This is a PowerPoint mock-up. I just soldered om the PLCDCMotor board and im considering to keep the board as is with a less changes than I planned – the TTL connector at left can be used as is with a short 1:1 cable to a small board that convert the board to a stand-alone…
STM32H503CB is fastly turning into my favorite MCU for three reasons – it is fast, it is low cost and it has en extremely good IO routing system. It’s only drawback is 128Kb Flash and 32Kb SRAM, but it exist other MCU’s in the same series with more (that also cost more). That said it…
Using my M12 DCMotor driver as base I want to upgrade this board as described below – running motors are fun and this board is capable 10A (actually 2 x 10A) at 24V, so it is quite powerfully. This board is very capable as each driver privide two separate half H-Bridge circuits with current sensors…
This is a 4 x PWM or 2 x DC or 1 x Stepper motor driver. I have these boards already so I will solder one up for test later, but I will also design a new board with a few differences. MCU used here is a STM32G491Cx – these are good, but expensive so…
This ECU box is sold on Aliexpress for ca 30.- USD and include the connector. On my M12 design I was stuck with expensive M12 connectors, so this offers a cheaper way to get a waterproof, shielded box. The motherboard and daughteboards below are designed so it contains PSU, Ethernet, 2 x CAN, main…
I received this board earlier and it was straight up with a few notes (See below picture). #1 MCU worked fine. I had issues with too old soldier paste, but got some new paste and it was ok. I did try stensils this time – it kind-of worked, but my main problem is that I…
The following diagram is an example of a Class and an associated Diagram – see text below picture: In BSA a Class and a Diagram can be the same as they can precent different aspects of the same object. A Class itself is only an overview of an object, but a Class Diagram adds inheritance…
I needed to consolidate PLD a bit around calls to sub-diagrams and functions, so I added a new diagram symbol and a new function call symbol. These overlap a bit, but the diagram symbol show a different diagram being used as a sub-diagram. If you double-click on that you will navigate tothat diagram. The signals…
I have been very slow on ordering PCB modules for my latest PLC, the reason is because I have so many designs laying around lacking firmware as they only reached the proof of concept level. But, I am finally pushing these modules. It is five modules that will be created now because I need those…
The diagram below illustrates some challenges we have in BSA – how does things glue together ? The small diagram have a single class “Customer”, a small state diagram and a Data Table – all providing different part of an application. Class as an example is a declaration of a “datatype” with attributes, methods and…