Hi @TomGeorge,
Thanks a lot for your welcome message and for very useful tips, trick and notes!
Next time I will sketch schema on paper or by using Eagle, EasyEDA.
About connecting Arduino to IR DC-DC converter.
Simply I don't connect Arduino Raw pin to LiPo battery, but instead I connect from 5V DC-DC output to Vin pin?
If I connect to raw, in that case Arduino will use Linear regulator and there I have also some energy waste (for that reason I need >7.5V to get 5V operative). Since I already have DC-DC converter, I can use that output and connect directly to Arduino Vin.
What do you think, can I instead of using 3 DC-DC converters, use 2?
- DC-DC Converter (5V): Using for IR LEDs, Arduino Vin, Motor L9110S H-bridge
- DC-DC Converter (3.3V): Using for NRF24L01
About power supply:
Is it okay to use LiPo battery? Should I use 7.4V or 11.1V? Do I have to add some protection boards for LiPo?
Thanks!
Vedran