(EDIT)
Question:
I found a PIC12F519 ic laying around here. Its from a 2 button remote which i found back in 2014. It was used for a gate and didn't work. However i managed to get it to work now and this PIC chip works perfect.
I want to know 1 thing before ripping this thing of the board, can i change the output polarity? I need negative V- output with the 20Hz pulse. So the programming should be easy but i need to know if i can change the output polarity by programming it. I can't find anything on the datasheet and so for the internet.
So i need v- as output, not v+.
Hello, i'm searching for a micro-controller, a very small one. Something like a SOT23-6 package or QFN, which i DO NOT have to program. What i need, is a microcontroller, that pulses ground with a duty cycle of 20% at 1Hz. I know its possible with an 555 timer, but it won't fit in an small flashlight housing so its kinda useless. I need something like SOT23-6 or QFN without external components if possible, (Running on "2V~4.20V")
Pulse has to be GND
(NO output resistance if possible)
And is there a Hall effect sensor that is (momentary)? So whenever i put a magnet against it, it will make GND continuous, but whenever i remove the magnet (regardless of what pole), it would cut the continuity of GND off.
Do i need a microcontroller for that? I really wan't it to work. And ground is what needs to be switched, not the V+ line.
All help is highly appreciated
Question:
I found a PIC12F519 ic laying around here. Its from a 2 button remote which i found back in 2014. It was used for a gate and didn't work. However i managed to get it to work now and this PIC chip works perfect.
I want to know 1 thing before ripping this thing of the board, can i change the output polarity? I need negative V- output with the 20Hz pulse. So the programming should be easy but i need to know if i can change the output polarity by programming it. I can't find anything on the datasheet and so for the internet.
So i need v- as output, not v+.
Hello, i'm searching for a micro-controller, a very small one. Something like a SOT23-6 package or QFN, which i DO NOT have to program. What i need, is a microcontroller, that pulses ground with a duty cycle of 20% at 1Hz. I know its possible with an 555 timer, but it won't fit in an small flashlight housing so its kinda useless. I need something like SOT23-6 or QFN without external components if possible, (Running on "2V~4.20V")
Pulse has to be GND
(NO output resistance if possible)
And is there a Hall effect sensor that is (momentary)? So whenever i put a magnet against it, it will make GND continuous, but whenever i remove the magnet (regardless of what pole), it would cut the continuity of GND off.
Do i need a microcontroller for that? I really wan't it to work. And ground is what needs to be switched, not the V+ line.
All help is highly appreciated
Last edited: