WALKING ROBOTS / BIPED

StridePlan your first two-legged assembly.

Stride combines a torso, broad support feet and four servo positions in a biped layout. Use its in-place motion preview to study how the pieces relate, and build familiarity with independently controlled joints.

Build with Stride Explore the design

Includes assembly, starter wiring and executable virtual JavaScript.

ASSEMBLY PREVIEW/WALKER

Stride · Biped concept illustration; the 3D preview uses the actual preset geometry

Static illustration · loading 3D

Orbit the actual starter assembly. Open the workbench to edit or run it.

15components

20starter connections

0.82 kgestimated component mass

ESP32 DevKitcontrol platform

Stride · Biped, an illustrated walking robots assembly

Concept illustration · inspect actual geometry above.

A COMPLETE STARTING POINT

Get to know
what's inside.

Two legs and broad feet for support, assembly and wiring studies. All 15 components and 20 starter connections remain editable in your own project.

Biped layout explorationJoint naming and groupingServo wiring practice

View the included component types

Biped torso
Position servo
Upper leg
Lower leg
Support foot
Emoji OLED display
2S battery · 2.2 Ah
5 V buck regulator
ESP32 DevKit · virtual controller

YOUR FIRST THREE EXPERIMENTS

Build understanding.
One change at a time.

Use the starting assembly to ask better questions about your design. Save a copy, change a parameter and compare what happens.

Inspect the design

Inspect the two leg chains and the torso-mounted display.

Try a change

Run the four-joint in-place cycle and change its phase or amplitude.

Compare and learn

Compare the broad support feet and reference assembly while planning a physical prototype.

walker-biped.jsVIRTUAL API

const legs = ["front-left","front-right"];
function step(robot) {
  robot.drive(0, 0);
  if (robot.brownout || robot.battery.voltage < 6.25) { robot.display('🪫'); return; }
  legs.forEach((leg, i) => {
    const phase = robot.time * 2 + i * Math.PI;
    robot.servo('leg-' + leg + '-hip', 0.14 * Math.sin(phase));
    robot.servo('leg-' + leg + '-knee', 0.10 * (1 - Math.cos(phase)));
  });
  robot.display('😊');
}

The full, editable starter script is included in the workbench.

KNOW WHAT YOU'RE TESTING