control for servo control, servo motor, model making, automation, servo

Description

Description
The servo control
(Cod. VE015-008)
, allows you to manage, through the use of a button or switch (selectable with a solder pad on the board), two servos with parallel movement and, if necessary, manage a third servo with movement in counter-phase.
The circuit simplicity combined with the small size allows the use of this module in the most varied applications where mechanical control is required.
Technical data
Supply voltage:
4 - 7Vcc;
Absorption:
100mA (Max) at 7Vdc;
Speed adjustment:
single turn linear trimmer;
Opening angle adjustment:
single turn linear trimmer;
Supported servos:
Analog and digital;
Six-pin connector for the parallel connection of two servos;
Three-pin connector for the connection of the servo with rotation in counter-phase;
2-pin terminal block for connecting the button or switch;
Operation with button or switch selectable directly from the board.
Use of the circuit
The servo control allows you to manage analog and digital servos easily and economically. Control is entrusted to the 8-bit microprocessor
"12F1571"
home Microchip, it:
monitors the state of the input for the button;
takes the angular position and the movement speed from the two trimmers;
generates a PWM signal for motor controls.
The opening angle is adjustable by acting on the trimmer
"ANGLE"
, turning to the left, the servo opening angle increases, turning to the right, the opening angle decreases. The movement speed is adjustable by acting on the trimmer
"SPEED'
, turning to the right, the speed decreases, turning to the left, the speed of the servo increases. The "SJ1" jumper allows you to select the operating mode:
SJ1 closed: button operation;
SJ1 open: operation with switch;
The jumper must be closed with a weld.
Operation of the "Counterphase" system
We attribute the name
SERVO2
to the servo wired on the single connector, and
SERVO1
to the one wired on the double connector; as soon as power is supplied to the circuit, the
SERVO1
moves to the rest position at an angle of
0 °
, while the
SERVO2
moves to the rest position at an angle of
180 °
.
By pressing the button that activates their movement, the two servos start moving with the speed set by the trimmer
"SPEED'"
and continue the race until they reach the corner set with the trimmer
"ANGLE"
.
Ex:
displacement angle set to
40th
, the
SERVO1
takes on an angle of
40th
while the
SERVO2
of
140th
;
displacement angle set to
170 °
, the
SERVO1
takes on an angle of
170 °
while the
SERVO2
of
10th
;
adjustment
After carrying out all the connections above, proceed as follows for the adjustment:
Rotate the trimmers (
ANGLE
is
SPEED'
) in the central position;
Supply power to the circuit (the actuators moves to the initial position, i.e. the rest position);
Press the wired button or switch on the input
SWITCH
(the actuators rotate to the open position regulated by the trimmer);
Act on the trimmer
ANGLE
to adjust the desired opening angle and act on the trimmer
SPEED'
to adjust the execution speed.
Video
Servo control - YouTube