My Thunderstick PCB’s arrived some time ago, but it has been very hectic at work so I simply had no time to work on it. I also have a new 1kw motor that will be nice to test. The pictures above is the board with DRV8301 mounted. I have to start with this because…
This is the Ethernet board 3D from front. This 3D model is a bit ruff, but it serves its purpose and looking at this I realize that the RJ45 connector is to high. This is not critical as I can adjust hight by extending the pins to the next board (not shown) and use extended…
I am a bit stunned by the memory usage on ESP32. This is a 178 line test script that uses wired Ethernet and it only send an UDP message out – the program uses 645606 bytes – which is 49% of available space. Luckily it does not increase that much, so I assume this is…
Minor upgrade of the Wifi/Ethernet Hat as I remove the 5V Power connector from all Hat’s. It just occupy space and I really needed to add a shortcut protection if I was to keep it. 5V for MCU will now only be available from RPI backbone or USB only. I already have a separate PSU…
Rev 1.3 of my LoRa/GPS Hat. It will be a Rev 1.4 before I order this PCB because I want some changes. I want to remove (11) the UART port and (7) the separate Power port. The 5V power port will be removed on all Hat’s as I want to force 5V through USB or…
Adding the USB console with a buffer so I can perform printf before the console is open was very usefully as I instantly detect that it’s huge differences between starting the device from the IDE on debug mode or on its own. These things are a bit annoying, but they can be handled if your…
Kind of cool – using USB as console on XPortHub – notice all the init messages before the USB starts. Just a buffer tricks. The “Terminal” is a simple C# app that open a port, read/write. I will upgrade it to a proper CLI later. This is maybe the most important part of the infrastructure…
Just a minor upgrade of my NB-IoT Hat Cleaned up ground plane, remove one UART, added new SWD and resistors on SPI1. I have still not have time to assemble test the previous one, so will do that as soon as I get a SIM card. This Hat is cool because NB-IoT means you buy…
Plain (Programming Language for AI Networks) is very different from Languages like Python, Java and C#. The only similarity is that they all are based on a Virtual Machine and all use C/C++ as native host language. One difference is that C++ is more openly integrated into Plain than Java and C#, while Python have…
This is Revision 1.3 of the 7x Stepper Driver. Added resistors on SPI1. Changed to new SWD format. Added protection against wrong PSU polarity. Moved leds into board. Major improvement on ground planes. Previous change on 1.2 was that I turned the Connectors around. I re-routed the entire module from scratch and created ground planes…