"You'll Never Walk Alone"

Friday, December 4, 2015

Steering.




Here is a remote control steering set-up on a lawnmower. 
We need something similar , but with a lot more power.


One option is to fabricate a giant servo using a wiper motor.
There are a number of ways to get this right, below are some suggestions we found.
This one requires a hacked servo and a H-Bridge.



This one required a motor driver board and a H-Bridge.


Here is the model that we opted for, a wiper motor driven by a micro servo driver with built in translator and BEC.
No extra H-Bridge needed, or motor driver.
Also extremely powerful.


We aborted this option for this Super Servo that claims to lift 180 kg at 1 cm.
That translates into 1.8 kg at a length of 1 meter.
10 cm >
50 cm >
100 cm > 1.8 kg


Technical Parameter:
- Working voltage:12V~24V (DC)

- No load rotation current:<500mA
- The max torque:180kg.cm(24V) (actual,not theoretical value)
- 1764N.cm(24V) (actual,not theoretical value)
- 90kg.cm(12V) (actual,not theoretical value)
- 882N.cm(12V) (actual,not theoretical value)
- Angle speed: 24V;1.0s/60°(rotate 60 degree need 1.0s),12V.
- Rotation angle:300°MAX.The largest travel distance:300 degree(0~300°electronic limit,adjustable)
- Input mode:Pulse signal (remote controller,singlechip) or analog voltage signal (potentiometer)
- Pulse signal input range:0.5ms-2.5ms,apply to all "multi-channel servo controller","1ms-2ms aeromodelling remote controller","singlechip programming","Arduino".
- Voltage signal input range:0V~+5V
- Control accuracy:0.32°
- Weight:530g
- Gear material:steel
- Outline sizeL95.5mm X 60.5mm X 102.6mm
- Power input:12V-24Vdc (- connect negative pole,+connect positive pole)
- Motor output:M-connect motor negative pole,M+ connect motor positive pole.
- Motor rotation adjustment input:used for controlling angular velocity.
- Angular velocity adjustment input:used for controlling angle range.
Mode option:Jumper cap setting pulse signal input or analog voltage signal input.PPM is pulse signal input,POT is analog voltage signal input.
- Analog control mode:angle input signal is analog quantity ,you can control motor out shaft angle position with potentiometer.
- Digital control mode:angle input signal is digital square wave signal,pulse width is 0.5ms-2.5ms or 1ms-2ms.










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