Circuit diagram

3Dsimo Kit
Device: 3Dsimo Kit
Rev. 1.00 Page 5/18
The extension board shown in Pic. 1 is made in KiCAD, which can be downloaded for free on
kicad-pcb.org for a variety of operating systems. All production materials, schematics and the PCB
can be found on https://github.com/3dsimo/3dsimo_kit .
3.1 Modification of Arduino Nano-like board
To allow heating of the nozzle with enough power, the diode at the miniUSB input must be replaced
with interconnect (0 Ohm resistor). The placement of the diode is shown (red) in the following picture.
If this modification is not performed, the diode will overload and burn and the device would become
non-functional. The board, which is included in the 3Dsimo Kit, already has this modification.
Pic. 2: Placement of the input diode, shown already replaced with a 0 Ohm resistor