dacb scara arm - customizer version

thingiverse

It appears that this text is a comprehensive guide to using the 28BYJ-48 stepper motor with a Raspberry Pi. Here's a summary of the key points: **Motor Specifications** * Torque: 34.3 mN.m * Friction torque: 600-1200 gf.cm * Pull-in torque: 300 gf.cm * Insulation grade: A (but possibly not really) * Number of coils: 4 **Powering the Motor** * The motor draws 360 mA when using two half-windings at all times. * To be safe, provide at least 400mA for each stepper motor. **Raspberry Pi Power Supply** * With a normal 1-amp power supply (1000 mA - 700 mA), the max current that can be sourced from the GPIO 5V pins is 300 mA. * With a 2-amp USB power supply, the 5V GPIO pin should be able to safely supply 1000 mA, enough to power two stepper motors (~400 mA each). **Stepper Motor Control** * The motor uses a ULN2003APG chip on its driver board. * There are guides and tutorials available for controlling the motor with a Raspberry Pi: + Graham Wideman's J8BYJ-48 overview + Adafruit's Raspberry Pi Lesson 10. Stepping Motors + ScrapToPower's How to connect Stepper motors to a Raspberry Pi w/ code example **Software** * If you want to use @dacb's software, you need to configure the GPIO pins in the source code. * Other software resources are available. Overall, this guide provides detailed information on using the 28BYJ-48 stepper motor with a Raspberry Pi, including specifications, power supply requirements, and control methods.