Hi @SteveMann,
I appreciate your feedback and advices.
I am aware that Fritzing drawings are not acceptable and I'm planning to use Eagle or EasyEDA to draw diagrams or by hand (might be better for practicing and to learn signs and symbols).
I was thinking the same, to reduce step down modules to avoid unnecessary waste.
I'm planning to use LM2596 DC-DC Buck module:
- Input voltage :4V ~ 35V
- The output voltage : 1.23V ~ 30V
- Output Current :3A(Max)
- Conversion efficiency:92%(MAX)
- Output ripple: <30mV
I will try to power my: L9110S H-bridge module (2 motors will be connected), Arduino board and IR circuit with one LM2596 module.
About NRF24L01 module. All of them what I saw they require from 1.9V to 3.6V and there is a possibility to buy "Expansion board" which will do regulation from 5V to 3.3V and have already decoupling capacitor. I don't have that expansion board, so I guess that I have to use additional LM2596 step down module to power NRF24L01 with 3.3V. I was thinking to power it via Arduino 3.3V pin, but after some research I saw that it is better to power it "externally" to make NRF24L01 module more stable.
About IR diagram. If I replace 2N2222 with MOSFET, do I have to change something on that diagram?
Good point about my drawing skills. I have to improve it!
Beside my drawing skills, I'm aware of common grounding and that everything has to be connected to the same ground.
Thanks a lot!
I really appreciate your time and advices.
Vedran