Looking at Feeders I looked into PandaPlacer’s BambooFeeder, microsmt’s Bing Feeder as well as the T-2 Feeder. I am not able to use any of these “as is” because they are not truly open source – but BambooFeeder is very low cost < 5.- USD and I had their 3D images so I could print…
Just a picture showing what I am working on. I also think this is the first picture with Ethernet mounted. Both these boards will soon come in new versions. I need to experiment a bit with picture resolution since my screens now are 4K – I used to reduce pic resolution by copying pictures through…
The block diagram below reprecent a single ECU Node – which in reality is a baby with many names. It is also called a VCU (Vehicle Control Unit) or Mini PLC if you like, I prefer the terminology “ECU” – Electronic Control Unit since it is assembled in a waterproof, small box and general purpose.…
Work in Progress – managed to finish schematics and place components – a bit more than I expected, but extended board on right side with 2cm so it goes wall-to wall in the box and SD-Card comes out as awell. Using KSZ8863RLL to achieve dual Ethernet on this. The MCU will see this as a…
RTOS with a Dictionary is standard in any system I build. Most people will think FreeRTOS or a similar thread shifter then we say “RTOS” on embedded, but the hard reality is that most embedded systems are “barebone” and run some version of a round robin scheduler. Myself I do the same – I install…
I am using KSZ8863RLL to achieve dual Ethernet, This is a 3 port switch and it basically just replace the LAN8742. The MCU will just see an ordinary Ethernet not realizing that it is a switch. My initial idea was to re-use the ECU main board with minimal changes, but I underestimated the amout of…
As mentioned in my previous entry I started with 100Mbit, considered 1000Mbit and reversed to 100Mbit. The reasons to stick to a more conservative 100Mbit are many: Cost for 100Mbit is ca 1/4th of cost for 1000Mbit. Very few PLC type systems support 1000Mbit on daisy chain designs. And the hard fact is that a…
This is an early draft of the Dual 10/100/1000 Mbits Ethernet Main. I decided to use a 1Gbit switch and the reference schematic don’t have many passive components so this should be ok. From a SW perspective we still have the same board as ECUMain. I will look into providing an alternative for the M12-5…
This is an old mock-up for a dual Ethernet module. The design is simple as it is a 3-port Ethernet Switch with 2 external PHY’s and one internal RMII port, so the MCU just run lwIP using a RMII port as before and it is in effect a switch so you can connect modules in…
It is a while since I designed this ECU Main board and to my shame I admit that I did not even assemble the first version because the solutions and SW is the same as for the 3 x CAN board. I am considering requesting new PCB’s now as soon as I am finished with…