When the Redboard Turbo is powered by a LiPo battery, the 5v pin does not output anything. Same when the power jack is used to power the board. The 5v pin only works when the board is usb-powered.
Is that intended?
If it is, how can I get a 5v supply in my project if I am powering it with a LiPo battery?
Alternatively, will the 3.3v pin work when battery powered?
Hi Undead8,
The 5V pin on the RedBoard Turbo is tied to VUSB and cannot be driven by a battery or the barrel jack. You can use the voltage from your battery or barrel jack power supply with either the 3.3V or Vin pins. Vin will be an unregulated voltage so if you are using a battery, you will most likely want to use the 3.3V pin.
If you need to get 5V from the RedBoard Turbo in a battery-powered circuit, you could either use a USB battery pack like [this one to use the 5V pin or integrate a step-up voltage converter to go from 3.3V to 5V. Unfortunately, we do not carry a Step-Up Breakout for 5V.
I hope this helps clear up any confusion regarding the 5V pin on the RedBoard Turbo.](Lithium Ion Battery Pack - 2.5Ah (USB) - PRT-14367 - SparkFun Electronics)
Thanks for the info. I redesigned my circuit to make it work on 3.3v.