An easy way to turn a device on and off would be by powering it thru a pin. But I tried this with the TEA5767 and it doesn't really work. Supposedly we get 40ma per pin and the power requirement on the data sheet says the power requirement is much less than that.
What happens is the blue led on the board just goes dim. Can I connect 2 or 3 pins in parallel and turn them all on at once, would that help?
No. Parallelling outputs is not a safe way to go.
What is a TEA5767? You better tell so I don't need to spend time on Google.
Suppose You can draw 20mA from a few outputs....
You are most likely short of pwr somewhere-
It's a device that allows you to make an Arduino an FM radio. I have mine so it comes on when I walk into the garage and stays on so long as the is motion on the PIR.
Attache a wiring diagram, especially showing the pwr distribution.
Right now it is attached to direct to the 5v pin and works fine so I have nothing to take a picture of. Previously I used pin 6 to power it, I know it's not standard procedure, but I wanted to be able to turn it off, the Arduino and max7219 and motion sensor stay on.
"it" is attached…. What the h--l is "it"? Make a power distribution diagram and show it. Don't use the Shakespeare type diagram.
What, and how, is powering the "Arduino" that obviously have a 5 volt pin?
If you are drawing 17mA from an output pin the voltage will be lower than 5V. How much lower? You will have to measure it. Blue LEDs have a forward voltage drop of about 3.5V, so if the pin voltage falls to <4V under load, the LED will be dimmer, paralleling pins MIGHT work, but ? ?
Why not just put it in standby mode.
I will look into the standby mode, thank you. As to where the picture that I posted went, I don't see it either. Sorry for that.
