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I'm starting to get some experience with my CNC router and quickly learning that there are so many variables due to material, cutting tools, and individual machine capability that there will be quite a lot of trial and error.   As with most tools,  the only real way to get more proficient with them is to use the tool for an actual project.   I'm still looking for a tool flow that will work well for me.  I recently got an RPi4 and I 'm going to try to use that as my work ...
ralphjy

Finally got my Pi4

Posted by ralphjy Top Member Aug 21, 2019
I wasn't lucky enough to win an RPi4 in the Win a Raspberry Pi 4 in Celebration of Our 10th Birthday! contest and I didn't have time for a roadtest, so I decided to wait until the 4GB versions became widely available.  I started seeing a lot of them on Amazon, so I bought one along with an Smraza case which came with a 3A USB-C power supply and a fan and heat sinks.  I just got it on Monday.  I downloaded and flashed a 32GB uSD card with Raspbian Buster and got everything assemble ...
ralphjy

TPL5110 Nano Power Switch

Posted by ralphjy Top Member Aug 20, 2019
While building my recent LoRaXes project I realized for successful battery power operation that I need a way to remove and restore power between data transmissions because the components that I was using did not have adequate sleep mode functionality.  I found numerous references to projects using the TI TPL5110 Nano Power Switch to provide that functionality with Arduino compatible boards.  Adafruit and Sparkfun both carry TPL5110 breakout boards.  The Adafruit board is just a bi ...
I had a minor victory on my road to figuring out how to use my new CNC router.   I received the 0.5mm carbide end mills that I bought on Amazon and used one to successfully shorten a proto PCB that I need for my LoRaXes project.  The mill has about 4 mm of cutting depth.  The PCBs that I'm cutting are nominally around 1.6 mm thick.  Not a very impressive looking cutter but it worked.  I increased the spindle speed to 3000 RPM and reduced the feedrate to 80 mm/min and se ...
ralphjy

Genmitsu CNC 3018-PRO

Posted by ralphjy Top Member Aug 8, 2019
I've had great success with my inexpensive AnyCubic 3D printer that I got on Amazon Prime day, so I finally decided to get myself a low cost (under $200) CNC mill. I wanted to get something that would allow me to drill holes with reasonable accuracy and also mill PCBs.   I settled on the SainSmart Genmitsu CNC 3018-PRO.  It has an XYZ working area of 300x180x45mm which is sufficient for most things that I do.  It uses GRBL rather than Mach3 control firmware but I think that s ...