Upgrade to an old Cantenna Dummy Load

A few years go I made a Cantenna Dummy load. I filled it with mineral oil left over from some woodworking projects and it;s worked great for a long time. Takes a 200W or more just to get it warm…

I decided to 3D print a mount for a wattmeter on top… Had to make a base while I was at it…

 

And I made an RF power meter tap too….

Now to decide if I go Analog or TFT Display digital…. Or maybe a combo…. I do have some nice meters I got recently at a surplus store….

Nerf Chronograph

I saw this on instructables and had to try it… Luckily there are plenty of Nerf guns in this house….

I had a sensor amplifier board on the bench from a motorcycle Dyno project so I figured I could just use it with an IR Led/Detector too.

It was designed for these VR  automotive speed sensors…

 

Theres even a smaller standalone amp instead of the shield. Ultimately I’d like to build it into a barrel extension…

pick one of these…

add a 3D printed muzzle break….

and it works great….

and even the serial logging. Time to make that bluetooth to a custom Android app….

 

A Display Panel for my CO2 Laser

I made a nice water pump system and it seemed  wrong to use panel lights  with it. So I went VFD…

 

Fairly Simple design but I did add screw mounts for the display itself and a form fitting pocket…

I even added an RGB  led indicator

Not a bad fit..

The hard part was cutting the panel. I was going to use the plasma cutter but I opted for an angle grinder with a cutoff wheel. I figured there would be less warping of the thin plate.

Luckily the whole control panel drops out….

 

Guess I need more water….