Ezb-v4 Power

mstephens_42

USA

Asked Jan 2016 — Edited Feb 2016

Resolved by Robot Doc!

For a Roomba application, will the EZB V4 handle the unregulated power input in the same way the EZB V3 could? I saw one discussion where the EZB V4 smoked after trying this.......

http://www.ez-robot.com/Tutorials/UserTutorials/115/1

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Robot Doc

USA

#1 Jan 2016

You must be aware of how much power is being provided to the EZ-B v4 and what you are connecting to the I/O pins. For example, the EZ-Robot Servos do not like power above 7.4 volts - which is why we recommend using Rechargeable AA batteries in the provided holder. If you are wishing to use an alternate power source, please be aware of this message and select a voltage rating that works with your application.

*Note: The only ports that have regulated power are for the Camera, i2c and UART #0 Expansion.

The SCI power pins only provide 500 milliamps at 17 volts. Most hardware attached to the EZB(4) like servos will require much more that half an amp, more like 5 or 6 amps. If the Roomba SCI power is used it will trip the Roomba SCI fuse and shutdown the EZB(4)