Rusty_Shackleford
- Aug 18, 2021
- 11
- Joined
- Aug 18, 2021
- Messages
- 11
I’m trying to build a small circuit with a delay timer which turns a component on after a short delay. I made one using a 555 timer chip based on instructions seen in the video at this link: How to make 3 volt timer circuit, delay timer diy circuit - YouTube. When I hook up an LED to test the circuit, it works exactly as I expect, turning on around 2 seconds after I flip the power switch. However, when I replace the LED with a laser pointer, it no longer works; in fact, it seems to render the laser inoperable (even when connected directly to a power supply afterwards). I have included a schematic which shows the components I used, and how I wired them to the 555 IC. Can anyone tell me why this isn’t working, and also what I would need to do (or add) to make this work? Please keep in mind that I want the smallest footprint possible for this delay circuit; the enclosure I’m trying to fit this in is very tight, so any solutions which take up too much space may not be viable.