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Barton Musical Circuits BMC052, Быстрый старт

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BMC052. Chordizer

Last updated 8-27-2017

If you have any questions, or need help trouble shooting, please e-mail 
[email protected]

I Overview/Controls/Inputs/Outputs
II Schematic
III Construction

A.Parts List
B.The PCB
C.Wiring
D.Callibration

Содержание BMC052

Страница 1: ...ed 8 27 2017 If you have any questions or need help trouble shooting please e mail Michael Bartonmusicalcircuits com I Overview Controls Inputs Outputs II Schematic III Construction A Parts List B The PCB C Wiring D Callibration ...

Страница 2: ...IN jack 3 CHORD knob This knob selects the memory bank to use in SAVE or LOAD operations There are 8 memory banks total The knob attenuates the input of the CHORD jack which is normalized to 5V when nothing is plugged into it When using a 0 to 5V range sequencer to select chords leave this knob fully clockwise 4 QUANT knob This selects what scale is used in quantization The table below outlines th...

Страница 3: ...ntized output appears at the OUT1 jack 2 AUX input This is an auxiliary input jack The voltage is attenuated by the AUX jack and then mixed with the MAIN input 3 TRACK input This input is normalized to 5V when nothing is plugged in When this input goes low voltage is less than 0V the module will ignore changes from the MAIN and AUX voltages 4 LOAD input This initiates a load like hitting the LOAD ...

Страница 4: ...II Schematic ...

Страница 5: ...age to between 0V and 5V To the right of the PIC in the schematic we see the wirepads of the toggle switches and some resistors Each toggle wirepad will be at either 0V or 5V and this resistor network known as a R 2R ladder converts the toggle positions to a single voltage This allows us to read several toggles with a single pin of the PIC Below the toggle inputs are the main CV input and AUX inpu...

Страница 6: ...wise noted 1K ohm 7 100K ohm 19 200K ohm 4 100K ohm buss 1 4pin SIP package Or can be made with 3 resistors B100K Pots PC Mounted 4 16 mm Alpha linear taper PC Mounted Like this B100K Pots Solder Lug 3 100K Cermet trimmer 4 3296 package http www bartonmusicalcircuits com makearray html Capacitors Name Value Quantity Notes 01uf 16 Ceramic disc Value not critical 10uf 2 Electrolytic at least 16V rat...

Страница 7: ... I suggest wiring the 5V bus in red on the diagram between the switches and jacks first then the ground bus in green If you are using a conductive front panel and jacks with conductive sleeves you only need to wire ground to the sleeve of one jack as shown If using a non conductive panel or non conductive jack sleeves you should ground all jacks Next I would wire the offset pots and then wire the ...

Страница 8: ......

Страница 9: ...each channel until the output voltage of that channel is exactly 1V 3 If your meter has low resolution turn the SCALE knob fully clockwise to OCTAVES mode 4 Input a 5V signal and turn the offset knobs to 12 O Clock 5 Adjust the trimpots so that each channel is at 5V ...

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