You are currently browsing the tag archive for the ‘etching’ tag.
We enjoyed this (sponsored) segment from Make about etching circuit boards. Like Collin, we got our start etching boards we found on the web, at first with toner transfer and later UV photo masking. We didn’t know how the circuits worked, but it was still exciting to build something cool.
Our current method for single-sided prototype boards is about the same as in the video, but we use inkjet masks. Usually a mix of all ink colors, often called high quality black, has better UV resistance than black ink alone. We expose the board for 1 minute and 28 seconds under a tanning lamp from a thrift shop.
Do you etch your own PCBs? We send double-sided PCBs to the board house, but still etch simple single-sided designs. Bus Pirate v0, va, and v1 were all etched on the stove in Ian’s kitchen.
If you don’t want to etch your own Bus Pirate PCB, you can buy an assembled Bus Pirate at Seeed Studio for $30, including worldwide shipping. Purchases at Seeed Studio support further development of this open source hardware.
Instructables user ArduinoFun shows how to etch PCBs at home using a positive photo-resist. This method involves printing the PCB design on an inkjet transparency, exposing it under a UV light, developing in a basic solution, then etching in an acid.
Do you etch your own PCBs? What methods have you tried?
This is exactly how we etch prototype PCBs. Some of our tips and tricks are listed after the break.