2015-06-17 (W) Vibrating Distance Sensor

The intention of printing an insert for the flashlight was to have a single drop-in piece which would hold the ultrasonic distance sensor and a switch of some sort. Logically this piece would hook onto the lip of the flashlight's opening and affixed by the flashlight's bezel. This proved to be troublesome so a two piece unit was draft which sandwiched the ultrasonic distance sensor between them but it still didn't do an effective job of holding a switch.

Instead of coming from the opening of the flashlight a new idea was to insert a piece of PVC into the battery chamber. Schedule 40 1" PVC had approximately the same outside diameter as a D-cell. A simple tactile button was placed on a spare segment of PVC and the fit was tested. With no modifications, other than a 1/4" (6mm) hole, the flashlight's built-in switch was able to press the button. This size PVC doesn't have room on the inside diameter to store a battery so the shape will have to be modified to hold a battery. Simple slots the size of a 9V cut into the PVC would allow for the battery to be held securely. A sketch was made which looked like a toy lightsaber handle.

Tactile button on PVC in a flashlight handle

Tactile button positioned under flashlight switch

Rough sketch of internal PVC piece

Files for Vibrating Distance Sensor:
The OpenSCAD files below are not necessary unless you want to change something

To Do:
  • Get a working switch
  • Find a better way to mount batteries
  • Build parts to go in flashlight
  • Write instructions
    • Make a linkable parts list
    • Draft schematic 
    • Draw dimensioned flashlight adapter

The rest of the posts for this project have been arranged by date.

First time here?

Completed projects from year 1.
Completed projects from year 2

This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.

All information in this blog, or linked by this blog, are not to be taken as advice or solicitation. Anyone attempting to replicate, in whole or in part, is responsible for the outcome and procedure. Any loss of functionality, money, property or similar, is the responsibility of those involved in the replication.

All digital communication regarding the email address 24hourengineer@gmail.com becomes the intellectual property of Brian McEvoy. Any information contained within these messages may be distributed or retained at the discretion of Brian McEvoy. Any email sent to this address, or any email account owned by Brian McEvoy, cannot be used to claim property or assets.

Comments to the blog may be utilized or erased at the discretion of the owner. No one posting may claim claim property or assets based on their post.

This blog, including pictures and text, is copyright to Brian McEvoy.

2015-06-16 (Tu)