I changed my prototype designs to simplify soldering without needing an axle or bearing in the middle. I found a video that suggested scoring the board and snapping it instead of drilling. I also modified my curved rhombus design to create a coil-dense circle that should work well for testing.
Second revision of motor coils
I tried a new technique for creating circuit boards using pre-sensitized boards, baby oil, and UV light. I attempted to process PCB motors quickly but had mixed results due to underexposure and overexposure. I need to make the traces thicker and improve UV light dispersion.
Too faint to etch
I tried etching a copper plate with ferric chloride acid, but the results were disappointing. I suspect the issues were due to scratches on the etch resist and thick traces. The resistance was lower than desired, showing only 1 Ohm instead of the expected 10 Ohms.
Poor etching
I found an open-source program that could convert my designs into millable G-code I could cut with a CNC router. With some revisions in KiCAD, I created a usable design with vias at the spiral tips and my winding spirals.
Legitimate PCB software
I exported Gerber files from KiCAD and imported them to FlatCAM. I made a mistake in recording the tooltip size, but corrected it later. The routing program cooperated in exporting G-Code, but I need to account for tool width from now on.
Circuit converted for milling
My smallest routing bits sizes were 0.8mm and 1.0mm diameters. I partially removed the outer winding and moved one via from the motor hub to the rim to make the motor over 70mm wide. The second hubward via connects a second layer and is mirrored from the first.
Wide gaps between traces
The rest of the summary posts have been arranged by date.
First time here?
Completed projects from year 1
Completed projects from year 2
Completed projects from year 3
Completed projects from year 4
Completed projects from year 5
Completed projects from year 6
Completed projects from year 7
Completed projects from year 8
Completed projects from year 9
Completed projects from year 10
Disclaimer for http://24hourengineer.blogspot.com and 24HourEngineer.com
This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.
All information on this blog, or linked by this blog, is not to be taken as advice or solicitation. Anyone attempting to replicate, in whole or in part, is responsible for the outcome and procedure. Any loss of functionality, money, property, or similar, is the responsibility of those involved in the replication.
All digital communication regarding the email address 24hourengineer@gmail.com becomes the intellectual property of Brian McEvoy. Any information contained within these messages may be distributed or retained at the discretion of Brian McEvoy. Any email sent to this address, or any email account owned by Brian McEvoy, cannot be used to claim property or assets.
Comments to the blog may be utilized or erased at the discretion of the owner. No one posting may claim property or assets based on their post.
This blog, including pictures and text, is copyright to Brian McEvoy.
I tried a new technique for creating circuit boards using pre-sensitized boards, baby oil, and UV light. I attempted to process PCB motors quickly but had mixed results due to underexposure and overexposure. I need to make the traces thicker and improve UV light dispersion.
I tried etching a copper plate with ferric chloride acid, but the results were disappointing. I suspect the issues were due to scratches on the etch resist and thick traces. The resistance was lower than desired, showing only 1 Ohm instead of the expected 10 Ohms.
I found an open-source program that could convert my designs into millable G-code I could cut with a CNC router. With some revisions in KiCAD, I created a usable design with vias at the spiral tips and my winding spirals.
I exported Gerber files from KiCAD and imported them to FlatCAM. I made a mistake in recording the tooltip size, but corrected it later. The routing program cooperated in exporting G-Code, but I need to account for tool width from now on.
My smallest routing bits sizes were 0.8mm and 1.0mm diameters. I partially removed the outer winding and moved one via from the motor hub to the rim to make the motor over 70mm wide. The second hubward via connects a second layer and is mirrored from the first.
The rest of the summary posts have been arranged by date.
First time here?
Completed projects from year 1
Completed projects from year 2
Completed projects from year 3
Completed projects from year 4
Completed projects from year 5
Completed projects from year 6
Completed projects from year 7
Completed projects from year 8
Completed projects from year 9
Completed projects from year 10
Disclaimer for http://24hourengineer.blogspot.com and 24HourEngineer.com
This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.
All information on this blog, or linked by this blog, is not to be taken as advice or solicitation. Anyone attempting to replicate, in whole or in part, is responsible for the outcome and procedure. Any loss of functionality, money, property, or similar, is the responsibility of those involved in the replication.
All digital communication regarding the email address 24hourengineer@gmail.com becomes the intellectual property of Brian McEvoy. Any information contained within these messages may be distributed or retained at the discretion of Brian McEvoy. Any email sent to this address, or any email account owned by Brian McEvoy, cannot be used to claim property or assets.
Comments to the blog may be utilized or erased at the discretion of the owner. No one posting may claim property or assets based on their post.
This blog, including pictures and text, is copyright to Brian McEvoy.
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