This log includes major upgrades included in the current system.Till now we had been using an older OS incompatible with RPi 3 since the display could have only worked with that image. Additionally it caused the trouble where the onboard or external...
Hey all!This is another project log to update the latest developments of OWL (Just in case you forgot, we call it OWL because, well, Open Indirect Ophthalmoscope, OIO).So, since the last time I made a log, we’ve been working on--making an elegant GUI...
Earlier version of the device was reconsidered in terms of following aspects:• Accommodating for different refractive errors • Aesthetics • Ergonomics • Weight distribution OIO ASSEMBLY EXPLODED ASSEMBLY1. ACCOMMODATING FOR DIFFERENT REFRACTIVE ERRORS...
7/29/2013: As I stated; been working on the cabinet for the Mirror universe project. I bought a couple of "project" Bally Star Treks from a fellow pinball collector out of Shertz a few years ago. These have been setting in storage for a while... and...
Then came board pliers MK 3, featuring bigger grip teeth, a handle ratchet, more aggressive slider ratchet, more curves to aid cleaning, a handle extension to clamp onto a stand, 5mm thick pieces. The ironing process yielded a marble like finish on...
Designing parts to fit perfectly together is hard. Whether it's the coarseness of our fabrication tools or that of the vendor selling us these parts, nothing is perfect. Engineering has cute word for it: tolerances. Maybe it's me: "I can drill that hole...
In order to stick to my design goal of an AUD$1000 budget I decided to start a bill of materials spreadsheet. This would be a handy tool to keep track of budget and also allow me to show people if they wanted to try making something similar. Below is...
The goal for day 1 was to make a mechanism with LEGO studded beams and gears to convert speed from one axle (where the pinwheel will be) to strength at another axle (where the bubble wands will rotate). The mechanism completed on day one is a 1:36 ratio;...
- i had print some different eyes ball which is fit the head.- the eyes ball it can clip it and more easy to take out.- also the mouth and teeth print one by one to stick it.
This is based on the design of a strain wave gear, but it not an exact copy of a strain wave gear. Strain wave gears characteristically have an oval wave generator, a flex spline cup, and a circular spline. The wave generator engages 1/3 or more of the...
I'm beginning to deduce some of the magic required here to make the gears mesh. I stumbled upon a compatible gear set by accident originally, but now I think I understand what is actually going on. The rules: The sun gear tooth count must be divisible...
Got X-RAYS, yeah :-DIt works fine. I get a smooth nice green glow on the scintillator screens.It works with car engine ignition coils and an old radio tube (there are plenty of them on ebay, from 50 cents to 3€)
After designing our main control box through the website "boxes.py," we assembled it through the laser-cutter computer, positioning each cut-out to make the most efficient cuts. We made sure to allow a bit of room between each piece, just in case the...
Alright, a tiny bit more research...This is a good resource:http://www.allaboutcircuits.com/textbook/alternating-current/chpt-13/stepper-motors/Here's a "Hybrid Stepper Motor" (simplified), (from that page):(simplified, further:)"Hybrid stepper motors"...
I just wanted to say that I've tried cutting the HTD 5MM mount ring in my new CNC in 9mm plywood and it seems that when I place it over my first design revision there's a 1-2mm gap/play between the belt and gear. This isn't supposed to reflect at all...