I draftet a specification for a PScript interpreter some time ago and have implemented a minimalistic version. Basically I am down on very small footprints using only 1020 bytes SRAM to execute a decent size script. I actually think I will try implementing this on an Arduino Uno just for fun, it is that small.…
This board can be purchased from Sparkfun for 215.- USD and is basically a breakout board for ZED-F9P from ublox. ZED-F9P can be purchased for 148.- USD in quantum of 10 units, but I only wanted two of these boards for now for my robot project. What is important with this is the 10mm precision…
This example is a valid Plain Logic Diagram. Since the start and exit symbols are drawn on the same diagram this will count as a single diagram then it is re-used. It will be a block with 3 entry points and 3 possible events. Ignore the fact that Start3 and Exit3 is a separate diagram…
I have written about this issue before, but ST never fail to suprice me on their SW quality – crap that don’t work: Bugs, bugs and bugs! I updated STM32CubeIDE to version 1.6.0 yesterday and discovered that the IDE fail to load the images – I had to default to STM32-Link Utility to be able…
Having worked with computers in 40+ years I must admit that I sometime dig into nostalgia and look at vintage computers before I recall how little you got done and how much time things took. The world has moved on – and thanks for that. RP2040 or Raspberry Pi Pico if you like is a…
One of the key features on the boards are that they assemble to a larger control system by just clicking them together. I have around 12 different boards by now and will start adding new boards and variants as I convert all my electronics from Target 3001 to KiCAD. These two board have 5V, Device…
The wheels above are cool, specially since they can carry a lot of weight. But, the motors are 2 x 2.5KW and the belt driven design is very open making it easy to be contaminated. The powerfully motors are more designed for speed than for driving slowly, but I will optimize that later. Position system…
I just started on 2 new motor drivers for my new project and soldered DRV8301 which is a dense 58 pin crab using an old solder paste. Soldering these crabs are easy and done in minutes, but I struggled with this paste and ended up with a driver that had pins not connected causing 2…
I am currently using DRV8301 from TI and is very happy with that one, but I want to add a 3rd Current Sensor so I can detect sensor errors and my eyes fell on DRV8353 and DRV8323 series. DRV8323 is 60V, while DRV8353 is 100V. I don’t mind the increase in voltage. The numbering is…
I recently discovered this chip (ISO1042) and wanted to share a circuit I found. This circuit is excellent, but it has two flaws: Firstly you need a small isolation coil 10-20uH between ISO 1042 and VCC1. This act as a filter so that higher frequencies used by the buck converter in ISO1042 do not disturb…