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I installed Ubuntu 14.04 on Raspberry Pi Model B+ and everything worked fine. However I found out that the pins are not functioning. I tested it with a multimeter, and even the Vcc pins (5v, 3.3v) do not have the required voltage.

Is there a way to get it working?

---Edited--- I was trying to connect the Raspberry pi to an arduino via RS485 network. Raspberry Pi is the master and the arduino is the slave. I connected a Max485 ttl to RS485 module to the Raspberry and found out that it didn't work. Then only I checked the voltages just to make sure. Turns out even the Vcc pins don't work. I'm not sure whether this is because I'm running ubuntu 14.04 instead of raspbian

  • What voltage are you reading, if you are not getting "the required voltage"? – Darth Vader Jul 26 '16 at 15:49
  • It's actually closer to zero. ( 0.001v - 0.002v ) – Malith Jul 26 '16 at 15:51
  • What are you running your Pi off? And are you sure you have set the GPIO pins correctly – Darth Vader Jul 26 '16 at 15:57
  • I was trying to connect the Raspberry pi to an arduino via RS485 network. Raspberry Pi is the master and the arduino is the slave. I connected a Max485 ttl to RS485 module to the Raspberry and found out that it didn't work. Then only I checked the voltages just to make sure. Turns out even the Vcc pins don't work. I'm not sure whether this is because I'm running ubuntu instead of raspbian – Malith Jul 26 '16 at 16:02
  • Those pins should have voltage without a functioning operating system or even an SD card. They are hardwired to the corresponding supply rails, so if you aren't getting a reading from them something is very wrong. – goldilocks Jul 26 '16 at 16:13

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