µC for Midi-Kit with Midi-Switcher Programm V2.X

Microcontroller-controlled MIDI switcher for channel switching or loop switching. Operation can be performed either via MIDI or a footswitch (momentary switch).

!!! UPDATE !!! With the May 2019 update, the following adjustments were made to the module:

• The large relay board has been removed and is no longer included in the kit, as a wide range of different relays with carrier boards is now available, offering much more flexible applications.
• The documentation has been consolidated and is available as a PDF download directly with the kit.
• The microcontroller with the firmware is no longer included in the kit and must be ordered separately depending on the desired version.

These changes allowed us to offer the kit in a more universal, flexible, and cost-effective way. More short information and software on the >>TT-Midi-Switcher project page

Included in delivery:

• Controller board
• Components for 5V onboard power supply
• MIDI socket
• ULN2803A driver IC
• Optocoupler for MIDI-IN
• Crystal, resistors, and capacitors

NOT included in delivery (order as needed!):

• Relays, relay carrier boards, and flyback diodes
• LEDs and current-limiting resistors
• Buttons and switches
• Cables and wires
• Microcontroller with firmware

• High Power Resistor
• 5W 5% High Ohm Cement Power Resistors
• Size: 22 x 10 x 9 mm
• RoHS Compliant

• High Power Resistor
• 5W 5% High Ohm Cement Power Resistors
• Size: 22 x 10 x 9 mm
• RoHS Compliant

• 4 x cagenut M6
• 4 x thread screw M6 x 30

Drill Ø: 12 mm
Rated voltage: 250 VAC
Rated current: 10 A (VDE), 16 A (UL/CSA)

• High Power Resistor
• 5W 5% High Ohm Cement Power Resistors
• Size: 22 x 10 x 9 mm
• RoHS Compliant

Active, serial FX-Loop for a subsequent installation in an existing tube amplifier
The FX-Loop works with  two LND150 in the send and in the return stage. The send and return level can be adjusted to their optimal value with two potentiometers. The Loop works with the present high voltage of the amplifier.
It has two inputs for low and high signal levels.

Input Levels:
InA: 30 - 60 Vpp, max. 65 Vpp
InB: 10 - 15 Vpp, max. 18 Vpp

The FX-Loop utilize POTENTIALLY FATAL HIGH VOLTAGES.
Seek help from a competent technician if you are in any way unfamiliar with high voltage circuits.
Use at your own risk.

Files:

• Documentation

• Type: Cancap
• Capacitance: 100 µF
• Voltage Rating: 500 V
• Tolerance: -10 % / +30 %
• Operating Temperature Range: - 25°C / + 70 °C
• Dimensions: Ø 25 mm x 40 mm
• Termination Style: radial, Snap-In mount

• Type: Cancap
• Capacitance: 250 µF
• Voltage Rating: 500 V
• Tolerance: -10 % / +30 %
• Operating Temperature Range: - 25°C / + 70 °C
• Dimensions: Ø 35 mm x 88 mm
• Termination Style: radial, solder-lugs