So, the results are different than expected, but that is just fine. I'm running my V200 at 2x the speed it came from TI. For those who are TL:DR with my logs, you need a 1.21 kOhm resistor and an 18 pF capacitor. I never ran the MD5 checksums as I didn't...
Microscope slides, 3-D printed parts and the finished test-tube-shaped micro reaction chamber. 2-component 5-minutes epoxy resin adhesive has been used to glue the microscope slides and nipples in place:Leakage test (pass):Populated PCB:Reaction chamber...
So I want to make some notes because if I don't there will be less notes on the 3d 3 servo experiment, and I had a lot of trouble with the code so I want to get as much trouble into my notes. I struggled with the angle of the hiprotate servo in particular,...
Prior art is of huge importance to the open-hardware movement. It prevents that certain markets become locked for 20 years by patent law. Let's generate some prior art with patents. I claim all the claims generated by rewriting all patents in the world...
The question The most asked question is always: "How far can you go with the battery?". And the answer is: "It depends!". The challenge The highest point that the Tour de France has ever passed is the Col de la Bonette at 2802 m (9192 ft). The distance...
15 July 2018 First a word about packaging. I designed the BQ25504 breakout board to be as small as possible because I had in mind the idea that it would become part of an integrated (hybrid) power source. That is, the LiPo battery, solar cell, and BQ25504...
Well, I should have expected the Fibonacci code to work since I already checked out all the previous functions of it. So I'm wondering what isn't going to be working to prevent the ROM code from working. I'm running the ROM v3 code because...
I have continued debugging the hardware mock-up. The fundamental target was to program a simple RPN calculator UI with 6 operations plus a number of scientific functions. The integration with BASIC will come later, after all the hardware components are...
There are two ways to get to the Z80 bus for external operations. RESET* - Clears PC and sets address/data bus to Hi-ZBUSREQ* - input - Address, Data, MREQ*, IORQ*, RD*, WR* to HiZBUSACK* - output indicates that BUSREQ* signal was performed (Hi-Z busses)...
[This post brings me up to date with the work I've done so far, and corresponds to the state in commit 0e4b928083ae69bb6ae577197ac016e93a77e80e] I've documented my design for the NEXT routines, which I've committed to Github here. It's a little sketchy,...
I promised this log for several times and now it is finally here. Let's start with how a rising edge looks.RisetimeThe orange and light blue ones were measured using commercial devices, the Agilent 86100C and LeCroy WaveRunner (this one was already mentioned...
I should apply a gamma curve to the analog axes read from Classic controller to make the response of the stick more subtle near the center and more steep close to the edges. Classic controller analog sticks provide position information with...
Version 1 of the hardware arrived, and I have been testing it. Almost immediately, I discovered I had made a connection mistake on the 3.3V regulator, and the system would not run normally from battery power. I desoldered that part, and by providing...
When you search google for FAT file format you get tons of pages on formatting disks. It's harder to pull out the detailed format of the SD card. Wikipedia to the rescue (Design of the FAT file system). A less technical FAT32 Wikipedia page is File...
MethodThe idea is simple, just build the SDK in normal Dual Core configuration, but pin all tasks to the first core. We then can run a task on the second core which should (in theory) run uninterrupted by everything.But: We can't be sure nothing is running...