Few hours fiddling with code this afternoon.Have dropped brightness to 1/32 of full power! Doesn't leave a lot of room for going dimmer.Deciding how to actually display the time is quite tricky in itself. I have an inner ring with 12 leds and outer with...
The boards arrived on Saturday. I finally had time to sit down Monday night and begin populating one. Full disclosure, this was my first time doing and fine pitch or SMT work. I began by doing a full electrical test on one of the boards, which it passed....
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...
As the first step of this project, kinematic model of the robot manipulator is derived. Then using the inverse kinematic equations, a given trajectory (shown by the red line) is followed while the camera (represented by the blue arrow) tracks the object....
This is just a brief discussion of some of the choices that were made in the design of this project.First and foremost, everything was designed to be fabricated and assembled by me, "in house" so to speak. That meant that any chips had to be hand-solderable,...
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...
This project emerged five years ago while trying to reverse engineer a forward looking sonar unit fitted to my work boat. The circuit board was dead simple and looked like a home etch job even though it was manufactured by a major military contractor...
So, in order to use any sort of fabric thing indoors at a trade show, it has to be flame retardant. You can buy fabric that has been treated as such, but it is awfully expensive. So I bought super cheap fabric and treated it myself. I'm not sure if the...
So I asked about this in the PJRC forums, and evidently Paul has made a board available from OSHPark here:https://www.oshpark.com/shared_projects/d3J03ZebTheir bootloader chips are available here:https://www.pjrc.com/store/ic_mkl02.htmlIt's still missing...
I was let down a lot by how the "Community" received this board. I thought it would spark a lot of interest, as it could be the starting point for a lot of new things. The first obvious goal was making replacement boards for A500+ machines but this was...
I finally got BLE keyboard functionality working. Although there is an example provided with ESP-IDF, getting the HTTP server (for the camera stream), WiFi, and Bluetooth stacks running at the same time is a bit finicky.The main issue that arose...
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...