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...
Around the end of October, I finished up the design of all the plastic components which would house the electronics of a 200W x-ray system. It was now time to design those electronics!Back in September, I had an idea of how I should go about doing this....
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...
I'll skip to the happy ending. I can drive the display, the back light, and can read data from the touch screen, but achieving those milestones took much much longer than it should've. This update won't have much info on the actual e-reader project but...
Well exactly 98 man hours later, (avg. 14hrs per day*7,) and These are the 2 primary modules and I included the CLI (communication link interface) I had to make this so I could connect the CCD module with the ADC module.This is the CCD module (1) This...
1.5 nV/√HzDue to the low intensity of the acoustic signals and high noise floor of in-situ environments the PA is usually detected with lock in amplifiers. These can be had used on ebay for ~$200-400 dollars, I'm choosing to make one because:1)...
So I finally have the software sorted and I can "drive" the servos on the kitchen table by logging onto the Pi's network with my smartphone. A eureka moment of sorts! . I pause here to thank @Roger for responding with generosity and verbosity to my requests...
Good news, after an admittedly long wait, the new alpha2 boards (R3.3) are now available! These boards have a few layout improvements compared to the alpha1 boards, namely: Better signal routing allowing wider power traces on the rear side of the board....
woody is using BMX cranks because they allow very small sprockets. Below is one of two assemblies before welding. The bottom bracket was turned on the lathe, and the two plates were made by sendcutsend. And here it is bolted in place. The holes...
At the project's beginning, when I was writing the "Features" section in the project's description, last entry was "Tons of Pi Zero-related hacks that were discovered along the way, that I'll share with you as the project goes =)". I didn't actually...
I have the budget to finish out the robot. I have the base aluminum panel, the 6 axis arm and the linear actuator/slide mech for the raising and lowering of the arm at ~12" with a future capability of 18". The arm raise mechanism took a lot...
What Is It?The Intel SDK-85 is a single board computer trainer from Intel. It is very similar to the MOS (later Commodore) KIM-1 in that it features a keypad and 7 segment display. 2K of ROM and 256 bytes of RAM are provided...
There is a major limitation with circuit schematics: 3 circuits (with the same schematics) may have significant performance differences which are a result of the physical layout of the circuits. Therefore it can be said that how a circuit is implemented...