IronJungle
Senior Member
I did a search and was surprised no to find some clues on this. Feel free to link page me with a thread URL if this has been covered.
I'm considering the use of a three color (RGB) LED to indicate the battery voltage on my motorcycle. You know, RED for under a certain voltage; GREEN means all good, etc.
Anyone that is familiar with PICAXE knows that the project code is very straight forward.
As I see it, the voltage into the PICAXE needs to be 'level', consistent, not changing, stable at, say 5VDC. If the voltage into the PICAXE is not stable then the ADC reading of the motorcycle battery voltage will not be accurate.
What is suggested to bring 12VDC to 5VDC? To me, I think the 'traditional' 7805 would not be a stable enough reference.
Any suggestions on the voltage divider to knock the motorcycle battery voltage (~10 to 15V range) to a 0-5VDC level the PICAXE can handle?
Thanks,
I'm considering the use of a three color (RGB) LED to indicate the battery voltage on my motorcycle. You know, RED for under a certain voltage; GREEN means all good, etc.
Anyone that is familiar with PICAXE knows that the project code is very straight forward.
As I see it, the voltage into the PICAXE needs to be 'level', consistent, not changing, stable at, say 5VDC. If the voltage into the PICAXE is not stable then the ADC reading of the motorcycle battery voltage will not be accurate.
What is suggested to bring 12VDC to 5VDC? To me, I think the 'traditional' 7805 would not be a stable enough reference.
Any suggestions on the voltage divider to knock the motorcycle battery voltage (~10 to 15V range) to a 0-5VDC level the PICAXE can handle?
Thanks,