I already have 5 stepper motors (28BYJ-48) with their drivers and an Arduino Uno.
I want to make a robot hand that receives a signal from the ECG electrode and then play the game rock-paper-scissors. Each finger needs a stepper motor. but I am unsure if it is possible to control them with uno.
Can anyone help me with this project because I am new to the Arduino world?
Servo motors would seem a better choice than stepper motors for this project.
What's making You uncertain?
The "hand robots" that I have been seeing for sale or DIY use servo motors (180 degree rotation) rather than stepper motors (continuous/360 degree rotation).
Compare servo (above) with five bipolar stepper motors with A4988 motor driver
OP said 28BYJ-48 steppers with ULN boards. That's four pins per stepper.
Not enough pins on most boards, except for a Mega.
An Uno has no problems driving 100+ BYJ-48 steppers at max speed, but the problem is pincount.
Servo motors and maybe a 16-channel PCA9685 servo board seems a good solution.
Leo..
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