User manual

ASURO - 10
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Fig. 3.2.: Basics for soldering
While soldering, some smoke will be generated which may cause damage to your health.
Avoid breathing gases or work under a cooker hood. Using solder for non-electronic use and
using resins may destroy components.
3.2. Preparing parts
While soldering small parts you will need some tricks and tips to reach the soldering area. When
you already have soldered before you already may have noticed that there is always one hand
short (a tool called third hand can solve a part of this problem).
Some parts (transistors, LEDs, ICs, switches, capacitors and jumper) are already prepared to  t
into the PCB (printed circuit board), but diodes and resistors have to be prepared to do so.
Resistors are to be placed vertically in ASURO. To do so, one leg remains in its original position,
the other one is to be bent 180 degrees. Bending must de done at a curvature of 2.5 mm diameter
at a distance of a few millimeters from the resistor body to avoid damage to the part.
Diodes are inserted for horizontal position. To do so both legs have to be bent (eg. by pincers) at a
distance to  t into the holes of the PCB.
Processor IC1 ATmega, IC3 CD4081and the IR-receiver IC2 SFH5110-36 are sensitive to
ESD (electrostatic damage). They may be damaged by simply touching or even reaching for
these parts if you have been charged with electricity (eg. by walking on a carpet).
Before handling these parts you should discharge yourself with a discharging bracelet,
connected to ground or at least by touching a grounded heater system or a metallic case of
equipment.
Electronics
DANGEROUS END !