Purple Vibe v1.0.1
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9
7.
Power supply
The PCB is designed to use a regular 9V adapter and raise the voltage to 18V with a built in
charge pump. I do not advise the use of a battery in this build so I left it out in the
descriptions! But feel free to have a different opinion and incorporate it anyway. Some
prefer to use a dedicated 18V wall wart and in that case you must leave out the onboard
charge pump by doing the following:
DO NOT SOLDER: D1, D3, C30, C31 and IC1
EXTRA JUMPER: Short D3 with a jumper
D2
should be a
1N5818
or
1N5819
.
8.
True bypass
This build is adapted to be used with true bypass switching. In the original there was no true
bypass, only a switch that turned off the lamp. The wiring of all these options will be
discussed in the special off board wiring section, just know that if you are not using true
bypass then you can leave out the optional pulldown resistor
R58
.
9.
Light shield
You can make a light shield out of almost anything. The max outer diameter is 23 mm (0,9
inch). You can use a plastic cap and put aluminum foil inside as reflecting surface. There are 4
extra pads around the lamp/LDR’s so you can at
tach some wire to and secure your light
shield.
Ok, just a small bite out of the
LDR orientation discussion. You can solder the LDR’s flat on
the PCB. This way you really need a reflecting light shield, else barely any light will reach the
LDR. If you put the LDRs in an upright position (directly facing the lamp) you do not really
need a light shield as the enclosure will make sure that no real light comes through and the
LDR is close enough to the lamp to catch enough light.
Flat LDR Up right LDR
Some simple light
shield samples.
Содержание Purple Vibe
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