WEBVTT

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Now build a different robot from zero Trailblazer a two wheel rover

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with a passive front caster The workbench starts with no components and

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no wires We add the mechanism power system and controller individually then

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show every connection and the working drive program No assembled preset is

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loaded

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Search Components for Rover chassis and add it Raise its center to

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sixty five millimetres using Position Y entered as zero point zero six

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five metres This leaves clearance for the drive wheels and passive caster

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Choose On Rover chassis so the following parts can be physically mounted

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Add two geared DC motors and name them Left drive motor and

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Right drive motor Place them on opposite sides of the chassis and

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rotate their long axes across the robot Add two ninety millimetre rubber

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wheels with their centers forty five millimetres above the ground Set each

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physical parent to the chassis electrical wiring comes later

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Add a ball caster near the front to complete the support arrangement

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Add the two cell battery and five volt buck regulator separately then

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arrange them on the chassis using Inspector Every component contributes mass A

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rover that looks assembled still needs a valid power circuit and correctly

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connected motor channels before it can drive

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Add an ESP32 ESP32 ESP32 S3 S3 virtual controller and a dual

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H bridge The controller sends low power direction and PWM commands the

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driver supplies motor power from the battery Fit the assembly then open

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Wiring Hide the side panels if you want more diagram space All

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six electrical devices appear automatically

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In List view connect battery positive and ground to the regulator Connect

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the regulator output and common ground to the ESP32 ESP32 ESP32 Connect

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battery positive to the H bridge motor supply and connect driver ground

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to the same common ground These six wires keep the logic supply

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regulated while the driver uses the battery rail

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Connect ESP32 ESP32 ESP32 PWM left to driver PWM A and PWM

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right to PWM B Connect A plus and A minus to the

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left motor terminals Connect B plus and B minus to the right

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motor All twelve connections are now present Return to Canvas and arrange

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the diagram to review the complete circuit and its validation status

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Write a step function with a twelve second repeating sequence Both motors

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at positive PWM drive forward Opposite commands turn the rover Both negative

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commands reverse it followed by a brief stop A brownout or low

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battery check commands zero Log each mode transition This is a timing

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demonstration not autonomous obstacle avoidance this robot has no range sensor

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Return to Assembly fit the robot and press Run The wheels develop

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traction through ground contact and the battery solver includes the motor load

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Watch the rover drive turn and reverse while the view follows it

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This run uses the exact ten components and twelve wires that were

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added during the recording rather than a substitute preset

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Pause and export a robot JSON backup The saved project contains the

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completed mechanism supply circuit motor channels and controller Use the Open project

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button below to inspect this exact build or download the file before

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experimenting For obstacle avoidance add and wire a supported range sensor then

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extend the controller using the documentation