I am want to create a switch that will power my microcontroller as well as the 2 ESCs that control two brushless motors.
The ESCs run at 30A thought the motors only require 13A.
I am thinking to create the following circuit:
Use a switch to turn on the microcontroller (Arduino). Then use the Arduino, through one of its output pins, to turn on a relay that will connect the power supply to the ESCs. My idea is shown in the attached picture.
Can someone help me with the correct relay to use as well as other parts (transistors, diodes, resistors, etc) that might be needed? I will also like to see a complete schematic of the circuit if possible.
Thanks
Electrical – Relay to power ESC
arduinomotor controller
Related Solutions
You need to ensure 5V @ 700mA according to the manufacturer.
And, Yes, you can power Raspi from batteries.
From Raspberry PI Faqs
Can I run power Raspberry Pi from batteries as well as from a wall socket?
Yes. The device should run off 4 x AA rechargeable cells, but there may be stability issues as the batteries lose their charge. Using 4 x AA Alkaline cells will result in 6v and it is therefore recommended to use a voltage regulator.
You could use this example too, that power with 3V3 and use a batteries.
The relay module inputs are active low. They are designed to work that way.
Best Answer
Instead of using a transistor and a relay, you can use a single Power BJT to control the ESC from the Arduino.
BU931P BJT will suite your purpose.
DataSheet: http://www.st.com/content/ccc/resource/technical/document/datasheet/2d/82/a7/66/ea/d0/47/c4/CD00000005.pdf/files/CD00000005.pdf/jcr:content/translations/en.CD00000005.pdf