Gordons Projects posted about testing and setting the USB current limiter on the new Raspberry Pi B+.
One of the features of the new Raspberry Pi B+ is improved power handling – particularly round the USB interfaces. There is a device connected to the power to the USB ports that is quite clever – it controls the power and “soft starts” the peripherals plugged in. This helps to reduce any brown-outs on the main Pi supply, so reducing the chance of the Pi rebooting when you plug in a USB peripheral with the Pi turned on.
Additionally, it can also limit the total current drawn by the USB peripherals. This is 600mA by default, but can be increased to 1.2A via software.
Warning: DO NOT do this on a whim. Only do this if you are absolutely sure that you need to do it!
But if you do need it, then “How?” I hear you ask… Well, simple… There are 2 ways.
Each Friday is PiDay here at Adafruit! Be sure to check out our posts, tutorials and new Raspberry Pi related products. Adafruit has the largest and best selection of Raspberry Pi accessories and all the code & tutorials to get you up and running in no time!
Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground” – Adafruit’s Apps!
Maker Business — Bunnie working with Snowden on phone tracking and also taking on the DMCA Section 1201 with the EFF
Wearables — Gluing gloves
Electronics — Code like everyone’s watching
Biohacking — Five Sleeper Hacks
No comments yet.
Sorry, the comment form is closed at this time.