Uploading contribution of Sven Freud to replace Current Sense Transfo…

[mmouchous-ledger]

Contribution from Sven F.

They contain my version of the Silicon Toaster with a different transformer. I used a CST 2010 (you can find the datasheet in the folder "hardware/Symbols_Footprints") since the Coilcraft transformer was out of stock in Germany at Mouser, Digikey and Farnell.
Therefore I had to modify the design a little. The footprint of the CST 2010 was too large to put it in the same place as the Coilcraft, so I placed it on the backside of the PCB where still was enough space.
Apart from that I did 2 minor modifications:

• I added a 2-pole pin socket as measurement connector for the pulse voltage, so that I can measure it with a multimeter. I noticed that the red LED begins to flicker when I connect the negative pole of the multimeter with the socket, but I guess that is just a matter of the ADC getting a little confused.
• I also added a 2-pole pin header which is connected to 3.3V and GND respectively of the Silicon Toaster in case you want to connect a device to the same voltage levels as there are on the board.
  Please note, that I added my initials on the Silk screen ("Silicon Toaster v0.2_mod_SF")