Hi,
I have been designing and prototyping a more reliable power supply for a project and have added in fuses to try isolate key areas to minimise the risk of overcurrent from any of the sub-circuits burning the entire thing out. I hope so anyway.
Is there any way I can use a Picaxe pin to determine whether one of my fuses have tripped? The fuses are rated to trip at 5A. I've seen some basic examples online and they have worked, but I am reluctant to connect to any sensitive IC's until I know they're safe.
Here's one example that i've got breadboarded (circuit 1):
https://dmohankumar.wordpress.com/2015/10/21/blown-fuse-indicators-simple-design-10/
Some of the supplies are going to draw between 3-4 amps at any time, so this is where I worry about just adding in a current limiting resistor and connecting to a Picaxe pin.
Here's a couple of screenshots of my early crude design (ignore the PIC32, using a Picaxe 28X2 to speed up development). Working on a design with an MCP23017 as I've run out of IO pins in this design.
I have been designing and prototyping a more reliable power supply for a project and have added in fuses to try isolate key areas to minimise the risk of overcurrent from any of the sub-circuits burning the entire thing out. I hope so anyway.
Is there any way I can use a Picaxe pin to determine whether one of my fuses have tripped? The fuses are rated to trip at 5A. I've seen some basic examples online and they have worked, but I am reluctant to connect to any sensitive IC's until I know they're safe.
Here's one example that i've got breadboarded (circuit 1):
https://dmohankumar.wordpress.com/2015/10/21/blown-fuse-indicators-simple-design-10/
Some of the supplies are going to draw between 3-4 amps at any time, so this is where I worry about just adding in a current limiting resistor and connecting to a Picaxe pin.
Here's a couple of screenshots of my early crude design (ignore the PIC32, using a Picaxe 28X2 to speed up development). Working on a design with an MCP23017 as I've run out of IO pins in this design.