New to the forum, new to the field, I have thick skin don’t worry about filters.
I have acquired the parts I believe I need to put together a basic obstacle avoiding car. My biggest concern right now is powering and wiring the thing correctly. I want to focus on wiring together the L298N, the motors and the Arduino correctly to a power source. I’ve read a lot, probed other groups but I am still unclear on what be the right approach, although I feel this is probably a very basic question.
List of parts in play:
- Chassis and tyres from a kit
- 4 x DC motors (site says “90mA without load, 3~6v”)
- 2 x L298N H-Bridges
- 9V battery with a barrel jack adapter
- A bank of 4x 1.5V AA batteries
- Servo and ultrasonic (out of scope for now)
I can also get another battery if it’s necessary.
Most pressing questions for me:
- How do I power this? Can I get away with one power source?
- What’s better - the Arduino providing its 5V to the bridges, the Arduino being powered from the 5V of a bridge, or Arduino (on Vin) and bridges (on 12v?) being powered from a 9V in a power board?
- Or should I use separate power sources for the Arduino and for the bridges? i.e. the 9V for the bridges, the 4x1.5V for the Arduino through VIN?
- Do I power the bridges on 12V or 5V?
I am not lazy and I’m not looking for someone else to do my job, but I am really confused right now. I’ve come up with some sketches.
Thanks in advance.