Week 5

This week I did PCB milling and then soldering of the components of the in-circuit programmer. I started with the PNG of the future circuit and vectorized it in Corel. Then I used ArtCam software and made G code for the milling CNC.

I chose to produce a FabISP board based on Attiny44. Below is its image

First of all, I need to prepare a Gcode for our machine.

I opened it in ArtCam, and prepare toolpath with endmill parameters.

First I chose countour strategy:

Then clearing all area

Then adaptive clearing, smart algorithm

I used a 0.3mm diameter mill, parameters are below

• Title: GM-2ES-D0.3
• Manufacturer: ZCCCT
• Workpiece material: steel, cast iron, magnesium
• Tooth type: spiral
• Chip output direction: upwards
• Number of teeth (hits) Z: 2
• End face type: flat
• Operating diameter d, mm: 0.3
• Cutting length l, mm: 0.6
• Shank diameter D, mm: 4
• Total length L, mm: 50

This is video of milling CNC (Advercut 6090T) callibration and checking process:

Then I started PCB milling process:

Then I’ve made the in-circuit programmer by milling the PCB. Here is the video:

Then I soldered circuits - together with my kids. I’ve used soldering station, paste and air heater/drier. Long time ago I’ve worked with soldering iron, so - this new way of soldering is much easier and exact.

Here are the results:

Here is the result, ‘hero shot’ of my board:

And here is the signed photo of manufactured PCB:

Conclusions This week was really fun. First time I used a milling machine and soldering station, and it is really cool. I will use these skills and machines during FabAcademy and I will make my Cury project with new materials on the milling CNC.