I'm currently working on a small hobby robot, where I want to use a FEZ Panda II along with a RX433 to remote control it. My power source is a Turnigy 3000mAh 3S 20C Lipo which gives me 11.1V to work with, which is too much for the FEZ, but perfect for the motors. I could easily use a resistor to get the right voltage for the FEZ, but I'd like a more generic solution, so I don't have to worry about varying current consumption from different sensors and what not. Using an LM317, I can regulate the voltage to my needs. My question is this:
When I turn on/control the motors, will this affect the input of the power regulator and in turn affect the output, and if it does, how do I stabilize it? I could test it, but I don't want to risk frying my FEZ just yet.
Also, I see people talking about an LDO regulator for the Arduino, is this more appropriate than a simple LM317 regulator?
- Motor Specs Voltage = 12 V No-Load Current = 3.5 mA Normal Load Current = 120 mA Stall Current = 360 mA - FEZ Panda II Specs Voltage = Through USB port or an external DC 6-9V power supply (connecting both is safe). Active Current = 103 mA. Idle Current = 65 mA. Hibernate Current = 3.75mA.