01/28/2018 at 04:24 •
Finally after many many iterations and bad ideas, i present the best bad idea yet :)
And it works !
A modular pinball drop target.
As part of my DIY pinball project i needed to design some drop targets.
This is a complete/final model that works just fine.
I used a small piece of elastic band to put tension on the target, i tried using a spring but it was too much for the server. perhaps a softer spring could work.
Servo motor: Tower pro (13mm*24mm)
Micro switch with NC & NO contacts.
The model was designed in Fusion360 and is included for download. It has been a long work in progress and some mistakes were made along the way.
As for the reset mechanism, well this was just the best of the bad ideas i had and it seems to work fine in testing so long as the servo's had plenty of current yo work with.
It is modular with a common bolt hole in the base so you can connect as many as you like.
Fusion & STL files https://www.thingiverse.com/thing:2772610
12/16/2017 at 15:00 •
DIY Pinball - Flipper
This is the final version of my flipper design, uses an Allen key (hex wrench) as the shaft to make it easy to replicate using parts from your local hardware store.
I have made a space in the flipper for a zip/cable tie so no glue is required.
Fusion & STL files available here http://www.thingiverse.com/thing:2718971
I will probably make a base plate for the bearings and motor mounts just to sure everything up in the final pinball design.
11/12/2017 at 12:11 •
A pinball insert (table roll over switch) Using cheap SS49E hall effect sensors and neodymium magnets.
Video about it here: https://youtu.be/tZuv5gnS2lc
STL's & Fusion360 project can be found here: https://www.thingiverse.com/thing:2640670
All parts printed in PLA.
The clear lens in PLA transparent.
For testing i printed a large apron around the sensor so i could roll the ball across the sensor.
I the final design i would only print the lens to fit within the sensor case.
The single LED will probably be replaced with 3xAPA102 LED's...more info on the why later :)
It's not the easiest way to make a switch but it won't alter the balls trajectory and it's completely reliable.
I may or may not include this in the final design.
3x SS49E Hall effect sensor
6x Neodymium magnet N35 5mmx2mm
I connected the 3 hall effect sensors in parallel so that any increase in voltage from either of the 3 sensors would trigger a ball present. In the video i am using a arduino (Wemos D1) but in the final design it will be a simple resistor and transistor pair that will provide a signal much like any switch would.
10/22/2017 at 13:28 •
The drop targets have been printed and tested, they work great :)
Made in Fusion360
All files are available here https://www.thingiverse.com/thing:2598307
I'm yet to decide if i will use a solenoid or a motor/wheel to do the reset, will update the model when i do :)