Conventional PCB manufacturing—which is wasteful ... Inevitably, a circuit pattern produced by etching away the excess copper requires large volumes of chemical etchants like ferric (III) chloride and ...

The original design had a single heater PCB using discrete resistors as heating elements. This meant that the heat from active elements spread out to adjacent areas, reducing the contrast and ...

For an introduction to etching your own PCBs at home, we couldn’t think of a better first board. As an Arduino, you’re guaranteed to find some use for it and the ease of manufacture and low ...