RE: [beagleboard] PocketBeagle 5 volt and 3.3 volts output pins issue.

2020-05-25 Thread Graham Stott
Subject: Re: [beagleboard] PocketBeagle 5 volt and 3.3 volts output pins issue. What you are describing is typical behavior for electronics and is something you need to pay attention to. According to the OSD3358 vendor, if power is not applied to the chip, voltage should not be applied to any

Re: [beagleboard] PocketBeagle 5 volt and 3.3 volts output pins issue.

2020-05-25 Thread Jim F
What you are describing is typical behavior for electronics and is something you need to pay attention to. According to the OSD3358 vendor, if power is not applied to the chip, voltage should not be applied to any of its pins. You should either design a circuit to prevent this, or design your

[beagleboard] PocketBeagle 5 volt and 3.3 volts output pins issue.

2020-05-24 Thread Graham Stott
Configuration: PocketBeagle (PB) with an I2C connection to a MPU6050 breakout board. Power to the MPU6050 board is 3.3 volts from the PB. The PB is connected to a CurieNano using uart TX and RX. This is serial port 4. The two boards have their own power supplies. There is a common ground