This is an early draft of a new, scalable control system for the PnP and later CNC machines. It is based on my own PLC system. I will re-use an older 3D Print control system or even get a OpenPnP control system in the first place, but I want to replace it with my own…
First I managed to solder on the MCU the wrong way and secondly I did not manage to solder some of the pins – I am seriously looking forward to having PnP machines doing this job, but my first module is finally working after ca 7 hours of manual soldering. Leds and SWD is working…
I paid 31.- USD for 4x 4 layer PCB’s from JLCPCB and they arrived after 1,5 week. The only drawback is that they do not pay tax directly so DHL had to do that charging me another 30.- USD for Tax and Handling. But, I am very pleased with JLCPCB so far. Below is a…
The 4 Module Motherboard grew to 51 x 100mm as I decided to add the power connectors (seen on right above) outside the module area. You can also see two 5V regulators on the motherboard. Each SPX3819 deliver 500mA and I can feed of 6-8V or 12V with jumpers, but I could also add a…
My first choise for a MCU for the I2C/SPI Adapter card was STM32F042F6 since I have 4 of these in my stock, but buying these now is a nightmare. Looking at MCU’s I really would like to use STM32G0B1KE, but price difference between ST and Digikey is a 3 x. so what I decided to…
My next module is a TOF sensor that detect distance to objects, but those modules are based on I2C and I might need some distance between detector and PLC, so I have 2 options. I can move a PLC module close to the I2C device or I can use a separate RS485/CAN Interface. It sound…
I want to add TVS or Photo couplers to the PowerServoe and looking at the PCB lanes above you can see it is only five lanes crossing from left to right and I have plenty of space. All the caps are leftovers from PWM3 and can be partly removed if needed. This one is easy…
I decided to go with a Power Key, meaning the motherboard will provide 24V, 12V and 6-8V on 3 separate pins. The module then decide what power it need by pin usage as illustrated below. The top image is my Power Servo Controller, while the lower one is PWM3. If a module need to select…
This is a 2 x Power Servo module I just made based on the PWM3. The circuit is very similar except I removed the DRV8313 and 3 of the current sensors. Controlling a servo is about sending a pulse at 50Hz between 500uS to 1500uS – and I have some 60Kg Servoes that can drain…
I have just made both these boards, but strugled far more to route the PWM3 board than Ethernet board – looking at the two I got a bit surpriced – On the top board (Ethernet) you can see the same infrastructure components as on the bottom outlined – the top has an extra SPX3819 and…