ADDAC System ADDAC320 Handleiding
ADDAC System
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ADDAC320
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Pagina 1/8
April.2025
USER’S GUIDE . REV01
ADDAC320
SERVO CONTROL
INTRODUCING
From Portugal with Love!
Instruments for Sonic Expression
Est.2009
ADDAC320
SERVO CONTROL USER’S GUIDE
April.2025Revision.01
Welcome to:
page 2ADDAC SYSTEM
WELCOME
At ADDAC we always admired the geniality of Neil Young’s Whizzer, way ahead
of it’s time, a great example how great ingenuity and engineering can come
together to make something great.
Inspired by it’s motor controlled method we created a 4HP solution to control
any knob that doesn’t have a CV input, while also possible to use for other gear
as well (within certain distance constraints).
We use a Servo motor which is a specific type of motor that can be digitally
controlled to go to a precise angle. This motor is controlled by a microcontrol-
ler that also receives an incoming CV voltage from 0 to +5v and lineary
converts this voltage range to the 270 degree Servo motor range.
Using a spring wire and metal couplers the motor shaft is then attached to the
target knob to be controlled which will turn as the Servo turns.
Two other knobs [MAXIMUM ANGLE] & [MINIMUM ANGLE] further allow to control
the “sweet spot” of the target knob, setting a smaller Servo range.
Raising the [MIN ANGLE] knob above the [MAX ANGLE] knob inverts the Servo
range.
SERVO MOTOR
270 degree micro servo motor with metal gears
OFF / ON
Turns the servo operation OFF/ON
MAXIMUM ANGLE
Sets the minimum angle of the Servo Range
MINIMUM ANGLE
Sets the maximum angle of the Servo Range
ATTENUATOR
When no CV is plugged in works as a manual Servo control,
If a CV input is used then it attenuates the incoming CV.
CV INPUT
CV input 0 to +10
Tech Specs:
4HP
4.5cm deep
Up to 300mA +12V
0mA -12V
page 3ADDAC SYSTEM
ADDAC220 User’s Guide
1. The operation principle is simple, the servo motor and target pot shaft are coupled together
using a special fiber/metal wire that twists around itself when the servo turns, sort of like a
spring, forcing the target knob to turn in tandem.
Knobs rotate about 270 degrees so we’re using servos that also turn 270 degrees so that they
don’t go over the pot maximum rotation angle.
In order for this 270 degree range to work properly the servo and target pot need to be
calibrated so that both left most position is matching.
For this we need to make sure both the servo and target pot are fully CCW prior to attaching
the connection wire.
If badly coupled the servo will try to over rotate the pot beyond its maximum or minimum
angle creating a lot of stress on the servo which is blind to this issue and will try its best by
applying the max torque possible trying to force the pot to go over its mechanical range which
eventually will lead to damaging the servo or the pot.
OPERATION PRINCIPLE
270 Degreesº
MAX Rotaion
270 Degreesº
MAX Rotaion
CORRECT COUPLING
0 º
Degrees
0 º
Degrees
OVER Rotation
Pot Max
Angle
0 º
Degrees
0 º
Degrees
PROBLEMATIC COUPLING
Product specificaties
| Merk: | ADDAC System |
| Categorie: | Niet gecategoriseerd |
| Model: | ADDAC320 |
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