Observed arrival · 2026-10-01
RoboStack R250: a robot arm to build and program
A hands-on robotics kit pairs a four-axis gripper arm with Arduino-based controls and learning materials that progress from visual blocks to code.
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$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Teachers and students learning hands-on robotics
- Worth noticing
- Published specifications pair a 246 mm reach with a 20 g gripper payload; the arm weighs 415 g.
Field notes
The listed box contents include an Arduino Nano, an expansion board, three MG996R servos, two MG90S servos, tools, and a 5 V / 2 A power supply. The software section describes manual sliders, saved motion sequences, Blockly, and code-based control; linked learning materials include a detailed assembly guide and a ten-part software guide. The page describes its course as moving from mechanics and kinematics toward debugging a learner's own program.
Observed signals
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○OpenPublic substance visible
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
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