Am a newbie and was wondering how to wire Arduino unoR3 with L293D Servo, Stepper Motor Driver Shield and a 1602 LCD Board Keypad shield as only any one of these can be stacked onto the arduino. This is for a motion controlled timelapse slider project.
Use a motor driver module, not a shield. The drivers can become hot during operation, so that they should have free air around for cooling. Also use a modern driver module, with FET transistors for reduced power requirements and heat.
Thank you for the suggestion. Which driver module would you suggest to use with this setup i.e uno+lcd shield from the below choices or others? also another noob assumption is i guess i'll need one module per axis of movement as they drive single steppers, right? and also is there any way/hack by which i can mount the lcd keypad shield on uno (not connecting by wires) and also connect the stepper module by wires
i have searched a few modules as given below ranked in order of preference:
7 Amp High Current Motor Driver by ROBOSOFT SYSTEMS
Spec:
Compact MOS FET driver ideal for use with heavy duty motors
1 Motor Channel
5.5VDC-30VDC operating voltage
7A continuous output current per channel
10A peak output current per channel
M226 IRF520 MOS FET Driver Module for Arduino
Spec:
Operating Voltage Range: DC4.5-20V
Voltage: 3.3V, 5V
Ports: Digital Level
Output load voltage :0-24V
Output load current: <5A (1A above need to add heat sink)
High-Current MOS FET Switch Module DC Fan Motor LED Strip Driver Steples
Spec:
Output current up to 3A (Resistive load)
External power supply can be 4.5 ~ 13.5VDC
Interface logic level can be 3.3V / 5V;
High-level input current is less than 1mA
NMB PM55L-048-HPG9 [2-2 Phase exitation Unipolar Const. Volt, Bi-Polar Chopper ]
(specs attached as image...)
and i also have a hi torque geared 12v dc motor!
now which motor should i use (or do i have to get a new one?) and with what driver module? the objective is to add timelapse motion control to my existing 24 inch igus slider using timer belt.
Do you have some reason to believe that the salvaged printer motors will be suitable for your project?
It would be a shame if you bought everything and had to start all over.
The way successful people work is to measure the required force and torque for the mechanical assembly, then select the appropriate motors, drivers and motor power supply.
well as i see, both of the salvaged ones are hi torque motors which is my primary requirement to move the slider carriage (with ballhead + camera;4-5kg) on inclines & vertically...actually had earlier decided (therefore ordered) on the geared dc motor for its torque and low power consumption... then got suggestion from another maker to use stepper for more accuracy over the geared dc motor... (i hope that is true) so the salvaged steppers came into the picture... a bit confused now...!
any/all suggestion would be most welcome...
Those are both low-current motors so you could use a Sparkfun Easydriver or BigEasydriver or a Pololu DRV8825 or Pololu A4988.
Be sure to adjust the current (amps) setting on the driver board to protect your motor.
If you already have the motors it seems worthwhile to try them. If you think you might need more powerful motors I suggest you buy the more capable stepper drivers.
@jremington:
as per the manual, i see the PM55L-048 (2nd in list) stepper being suggested for
** OA Equipment: Printers/Scanners
** Industrial Equipment: Flow control valves
** Toys: Slot machines and
** Home Automation Appliances: Sewing machines
i don't know the calculations but was wondering if a lower that "what you said" torque would work for the above applications like sewing machines... what does this torque graph imply in terms of caring load? this stepper is surely feels like a heavily built boy and weighs like a paperweight...
now am more confused than before...!!
@Robin2 thanks for your suggestions and photo insert tip...
@Robin2
ordered both Pololu DRV8825 & Pololu A4988 module... hopefully will be able to wire em up correctly... if not will try out the 12v DC, 300 rpm High Torque - Side Shaft Geared Offside Motor
Specifications - Voltage - 3v to 12v
RPM - 300 (at 12v)
Nominal Voltage - 12v;
No- Load Current - 20mA
Full Load Current - 800mA
Full (Stall) Load Torque - 5 kgcm
will go in for a new stepper motor if none of the salvaged ones do the job...
thanks again...
