Header Termination Terminate the traces going to the header at the bottom metal layer Reason: this is where the IC will be soldered. Header terminates at the top metal layer—not a good practice
How to Change Metal Layer Step 1: Click on ripup, double click a wire to delete.
How to Change Metal Layer Step 2: Move the wires to create sapce
How to Change Metal Layer Step 3: Route wire. Start routing at the top metal level. Step 4: Click once to place the wire in an empty area. Step 5: Switch to the bottom layer Step 6: Make contact with the pad at the bottom layer
Clean the PCB with a scotch pad or fine sandpaper
When the board is shiny, use acetone to remove any oil or grease on the board
General Procedure Transfer Image 1.Run the transparency through the laser printer twice to produce better transfer. 2.Tape the printed transparency on to the a cleaned PCB board. 3.Heat a hobby iron. With light pressure, iron the transparency onto the copper. 4.After the board has cooled, peel off the transparency. 5.Use Sharpie to complete image transfer
Details Instruction for Double Sided PCB Line up the bottom layer with the top layer (with the ink side facing the PCB)
Details Instruction for Double Sided PCB Make sure it can go on the PCB
Details Instruction for Double Sided PCB Slide in the PCB (Kevin Zack)
Details Instruction for Double Sided PCB Tape the transparency to PCB
Tape the printed transparency on to the a cleaned PCB board (Single Sided PCB)
Heat a hobby iron. With light pressure, iron the transparency onto the copper Use highest Setting-- 3
Precaution Etching Solution may leave stain on skin and utensils. The use of rubber gloves is recommended. Avoid prolonged or repeated breathing of vapor or contact with skin.
Develop PCB 1.Ferric Chloride is used to remove the copper not protected by the toner. 2.Place the printed board into a container with a lid and pour about ¼” of the acid solution over the board. 3.Secure the lid and using a swirling motion, agitate the solution for 15 minutes to 30 minutes until the unwanted copper is removed. 4.After the excess copper is removed, pour water over the board to halt the etching process. 5. Dispose the left over chemical properly. (Include the chemical rinsed off with water)