Link to lesson

Tasks:

Group task:

Characterize the specifications of your PCB production process.

Remake pattern, trace width:

https://drive.google.com/open?id=1PxuCaLghjXdwtojGNXlTRARbe7BW6fRqESJmR21lWww

Individual task:

Make an in-circuit programmer by milling the PCB,

http://fab.cba.mit.edu/classes/863.16/doc/projects/ftsmin/index.html

http://fabacademy.org/archives/2015/doc/projects/FabTinyStar/

Medbring forlængerkabel

Then optionally trying other processes

• Vinylcutting, Sewing,

Detalied pictures of solderingboards!

See video:

https://www.youtube.com/watch?v=XdamEhs2RIk&list=PL-xEsC0ZUCUM42QNHaOOdoOwYg0j251dU&index=1

Bits:

0.010

1/64

1/32

Milling process:

Fixture the board

Underlay: Sacrificial material

Zeroing: Set the tool right on top of the material

Lower bit, at fasten set screw (watch not to overturn)

Tool life-time (not clean cut aways = buy a new bit).

Deburring:

Cleaning: Soap and water

Soldering:

Orientation:

• Læg en klat loddetin på det ene ben
• Placer komponent med tang
• Lod det andet ben færdig
• Resolder det første ben

Order:

Gå fra bund til top og fra inderst til yderst

Desolder:

Læg en lille klat tin på "Solder braid" og brug det til at trække tin ud.

Other methods:

Vinyl cutting copper

Idea: Slide diodes in lasercut

Materials:

FR4 - glass, should not be milled.

FR1 Paper reinforced - velegnet til fræsning, men ikke så varme tolerant.

Epoxy Film

Cobber tape

Sider:

1

1,5 med 0 hm modstande over

2 Top og bund

4 Ground og power som mellemlag

Solder mask only makes it able to solder where needed.

Silk screen

Vias:

Kan evt. bruge pop-nitter (rivets)

En lille ledning og loddetin

Komponent-montering:

Surfacemount

Through home

Neils tanker om breadboard:

Kan ikke bruge surface mounted

Lav og modificer et board i stedet for at bruge breadboards.

Et board kan modificeres:

Tilføj ledninger / jumpers

Skær forbindelse over.