3WD RPi-flex PCB robot
Description
PDFA set of printed components to build a 3WD robot that can be controlled and managed by a Raspberry Pi4 single board computer (SBC) - where omni-wheels with custom adaptors are used on all three geared drive motors.
Detailed descriptions of all aspects of this evolving project are at this link with additional information on the additional 3D printed component options provided at this link. The additional components used are all part of a more general ‘flexible chassis’ approach that has its complete set of components at this Prusa link, but are repeated here for completeness.
The main, single plate 3D printed chassis is designed to allow a standard set of drive, sensor and other components to be assembled where the 3D printed chassis and all the components use 1.75mm PLA and a layer height of 0.15mm.
Print details for the chassis plate and each component produced on an i3 Mk3 are shown in the table below.
| component file name/description | needs support (Y/N) | brim (mm) | filament length (m) | print time (i3 Mk3) |
| 3WD_chassis_plate05stl: main chassis plate | N | 5 | 14.05 | 3h 51m |
| 6x_motor_fixing_tab02.stl: tabs that insert into the chassis plate to secure the drive motors | N | 3 | 1.99 | 49m |
| slide_switchx4_spacer01.stl: slide switch spacer | N | 0 | 0.11 | 4m |
| 2x_L298N_vcradleExHi_s-lugs02_roty90.stl: vertical fixing mount for a L298N motor controller | N | 0 | 2.41 | 1h 3m |
| 2x_32mm_top_open_bat_holder02.stl: two 32mm 5000mAh 5V/2A battery bank mounting clips | Y | 0 | 2.20 | 50m |
| HC-SR04+camera_servo_arm09-repaired.stl: servo mounted ultrasonic sensor and USB camera mount | Y | 3 | 2.83 | 1h 48m |
| OLED1_flat08-front+back.stl: 128x64 OLED 2pc mount assembly for the 27.3 mm wide and 27.8mm high OLED | N | 0 | 2.50 | 1h 10m |
| OLED2_flat05-front+back.stl: 128x64 OLED 2pc mount assembly for the 24.7mm wide and 27.0mm high OLED | N | 0 | 2.62 | 1h 12m |
| omni_wheel_adaptor01-connector.stl: main inner adaptor for an omni-wheel | Y | 0 | 1.70 | 52m |
| omni_wheel_adaptor02-3x_hub_cap.stl: three outer hub caps used to secure the inner adaptor to an omni-wheel | N | 0 | 1.28 | 29m |
Tags
Model origin
The author marked this model as their own original creation.
