PICO (MellBell) + HC-05 (BLE Controller) + Stepper Motor

Thread Starter


Joined Oct 6, 2019
Hey, guys!

I need a remotely (Bluetooth) controlled stepper motor. It has got to be SUPER tiny (hence PICO).
Does anyone know if PICO could be used to control a stepper motor via Bluetooth (HC-05)?

Thanks ahead!

PICO details>>

Technical Details

Size: 0.6" x 0.6" Reset Enable: 1 pin/button
Weight: 1.1 Grams Microcontroller: ATmega32u4
Digital I/O Pins: 8 Operating Voltage: 5 V
PWM Channels: 1 Input Voltage: 7-12 V
Analog Input Channels: 3 Bootloader: Leonardo Compatible
DC Current per I/O Pin: 40 mA Flash Memory: 32KB (ATmega32u4) 4KB which
are used by the bootloader
SRAM: 2.5 (ATmega32u4) Clock Speed: 16 MHz

Last edited:


Joined Oct 6, 2013
Going to take a guess that it most likely won't. If the current draw of the motor is low enough it would be possible to use just the pico I would think. Otherwise you'll need some circuit between the pico and the motor. Most times an off the shelf stepper controller can be used pretty easily.