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...
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...
I've been making progress on the CAD modelling for the project. I've got a draft model of all of the hardware at this point. This weekend I'll start printing/testing components. I decided to go with a double herringbone gear for connecting the yaw...
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 WEEDINATOR is positioned at the start of a row of beetroot as the swede plants are now too big, with their leaves overlapping to form a canopy over the soil. Even though the objection recognition model used was trained on swede, it still partially...
I thought this would be worth publishing a log about. While preforming a load test I found that the flexspline will start to rachet if too much reverse torque is applied. I find this interesting, I was under the impression that the first mode of failure...
I'm planning to do some automated endurance testing of Tardygrade later in August. I want to find out if it can whitstand a few hundred hours of movement without breaking down. I'm actually more worried about the drive servo than the 3D printed mechanism,...
I've found plenty of well documented cabinet builds online, but from my own experience at arcade machines, most of them are not quite tall enough for me. I often end up bowing down and having the marquee too close to my forehead. So I decided to start...
Knocked this up last night from plasticard and spare bitsservo is a HK15138 3.8Kg-cm servo from hobbyking (£2.22)calculated exerting 5.4Kg at start of travel building to technically infinite at end of travel, either way, plenty of force to clamp...
We settled on our spectrum design. Our 3d printer isn't big enough to fit the whole 3d box so we had to print it in two pieces. We waited to print both pieces until we decided on our final build. When we tested our servo moving across we found that the...
The work before this session was quite important, especially due to the gears. We had to find the right size, the number of teeth, the size of the teeth and even the shape. The Fusion 360 file has had about ten versions.As you can see, the center...
Now that I am cranking out the treads at a much faster rate, I need to start looking into testing this design out. That means building a tracked robot. Because my goal is to test out the modularity of the system, I actually want to test out many different...
The last time I wrote I was getting ready to add additional pulleys to try to deal with the belt oscillations. Over the Thanksgiving break, I had some time to think about it some more and came up with some alternatives. One of the first things I did...
I spent a few days soldering parts together trying to rearrange the schematic in my head to make building easy.I made plenty of nonworking flip-flops, so I went back to basics.1) Install KiCad2) Enter the schematic of one flip flop3) do a PCB layout...
http://pubs.acs.org/doi/abs/10.1021/ic500919eThis paper entails the opposite of what I am attempting.I will start with a potassiated cathode so the full cell will be discharged upon assembly, this should increase total amp hours per gram as there will...