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RESEARCH: Robotis Turtlebot3 Burger

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TurtleBot3 is a new generation mobile robot that’s modular, compact and customizable.
Let's explore ROS and create exciting applications for education, research and product development.

Platform/OS: ROS
Actuators: 2x Dynamixel XL430-W250-T
SBC: Raspberry Pi Model B, 1GB RAM, WiFi
Size: 138mm × 178mm × 192mm
Operating Time: About 2hr 30m
Sensors:
- 360°LiDAR - Detection distance of 12cm ~ 3.5m
- 3-Axis gyroscope
- 3-Axis accelerometer
- 3-Axis magnetometer
- Raspberry Pi Camera Module V2 (not included, but can be attached)

Robotis Product Site

http://www.robotis.us/turtlebot-3/

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RESEARCH: Actobotics Rover Kit

Actobotics has various rover robot frame kits with motors that is solid and snaps together quickly. As the parts are made of rugged plastic, it withstand common dings of operating a moving robot while allowing for easy modificaiton. Below are some of the types of different rovers that can be useful for different projects.

https://www.servocity.com/kits/robot-kits

Junior Runt Rover

Dimension: 7 x 4.4 x 2.1 inches
Voltage: 4.5VDC
No Load Speed: 140RPM
No Load Current: 190mA
Max. Load Current: 250mA
Torque: 800 gf-cm

The Junior kit is designed so you can mount a servo for easy addition of scanning sensors, gripper kits, or arms. The kit is mostly snap-together, only requiring a Phillips Head Screwdriver for assembly!

https://www.servocity.com/junior

https://youtu.be/hQCypE4pDBo

Whippersnapper Runt Rover

Dimension: 7.4 x 7.6 x 3.1 inches
Voltage: 4.5VDC
No Load Speed: 140RPM
No Load Current: 190mA
Max. Load Current: 250mA
Torque: 800 gf-cm

The Whippersnapper is designed so you can mount a servo for easy addition of scanning sensors, gripper kits, or arms. The kit is mostly snap-together, only requiring a Phillips Head Screwdriver for assembly!

https://www.servocity.com/whippersnapper

https://youtu.be/OVHW_4q0uF4

Bogie Runt Rover

Dimension: 10.7 x 9.9 x 5.9 inches
Voltage: 4.5VDC
No Load Speed: 140RPM
No Load Current: 190mA
Max. Load Current: 250mA
Torque: 800 gf-cm

The Bogie kit is designed with an awesome Rocker-Bogie suspension making it great for climbing over tough obstacles. With nearly 5” of ground clearance and 5” of flex this little bot is so much fun to drive! Powerful gearmotors driving six high-traction rubber tires gives the Bogie amazing climbing capabilities.

https://www.servocity.com/bogie

https://youtu.be/6OTzuVd0oks

https://youtu.be/StILxkhWlUw

Half-Pint Runt Rover

Dimension: 7.4 x 7.7 x 4.8 inches
Voltage: 4.5VDC
No Load Speed: 140RPM
No Load Current: 190mA
Max. Load Current: 250mA
Torque: 800 gf-cm

The Half-Pint boasts a huge storage chassis that provides ample space for batteries, electronics and other components. The kit is mostly snap-together, only requiring a Phillips Head Screwdriver for assembly!

https://www.servocity.com/half-pint

https://youtu.be/g42vAEsAzXQ

WORK IN PROGRESS ——

PWM motor controller for Bogie Runt Rover

https://www.robotshop.com/community/forum/t/best-pwm-motor-controller-for-the-bogie-runt-rover/56000

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RESEARCH: Dagu Wild Thumper 6WD All Terrain Rover

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Chassis Kit:

The kit includes the chassis and wheels & motors (with 2 choices of gears), so you will need to provide the electronics and sensors to meet your needs.

Description:

The most rugged and beefy robot chassis in its price range. The Wild Thumper 6-Wheel platform is the best of both worlds: It takes almost no time to go from un-boxing to rolling chassis, but it's also ready to be expanded on and makes great base stock for a serious 'bot.
Each of the six motors are mounted on independent suspension and outfitted with 34:1 (or 75:1) steel gearboxes (no more stripped gears!). The motors are wired together on a terminal strip inside the 2mm thick anodized metal frame and can be controlled on two channels (left and right). The entire chassis is perforated with 10mm pitched, 4mm diameter mounting holes and there is plenty of room interior to the chassis for batteries, drivers and other support hardware. The chassis comes with 6 of those gnarly Dagu 120mm off-road wheels.
Because there are six motors total, each channel of your motor driver will need to be able to supply a decent amount of current to get things moving. This is a differential drive platform, meaning that a turn in accomplished by simply driving one side faster or slower than the other, or turning the two sides in opposite directions. Because the "pivot point" of this turn is essentially made up of the opposing three tires a gradual turn will require less power than a sharp one and the more power you can source, the more maneuverable your platform will be.
Made from 2mm thick anodized aluminum plate with stainless steel and nickel plated brass fittings. It is provided with 6 powerful steel geared motors, spiked tractor tyres and a "Super Twist" suspension system to keep all wheels on the ground. This chassis will let your robot go almost anywhere. Each unit comes pre-assembled in a colour printed box. Wheels only need to be fitted with supplied allen key. A simple printed manual is included.

Specifications: