1. February 2014 by Peter
Okay, so this is my take on how you can make your own gauges. The cost is under under $10.
If a picture says more than a thousand words then I guess a video says more than a thousand pictures, or?
I few things I would like to point out as you watch the video:
Servos only turn 180 degrees. So in order to make it turn more (normally you need 270 degrees on a gauge) you need gears with a ratio.
The gears I use are pretty thin (Only a few mm’s high). So I need to make sure they stay in place. Therefore I use a 5mm spacer to minimize the space the room for gears to move in. Together with the extra “spacer” (The white “hill” in the video) the gears should be in place.
I use a 20mm spacer to get some distance from the gauge to the servo engine. This should add to stability. Furthermore the more layers the more stable. Therefore I have two layers of plexiglas at the end. Also make sure you place the gears in a way, so the shaft not can move forward/backwards. If you have this problem you might want to an extra gear/disc on the shaft (Next to the plexiglas) with the only function to hold the shaft in place. The additional gear then only work as a disc and not a gear. In worst case glue a disc/gear on each side of the plexiglas.
I installed this gauge on Foamalux. But in fact it would have been better to stick it on plexiglas so you can backlight it.
For this gauge I have used the following:
- My own overhead print.
- 3mm screws and nuts
- 2 x 20 mm & 5mm spacers (At dx.com)
- 10cm 2 mm shaft
- Foamex / Plexiglas
- S3003 servo engine