In order to calculate where the finger touched the surface, I needed a powerful enough microcontroller. It also had to support USB in order to be able to communicate to a computer. I am planning to emulate an HID mouse with the microcontroller. I had...
Well phooey. Now that I have better control over the hovercraft, I decided to give it its first test on Asphalt since that's what the Sparkfun AVC course is made of.Unfortunately, the current design is a no-go. While I can get the hover EDFs spinning...
The open source bluetooth stack BTstack (dual GPL + commercial license) has been compiled for Zynq the code does even fit into OCM, well we do not need it as we have plenty of flash space for code, but for development purposes its easier to load the...
CUI has released an extra tiny 3W power supply series. It's essentially 1 cubic inch. It'a also a little bit cheaper. The one big change is that CUI recommends an inrush limiting resistor on the AC side, which should help protect the fuses from wear....
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...
Sensor failures almost always show up as a hit on the battery discharge curve, but there are plenty of other things that show up on the graph for loggers that are still working: Another look at battery discharge curves...I will add more of these plots...
In anticipation of a shorter workshop time (due to the linear schedule change), we're going to pre-load all the breadboards with the parts needed for nearly all of the workshop exercises.A small area on the right will be left open for adding a display....
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...
So my enclosure arrived from China, was about the size I was expecting it to be. The arcade button just fits in the height of the enclosure which is why I choose it in the first place.That's the good thing about having a big enclosure is that you have...
I think the ODrive could provide plenty of power to make some really cool high dynamics.I was inspired by the Hangprinter discussions over on the RepRap forums.
One disadvantage of a 32 bit CPU is that your internal and external connections are 32 bits wide. That makes for a lot of wires. So time to start making plenty of cables for working with prototype boards and hooking everything up. Rather than buy them...
I added a rendered image of the final PCB. It is ready to send to dirtypcbs.com for manufacturing. I tweaked things a bit to remove three vias, and thicken some ground traces (most of them are attached to the GND flood fill, so there's plenty of copper...
I just finished SDRAM driver. It is a bit simple driver and is compatible only with IS42S16160B but it is working and now I have plenty of memory space waiting to be filled up with something interesting. :) Here is an link to pull request: https://github.com/VladisM/MARK_II/pull/24I...
We have our new motor controllers, gear box and leg working together for the first time. It still running on the power supply, so we can't push it too hard as it powered from a bench power supply. So far everything is looking good,...
The final goal of this project is to get a LIDAR like scan and show it on a GUI. So naturally it made sense to have an OS in the pipeline. Instead of dealing with USB connection to a PC, I opted for SPI between a rapsberry pi and a cyclone II FPGA. The...