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.
Files for Vibrating Distance Sensor:
The OpenSCAD files below are not necessary unless you want to change something
To Do:
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.
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
- OpenSCAD code. Download all files below
- Enclosure. Open this one
- Flashlight adapter
- Distance sensor footprint Support file for both files above
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.
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2015-06-16 (Tu)
2015-06-16 (Tu)
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