mhfleming
USA
Asked
— Edited
Hello all,
I am working on a BB-8 and I want to use the Ez-B as the brains. I have wired up an arduino to take care of talking to the various LEDs in the head. But right now I have a separate power supply for the arduino and a different one for the Ez-B. How have other people done this? Is it possible to use just one power source?
Thanks for the help!
Matt
1. EZB Voltage input
2. Arduino model
3. How many Leds and what type
4. Are the leds connected to the Arduino Pins or via a transistor ?
As for the voltage input to the EZB, I was going to use the battery pack that came with the developers kit. But I could switch to a Lipo battery instead if that would work better.
1) developer kit battery pack with 6 x Rechargeable AA (NiMh)
6 x 1.2 = 7.2v 1900 mAh
2) developer kit battery pack with 6 x Non Rechargeable AA (Alkaline)
6 x 1.5 = 9v 2500 mAh
3) Lipo Battery
https://www.ez-robot.com/Shop/AccessoriesDetails.aspx?prevCat=103&productNumber=41
7.4v 1300 mAh
Based on the public specs:
1) EZB (4.5-16v)
https://www.ez-robot.com/Tutorials/Files/EZ-Bv4%20Datasheet.pdf
2) Nano via VIN pin (7-12v)
https://www.arduino.cc/en/Main/ArduinoBoardNano
3) Adafruit circuit V+ Pin (5-30v)
https://www.adafruit.com/product/1429
you can share one of the above power sources between all the 3 circuits.
Note:
i strongly recommend a 7.4v Lipo Battery if you have plans to add the ezb servos to your project.
Thank you again for the help!
Matt