MikeStevenson
New Member
There are some things I need to automate on a daily basis - first thing in the morning but only if there's adequate daylight.
I'm new to electronics - currently studying at Google University
I'm sure I can use an LDR to detect daylight and close the circuit. I plan to include a capacitor that will take a few seconds to discharge so the circuit can be opened almost immediately after it's closed.
Once the circuit cycles, it should stay open the rest of the day.
I've considered a timer that waits about 20 hours then resets and waits for the LDR to detect enough light again.
But it may be easier to use the LDR (or a second LDR) to detect a couple hours of darkness before resetting.
This should consume as little power as possible because it will be in a remote area and connected to a small solar panel and rechargable battery. It needs to run unattented for several weeks without draining the battery.
Any ideas?
I'm new to electronics - currently studying at Google University
I'm sure I can use an LDR to detect daylight and close the circuit. I plan to include a capacitor that will take a few seconds to discharge so the circuit can be opened almost immediately after it's closed.
Once the circuit cycles, it should stay open the rest of the day.
I've considered a timer that waits about 20 hours then resets and waits for the LDR to detect enough light again.
But it may be easier to use the LDR (or a second LDR) to detect a couple hours of darkness before resetting.
This should consume as little power as possible because it will be in a remote area and connected to a small solar panel and rechargable battery. It needs to run unattented for several weeks without draining the battery.
Any ideas?