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Frequency central
Build documentation for:
High towers
Featuring code by Jetroid
Main PCB
Control PCB
High Towers is a 4 channel programmable and addressable clock divider. It is more than the
sum of it's parts.
High Towers internal operations can be considered as 4 clock dividers slaved to an incoming
clock. The 4 clock dividers are labelled A, B, C, and D, the divisions for each divider may be
selected using the presets and the individual division selectors. The clock dividers can be set
to count up, down, or to one of a variety of modes that move between counting up and
down. Furthermore, the division of each clock can be set by external CV.
For further information see the High Towers User Guide.
Key to PCB screen print:
n: This signifies NPN BC547 transistors. Note the correct pinout as shown by the half circles.
Please observe the correct polarity for all ICs, voltage regulators, diodes and electrolytic
capacitors.

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Summary of Contents for Frequency Central High Towers

  • Page 1 Featuring code by Jetroid Main PCB Control PCB High Towers is a 4 channel programmable and addressable clock divider. It is more than the sum of it’s parts. High Towers internal operations can be considered as 4 clock dividers slaved to an incoming clock.
  • Page 2 Bill of Materials You will notice that all of the components listed below are also hyperlinks to where I buy each specific part from. You can also use the hyperlinks to find out more about what each component looks like. If you want to know even more, Google is your friend.
  • Page 3 Main PCB assembly 1. Solder the diode and all resistors 2. Solder all three IC sockets 3. Solder the non elecrolytic capacitors 4. Solder the 78L05 and BC547s– watch the polarities! 5. Solder the box power header. Make sure the notch lines up with the screenprint legend.
  • Page 4 Control PCB assembly 1. Place the PCB on a flat surface. Place the 2 tactile switches into their solder pad. Do not push them all the way through, they should sit proud of the PCB (see photo), their legs should not protrude through the other side.
  • Page 5 1. There is nothing to calibrate on this module – cool! 2. Go forth and divide. Troubleshooting Not all DIY builds work first time. The vast majority of build issues are down to soldering inconsistencies. This is far more likely than a bad IC, for example. The first step of successful troubleshooting should always be to reflow all soldering to eliminate any dry joints (bad connections) or solder bridges (short circuits).

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