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Beschikbare talen
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about 3 cm above the pcb surface, so that it can be passed
through the eventual housing afterwards.
b) Building the processor pcb:
Fit the following resistors:
R2, 39K (orange, white, orange)
R3, 47 ohm (yellow, violet, black)
R6 through R8, 4K7 (yellow, violet, red)
Fit the IC sockets for IC1 and IC2
Fit the following resistors vertically:
R1, 1K (brown, black, red)
R4, 22 ohm (red, red, black)
R5, 100K (brown, black, yellow)
Fit the 4700uH coil L1 also vertically. This coil looks like a 1/4W
resistor but usually has a brown and thicker body, with the colour
code: yellow, violet, red and gold.
Fit the following capacitors:
C1 and C2, 18pF ceramic
C3, 3n9 ceramic or MKM (sometimes marked 392)
C4, 47nF ceramic or MKM (sometimes marked 473)
C5, 100nF (sometimes marked 104)
Fit the following electrolytic capacitors:
C6, 2.2uF.
C7, 4,7uF.
C8 and C9, 10uF.
C10, 47uF.
C11, 100uF.
Fit transistor T1, BC547 type or equivalent.
Fit the 4MHz crystal X1.
Fit the IR receiver diode D, BPW41 type with its slanting side,
which usually contains a text overprint, towards R3.
Fitting the push button on the solder side.
- Cut off the leads of R7, C11, and C5 as short as possible.
- Position the push buttons into the respective holes and then
carefully solder their connections. ATTENTION: Don't warm up
the connections of the push button too long because this might
irreparably damage it!
Connect the points RY, + and - of both pcb's to each other by
H6713-ED1-20
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