 2020 at 15:42 | comment | added | Edgar Bonet | No, digital 13 is PB5, i.e. the 6th bit. The 1st bit is PB0, the 2nd bit is PB1, etc. | |
| May 27, 2020 at 15:23 | comment | added | user143252 | I have not used any pull up resistor and i am sure PINB 5th bit is 13 pin of aurdino | |
| May 27, 2020 at 15:08 | comment | added | jsotola | your code is operating on the 6th bit ... bits are numbered 0 to 7, so 5th bit is bit 4 | |
| May 27, 2020 at 14:31 | comment | added | chrisl | Do you use an external pullup or pulldown resistor? | |
| May 27, 2020 at 14:05 | history | edited | user143252 | CC BY-SA 4.0 |
edited title
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| May 27, 2020 at 13:21 | review | First posts | |||
| May 27, 2020 at 17:14 | |||||
| May 27, 2020 at 13:20 | history | asked | user143252 | CC BY-SA 4.0 |
