This shows the STM32CubeMX for my 3 x RS-X PLC Module. I find this tool to be quite usefully as it allow you to set up the clock, configure each function and wire the MCU. It also generate a nice PDF document with all details as well as a starting project with all init code…
Been a lot of motor controllers lately so I finally decided to assemble part of my PLC system. What you see here is the motherboard with a simple RS-X module connected. Not all components are assembled yet, but processor is alive. This board have 3 x fully galvanic isolated RS485 circuits and a 2 x…
Investigating the issue one option is that what snapped the TSP54060’s is that my PCB tracks are to close for 60V. You need close to 3000V per cm to create an arch and that is 30V per 0.1mm. I can’t see a weak point, but those pins are 0.2mm apart. A bit of extra solder…
I received the MC3X60 Motor controller PCB’s yesterday and as always it is awesome to see how small my designs are. As this is the first time I use TSP54x60 I instantly assembled this to test and was pleased to see 3.4V out. This circuit worked well giving 3.4V out with input from 12 to…
Every year around christmas I tell myself that next year I will have electronic christmas decorations, and as next year arrive it’s forgotten until it’s to late. A combination of STM32F030 and ULN2003 is excellent for a very small x-mas tree PCB with blinking LEDS and home made tree lights. In fact I have done…
I decided to remove some of the PCB lanes and replace them with high current wires to support 50A currents. I had to extend the board ca 1.5mm at right, but to compensate I also remove the connectors because I need high current support all the way. I like having connectors for <10A solutions and…
Always funny to share 3D models. This shows the right side of the new 60V Universal Motor Controller. I have spaced out the MOSFET channels and moved all components top-side as well as added 2 temperature sensors, a new 60V DC/DC, capacitors on board and enabled JST channel connectors. I have routed 1 channel, but…
This show the new current sensor with INA194. The main reasons for changing to INA194 is that this supports -16 to +80V sensor range on high side + the chip is SO23-5 package that is a bit easier to mount than INA210 was. C15 is a filter capacitor mounted as close to the shunt as…
One of the changes on the new MC4X design is that I space out MOSFET a little and add 2 temperature sensors on the PCB located between 4 MOSFET’s. I use MCP9700 in SO23-3 package that is just the right size. Adding to of this monitoring 4 MOSFET’s each should be work out better than…
Using 100x40mm as format I actually seem to be able to move all components top-side and still add caps on board. I am not sure about density around MCU yet, but this is one driver. The weak links are as always the current paths, but I think this will be ok for 15-25A. This is…