Just showing a test diagram on the UML State Engine Designer I am making. It is stoll lots of work and details left, but progress is actually going fast the days I work on it. As for now this is just an experiment. A state engine can visualize some top level flow, but the details…
One of the big advantages with STM32 is that they have a range of MCU’s from the small M0 series to the more powerfully M7 series. Changing MCU to scale up/down is very easy. The MCU’s will have some differences in pin usage and register usage, but ST have been decently good at keeping their…
This has been on my list of things to do for a while and represent a few challenges. Chips like AD9851 contains a full DDS that interface to a MCU on one side and give 3.3V signals on the other side. I have yet to decide wherever to use AD9851 or something else, butAD9851 is…
I must admit that the realism in KiCAD’s 3D model is growing on me, it is great for precentations in here. Adding a 3D package was about selecting an associated 3D model file, so from now on I saved a copy of this footprint with the associated model in my own extension library. Adding drill…
2nd Draft of my new 32xServo/IO Hat rev 1.4. Added the leds and missing SPI resistors + reorganized connectors at bottom. I notice that I need to add a capacitor to assist D2 (TVS) on the bottom + I want to add 2 jumpers allowing left and/or right array to be connected to 5V as…
First draft of 32xServo/IO Hat. Designed withh KiCAD this time, but still a 2 Layer design. I lack 3D packages for Power connector, USB port, JST CAN port and Q1 Crystal. The Q1 Crystal footprint was my first footprint design, but is was rather straight forward. Next I will have to try adding a 3D…
One of many new features that was not available in Target 3001 is display of signal names on tracks and pads. I selected the wrong footprint for SWD, but as it is the same size as a 1.27 pitch header I did not think it matter before I noticed that it count the pin differently…
It is soon 1.jan.2020 and Norwegian import rules changes, meaning I basically get MVA and a 20.-USD handling fee on every package unless I get the foreign company to declare MVA. It will be a pain and take some time before this happens. Ordering parts from Asia will be close to impossible unless you order…
This is a screen-shot of my two screens. I have PCB router on left and schematics on right. As I work on PCB the schematics will show the associated part – neat little detail. KiCAD is actually multiple applications so its perfect to take full advantage of multiple screens as you work. I have routed…
This shows and early draft of rev 1.4 on KiCAD using their normal 3D model. KiCAD have a more realistic version that is a bit slower to draw, but for all poractical purposes it does the job. Accurate details is IMO not important here, the objective is to verify as much of the mechanics as…