i think i saw same here.
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Ultrasonic Radar
— Ultrasonic on a servo sweeps 180°; radar shows distances and obstacles, integrates with movement panels for automatic avoidance, scriptable GetPing
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Of course you did... it's a dagu robot and it's a dime o' dozen... They are everywhere....
rr
there was a discount.60 '% off
That's a cute robot. I have one somewhere. Never got around to building it - but it looks like it could be fun with an ezb instead of the arduino fake controller. I would give you a warning that those plastic micro servos are very very sensitive and break easily.
this should help https://www.ebay.co.uk/itm/4pcs-EMAX-ES08MA-12g-micro-Metal-Gear-Servo-for-trex-450-rc-helicopter-S-/391164208090?pt=LH_DefaultDomain_3&hash=item5b133423da they are micro metal gear servos and they are not that expensive, i use them and i haven't had to change them out i recommend them