Hi, I'm a beginner with Arduinos and trying to get the Groove electromagnet v1.1 to work, using an Arduino Mega but without a Shield. I am missing the very basics and have two questions:
The specification looks like this:
| Working Voltage: | DC 5V | | - | - | | Working Current: | 400mA | | Standby Current: | 200uA | | Load Weight: | 1KG |
I already connected the electromagnet to the Arduino directly: Black -> GND, Red -> 5V, Yellow -> D2. I used the sketch that was provided and it worked. But it is very weak, because the Arduino can't output such a high current, right? How would a shield be able to increase the strength of the magnet?
I have an external power supply with 5V 1A. Can I just hook it up to that or would I first need a 12.5Ω resistor to get down to 400mA?
Thanks already, Paniac