PKE Meter build project!

It all began with me testing out how to use a servo on an Arduino without using the delay function… Boy did I do it. My brain set to work on how I could apply this to potential builds. So naturally I thought of the PKE meter which I have always wanted to build. Here’s the outcome of that brainstorm

I have officially begun another build project. This time I am building the PKE meter. It’s a little bit tough because there are no consistent dimensions I have found for it so I drew it by hand first to get a rough guestimate.

Of course, these measurements are probably not extremely accurate but it gave me a starting point.

I then overlayed that onto this image:

Where I then stretched the drawn image to match the one I pulled up. I did this just to make sure my proportions were right. I then added the image into Solidworks and began modeling. https://www.youtube.com/watch?v=IJTd7gmPbwo Super rough model. But after a few more hours it took shape and now looks like this:

I created the assembly in solidworks just to make sure it’s feasible to 3D print let alone assemble it. Hopefully it’s all good but here’s a video of the gear set I have for the arms to move via a servo

That’s all I have for now, but keep me accountable for keeping you guys updated! Let me know what you think so far and if you have any questions I’ll definitely try to answer them

Note that the gear seemingly floating without constraint is screwed onto a servo but for demonstration purposes it was made invisible.

I’m going to start 3D printing today

1 Like

The image links are broken. Are they set to “Private” or equivalent on the host site?

Thanks for letting me know! Should be fixed now.

Looks great, buddy! I’m excited to see where this goes.

UPDATE TIME

I can pretty much only work on this project during the weekend for the time being because of school, but I’ve printed out the arm pieces and make sure the gears work nice and smoothly and they do!

Are you willing to share the print files and the arduino hardware and code when you’re done?

Certainly. Once I know how everything fits together and all that stuff that is; I don’t want to give out half-assed files.

this is looking legit, buddy!!

So today I added the access ports for the electronics on the model. I added the potentiometer knob slot for controlling the lights,

Next I added a port at the back for the SPDT slide switch for the main power.

Finally I ordered stuff I needed to give life to this thing.

Here’s how the electronics are looking

This is looking really good buddy!!

I this a custom concept? Those wings are a bit too long.

Yes, it’s completely custom. I can change the length of the wings if I want to but I have them printed out already. In the next iteration I’ll shorten them a tad. Thanks for the observation! Hadn’t crossed my mind that they were a bit longer than the original

What is your overall thickness at the middle? How much room did you need to fit the arduino in there?

Hi! I’m not entirely certain what you mean by thickness, but I made a drawing that shows the simplified internal dimensions.

I hope this is helpful! To actually fit the Arduino into the body I had to remove the power socket soldered on-board. Otherwise it stick out too far. It’s not really crucial to the functionality of the arduino anyway since there are other pins to power it. However I probably plan to solder on a power socket anyway but instead of hardware on-board it will be attached via loose wire.

This is great, thanks!

Buddy, you know I am going to be down for 1!!

I just got the batteries and power adapters in the mail today and I took measurements of them so I could add the proper infrastructure onto the body. I added a space for the battery and a hole for the charging cable.

semi-exploded view

Cross section

The ports

The Battery

Although, I did find out that the batteries I bought are only 3.7 volts which is insufficient to power an arduino. So I ordered some step-up converters which will do the job nicely. I have ample room inside of the body itself to have other circuits if need be.

Printed half of the handle, everything fits well!

This is really looking great! I look forward to your updates!