CH32V307 is a RISC-V based MCU that is created by WCH and that got my attention due to it’s low cost – 3.- USD in quantity 1 and down to 1.9 USD from JLCPCB. I have read about RISC-V as an alternative to ARM for years, but I have not paid much attention to it…
I was warned ny JLCPCB that my boards had some strange pad’s – looking at KiCAD I notice the issue above. These via’s are set to have Pad on connected layers only and KiCAD screws up. If I click on the via it correct itslef. Will be interested to see if this board works at…
Identifying and ordering parts is difficult because the part list is not fixed. My first thought on Camera modules was that I needed to go for expensive, high quaity cameras, but reading tells me a 720P camera is sufficient and that higher resolutions just makes the process slower. Anyway – I decided for some 10.-…
I recently started to look into OpenPNP and decided to build my own Pick & Place machine! I will base the machine on LumenPNP (or IndexPNP as it also is called), but I have already started making changes of my own based on what I see done by others. The first job is to understand…
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…