When HN users recommended it
1 HN user recommended this in 2016, in one comment.
20072026
Each tall tick is one HN user's first recommendation. A short tick is the same user again. Click a tick to jump to the comment.
Elegoo Four wheel Ultrasonic Intelligent Educational
Amazon's catalog no longer lists this product (checked 2026-11-02). The name comes from the link HN users posted.
I got this Arduino bot for $70. Has its own battery for sufficient power. The motor gearing is a bit fast, so it's better to use PWM to slow down the motors, except the default pinout disables PWM on the drive gpios when the servo is enabled. The build quality is ok, except there are no spacers for the bolts between the PCBs and acrylic base, so I worry about damaging the PCB during assembly.
https://www.amazon.com/Elegoo-Four-wheel-Ultrasonic-Intellig...