Zivko the Robot is back in stock! Our best selling STEM kit ever! Just call her (or him--it’s unclear and we don’t like to ask) “Zivko” because “the Robot” is her last name. Using just a screwdriver and side cutters, you build Zivko from this 107-piece S.T.E.M. kit. Set the mode for “Follow Me” or “Explore,” and Zivko will, yes, track you, or evade obstacles, respectively, via an infrared sensor and micro-controller programming. Interactive LEDs and sounds abound. Measures approx 5" x 5-1/2" x 6-1/2" when assembled with all (6) legs. You add (4) “AAA”s for power, which is the least you can do for someone this cute. Ages 10+.

Everything you need to build a little DC motor is included in this kit (except sandpaper, screwdriver, scissors and, of course, an AA battery). The instructions are simple and explain the theory as well as assembly. Fun and educational for ages 12 and up.

Electronics fans, musicians and budding Sci-Fi sound engineers will love this little starter electronics kit for making a mini version of a theremin, the venerable capacitance-based instrument that’s synonymous with eerie sounds. This one skips the volume antenna, but has a quantization mode as well as a continuous swoop via the pitch antenna. You add a 9V battery and some minimal soldering skills. Includes all parts, including IC sockets. Measures 2” square, and includes excellent instructions. You might want to get a little project box for it. Made in the USA for Madlab/Velleman.Ages 10+.

Cool kit to introduce the beginner (age 10+) to the fabulous world of electronics. You will learn the basics of putting together circuits through over 50 projects building actual devices like an alarm, a radio, a metal detector and much more. The simple but complete instructions explain voltage, current resistance etc. This kit from Elenco is a giant "breadboard" with wires that can be connected to form the circuits as explained in the instructions…and all without soldering! A fabulous educational item at a fabulous surplus price!! For ages 10+.

Another Snap Circuits kit from Elenco®, and another chance to let the next generation have some fun while learning about electricity. The LED Fun Kit comes with white, red, blue and oscillating red/green/blue LEDs, plus a slide pot, SPST slide switch, load resistor, fiber-optic bundle, battery holder and a mounting plate. Has instructions for (11) projects and is compatible with all other Snap Circuit kits. You buy the (4) "AA" batteries and let the LED madness begin.

Bells, whistles, sirens, rain and metal detectors, amps, timers! Instructions on how to build the circuits for a burglar alarm, light dimmer, tone-mixing amplifier, logic tester and a whole bunch more. The Elenco® Electronic Playground 130 & Learning Center" by Elenco® has 130 projects using a control center with a built-in breadboard with contact springs. The perfect intro to electronics for ages 12 and way up, it includes a 164-page instruction book and all the parts you need except (6) "AA" batteries. No experience necessary. Build these exciting kits also! Electronic siren, LED strobe light, light dimmer, sound amp, winking LEDs, sound machine, pencil lead organ, tone mixing amp, burglar alarm, first-aid siren, voice-activated LED, logic tester, sound alarm circuit, voice level meter, delayed timer, AM Radio station, crystal radio, metal detector, water level alarm and many more! 

It doesn't get much cooler in the robotic-arm-kit game. The assembled STEM educational arm is 15" tall x 9" long x approx 3-1/2" wide. It's 2-pronged hand opens to 1-3/4", lifts up to 3.5 oz (100g), swings 120 degrees at the wrist, pivots 300 degrees at the elbow, and sits on a base that swings 180 degrees up and down and rotates 270 degrees, like, well, an arm. Controlled by (5) 2-axis joy-sticks and powered by (4) D-Cell batteries that you provide. Includes a hand-mounted search light and over-torque and gear-breakage alarms, which is more than your arm has. Requires a diagonal cutter and Philips screwdriver for assembly of its 200+ pieces and is made for ages 12 and up.

An advanced kit compared to the others, a little more deluxe and a little more complicated. It is an AM/FM radio kit from Elenco with over 80 pieces divided into lesson groups. PC board shows component placement to help learning and to minimize errors. It has (14) transistors and (4) diodes and measures appx. 11"x 5". Ages 12+, as considerable soldering is required.

Just what you’re looking for... a nice, analog multimeter kit from Elenco®. The M-1250-K model has 29 ranges, and measures AC/DC Volts, DC current, Ohms, diodes, decibels and transistors. Kit has (36) pieces, and the case is pretty much intact. Has 20,000N/V23 ranges, a 3-1/2" meter-mirrored scale, audible continuity checks, transistors/diodes, safety input sockets and a test lead.

Someday all robots will be powered by the sun, and they won’t have people to get in their way. Until then, we’re still in charge. Show them who’s boss by building one of them. This (190)-piece Solar Robot Creation Kit lets you assemble (12) different kinds of bot configurations that walk, roll, crawl, row or otherwise locomote using the power of the sun, which they will one day harness in-full. Includes a solar panel, motor, gears, (100+) plastic body pieces, a nail file for cleanup, and illustrated instructions. Ages 8+. ! WARNING: CHOKING HAZARD–Small Parts. Not for children under 3 yrs