Raspberry Pi - Samples for Robotics, Node, Python, and Bash

raspberryPi

robotics

intent:

Currently designed to act as programmable sentry.

🔹 control	: RPI_0w using NodeJs server to access GPIO Python code
🔹 movement	: 4 MG995 Servos, 2 subMicro Grippers & HS55 Servos, PCA9685 I2C Controller
🔹 sensing	: RPI 2.1 Camera, Insiq Bluetooth Speaker, Microphone MI-305
🔹 travel	: Tamiya Track, Double Gearbox, 2 F130 DC Motors, L293D
🔹 added	: 10 mm color LED, USB mini microphone
🔹 power	: rechargeable TL-PB 10400 & TL-PB 5200 mAh Powerbanks

Explores various bare metal programming technologies. Future plans include:

▶️ completion of the I2C servo operation
▶️ VAC (Voice Activated Commands) for more autonomous response
▶️ simple AI NLP for generalized communication
▶️ ESA AstroPi SenseHat for environment detection

The descriptions below show the most recent developments first.

robot 3 / replaced Steppers with Servos

control: PCA9685 16 Channel 12-Bit PWM Servo Motor Driver
servos: (4) Servo Motor, PN: MG995
speaker: USB Bluetooth Speaker Insiq PN: 4326595940 🔹 (upgrades BT3500SLV)
servos: (2) Hitec subMicro Servo motor, PN: HS55 🔹 (upgrades HS300)
grippers: (2) Actobotics subMicro Gripper Kit, PN: 637104 🔹 (upgrades “A” Grippers)

The SketchUp 3D drawing required only new Flange & Gripper drawings. All the other components were accessible online.

steppers: (4) Stepper Motor 28BYJ48 🔸 (later removed)
control: (4) ULN2003 Driver Board 🔸 (later removed)

The Steppers were compact, but required too many GPIO leads for a RPI 40 pin J8 form factor. Some website discussions implied that the RPI timing is not reliable enough for many I2C protocol calls.