6th-Mar-21, 11:46 PM
Hello Chris,
If you have some basic very basic electronics skills and just want a simple "beep" then you could use one these sensors linked to a piezo-sounder. A 5volt power sourcewould be needed - a mobile phone charger might just about do it. If you want something like a car engine then there are "sound chips" that you can record your own sound for playback when triggered by the sensor. Sensor would go at the side of the track pointing across it and adjusting the range could cover both lanes or just the nearest one. I had difficulty that these sensors would not sense an all-black car but worked fine with other colours and combinations (ie all-black with a bit of white tape stuck on the side).
This kind of thing has worked for me previously for triggering lap recorders, but its up to you to decide if you have the appropriate skills.
Leo
Ebay link for sensors
Ebay link for piezo sounders
If you have some basic very basic electronics skills and just want a simple "beep" then you could use one these sensors linked to a piezo-sounder. A 5volt power sourcewould be needed - a mobile phone charger might just about do it. If you want something like a car engine then there are "sound chips" that you can record your own sound for playback when triggered by the sensor. Sensor would go at the side of the track pointing across it and adjusting the range could cover both lanes or just the nearest one. I had difficulty that these sensors would not sense an all-black car but worked fine with other colours and combinations (ie all-black with a bit of white tape stuck on the side).
This kind of thing has worked for me previously for triggering lap recorders, but its up to you to decide if you have the appropriate skills.
Leo
Ebay link for sensors
Ebay link for piezo sounders
Forum Precepts: Don't hijack or divert topics - create a new one. Don't feed the Troll. http://www.scuderiaturini.com
![[+]](https://slotracer.online/community/images/bootbb/collapse_collapsed.png)