Home Final Project Project Tracker
week0: CAD & Project Concept week1: Parametric Design & Laser Cutting week2: 3D Scanning & Printing week3: Large Format CNC week4: Molding & Casting week5: Clank & Electronics week6: Electronics Design week7: Embedded Programming week8: Input Devices week9: Project progress week10: Output Devices week11: Networking & Communication week12: Interface & Application Programming

Week 5: Electronics Production... but really, week 5 is HMAA 2020 cohort vs. the Clank

Group Assignment: Characterize the design rules for your PCB production process

Group assignment page

Clank Phase 1: Assemble!

What a week! Following the assembly videos, I was able to put Clank together with minimal hiccups. I stripped a couple screws, but, for the most part, things went pretty well throughout the assembly phase.

Step 1: Organizing parts & assemble subassemblies.

Step 2: Combine subassemblies.

combine subassemblies
Step 3: Wire it up.

Clank Phase 2: Bring it Online!

My experience operating Clank for the first time was a little rougher than the assembly process. Such is life...

Step 4: Face the bed. I encountered a few challenges: 1. I did not correctly home my bit in the x and y coordinates, so my machine faced a section that was slightly off center. 2. I let my computer fall to sleep half way through the cutting process (see video below), so Clank stopped tracking part way through the cutting task. I had to manually power down the machine to stop it. 3. After manualy powering the machine down, the z-motor started continually beeping at me when I powered it up again. I powered down and unplugged logic, and this seemed to work.

Step 5: Line test file. Cut traces with 1/64" end mill.

cutout, broken bit
Step 6: Stall your machine, lose your x,y location, break your 1/32" end mill. This tool change proved the most frustrating part of this process for me. I lost my location and broke a bit in my first test, and in my second test, my fixturing failed. See video below:

test failures
Eventually, I was able to successfully cut a test. Still, I think my bit change and secondary cutout pass workflow can definitley be improved.

test failures
Step 7: With a test complete, I tried my Clank's hand at a PCB board. It came out ok. It needs some de-burring though, and I'm not sure about the size. I need to look at the specs again.

test failures
Step 8: Keep testing. I have workable milled boards, but they are a little rougher than they should be. Still need to trouble shoot the Clank settings.

test failures
test failures
PNGs of my two test boards.

Phase 3: Stuff some boards

To keep this thing moving forward, it's time to stumble my way through some soldering.

test failures
I found that I was missing some components to fill out the FabTinyISP. Here are the list of all the components:

1. 1x ATtiny45

2. 2x 1k ohm resistors

3. 2x 499 ohm resistors

4. 2x 49 ohm resistors

5. 2x 3.3v zener diodes

6. 1x red LED

7. 1x green LED

8. 1x 100nF capacitor

9. 1x 2x3 pin header

test failures
not-so-pretty soldering job, but the components are stuck on there.

PCB one was not pretty, so I wanted to try another. I think this soldering thing is going to take some time to hone.

test failures
Board 2 went a little better, but it's still pretty ugly. Again, this is going to take some practice.