PCB table

Monday, 29 December 2014 16:00 Daniel Eindhoven
Like many electronic enthusiasts I have many leftover PCB's lying around from all kinds of projects. I came up with a good use for them and at the same time creating the perfect piece of tech furniture for every geeks house. Convert a glass table into a PCB table.

The idea is simple, Take a glass surface table and put some pcb's underneath them. I started with a small table in my livingroom. This table has a metal frame and a transparent glass sheet on top. A sheet of wood supports the PCB's. To provide maximum contrast I painted the sheet black. Then just position the PCB's in a nice OCD pattern and put the glass sheet on top.

Resistor calculator (series and parallel)

If you need a non-standard resistor value you could probably realize a close match using two resistor. If you use two resistor in series it is quite easy to figure out which values give the best match; on the other hand, using a parallel connection it is not so easy (at least for me) to find a good combination.
This resistor calculation tool shows which combinations of two resistors (series or parallel) gives a match better than the closest standard value, for the E12 (10%), E24 (5%) and E96 (1%) series.

INPUT DATA

Resistor series to use for the calculations: 

Desided Resistance, R :  ohm

CALCULATED VALUES
Courtesy of Claudio Girardi

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