Category: Embedded Development

PLC – ADC Readings

One of my concerns on 600V design is how to make ADC readings in the 600V area. I need 3 x Current sensors, 1 x DC Voltage Sensor and 1(2) x Temperature sensors in addition to support for up to 3 resolver sensors as well as an external motor temperature sensor. That sums up to…

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STM32H503RB

This MCU started to interest me because it is a low price alternative with a lot of contents. ST’s price is 1.7 USD, but that is 3++ USD through Digikey in low volume. It is a 128Kb Flash version, but it has a promissing build-in Bootloader that I want to experiment with. If you build…

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BSA-Bugs, bugs, bugs

Testing and fixing bugs are part of a normal development cycle. I created a diagram of BSA itself for testing and as it re-loaded it looked good. I then moved BSASymbol and got a shock as several of the lines was linked to an invisible ghost symbol. The original lines was from the save, but…

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PLC Main Module

The “Main” or Central Computer if you like is basically a large MCU with 3 x CAN ports and 10 x Modul links. It only need a 5V PSU and can be used stand-alone or combined with other modules to form a larger entity. The central computer controls the entire system of both internal and…

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GX16 KiCAD 3D and Footprint

I will upload these packages on github (here) because it is 2 days wasted work having to draw them and I depend on others publishing their 3D packages myself. Just be aware that these are Beta – their accuracy is subject for testing.  I will draw the last five as I get them. Have fun.…

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GX16 Connectors

I fancied using GX16 connectors in a project since they are low cost, robust and can be made water proof. I found 2,3,4,5,6,7,8,9,10 and 12 pin versions with bend pins so they can be mounted directly on a PCB and fixed to a panel. But, what I did not find was 3D models for KiCAD,…

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Mobile PLC

I have lately had the priviledge of working with two vendors of mobile, electrical vehichles – one used a self-developed system designed for volume production series, the other was a larger industrial vehiche on prototy level where they started with a standard PLC and a small cabinet. Usage of a standard PLC “kind of works”,…

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