Fountain Alarm Clock
![DIY Fountane alarm clock](/proxy/?url=https://content.instructables.com/FOZ/4J6B/JMAV41QS/FOZ4J6BJMAV41QS.jpg&filename=DIY Fountane alarm clock)
In this project i will demonstrate how to convert a common alarm clock into a timer.
Than we are going to use motor from old cd-rom to trigger simple fountain alarm.
Clock Circuit
![1.png](/proxy/?url=https://content.instructables.com/FNR/B0JI/JLQUXSHY/FNRB0JIJLQUXSHY.png&filename=1.png)
![2.png](/proxy/?url=https://content.instructables.com/F3J/5B4P/JLQUXSP2/F3J5B4PJLQUXSP2.png&filename=2.png)
Open the clock mechanism.You will notice there is a mechanical switch that connecting ground pin to a integrated circuit.
We need to cut that connection to ensure that we will not damage IC.
Than just solder a wire next to a switch.Other wire we need is a ground.That ground we need to connect on the ground on our circuit as well,and it's not recommended to mix wires. So the ground stay ground.we can also disconnect a ground from other side as well so we don't need to pay attention to this.
Since the switch is not insulated i don't recommend using more than 12v,and due the cheap construction i would rate it at 500ma. if you need to switch heavier loads than you need to install a relay.But for small loads like cd-rom motor is OK.
Assembly
![3.png](/proxy/?url=https://content.instructables.com/FFY/KVGQ/JLQUXSPI/FFYKVGQJLQUXSPI.png&filename=3.png)
![5.png](/proxy/?url=https://content.instructables.com/F3H/HAD4/JLQUXSPO/F3HHAD4JLQUXSPO.png&filename=5.png)
I glued a cap from small pill bottle on a gear wheel and wrap copper wire around.Bend copper wire so it can reach for the limit switch in desired position.Limit switch that i use is savaged from old printers and it is normally closed.
i used soldering iron to drill small whole and than place vinyl pipe thru the whole.
Dress Up
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