Nice little pulley unit kit includes (1) pulley each at 50, 30, 25 and 20mm and (3) pulleys at 11mm, plus myriad bushings, a 3VDC motor, (2) belts and a belt guide, base, mounts and assorted hardware. Includes graphic assembly instructions, plus a couple of rudimentary drawings with suggested projects. It's a mechanical science project waiting for a home.

It will if you buy this unused take-out sound device and speaker. Includes a printed circuit board and a 2” 1/4W speaker mounted inside a 2-1/4” square x 1-1/16” gray plastic box. Includes a (3) “AA” battery box (empty) and power switch on one pair of leads, and a photocell in a brass tube on another because it’s motion sensitive. The sound is officially a dinosaur growl, although some folks here maintain it is quite distinctly a dino belch. A dyspeptic dinosaur is an angry dinosaur, we always say, so it’s a fine line. Check out our Facebook post to hear it in action.

You get a 10ml syringe of white silicone heat sink compound for use as a thermal coupling for electronics. High conductivity, low bleed and stable at high temperatures. Perfect for you electronic tinkerers out there with a sinking feeling.

This 5-pin socket is already wired with 9" leads in black, red, white, yellow and blue to its quick-disconnect sockets, ready for your 1/4" or 7mm spade terminals. Measures 1-1/4" x 1-1/16" x 1" thick. Matches our 94746 relay.

And save a bundle. The "Kill-A-Watt" plugs into a wall outlet and accepts the power line for any devices or appliances that draw up to 1875 watts. Identifies energy eaters, tracks efficiency and costs over time, and checks on your electricity provider by monitoring voltage, current (amps), watts, kilowatt hours, frequency (Hz), volt amps, power factor, and elapsed time. Measures 5-1/8" x 2-3/8" x 1-7/16" with a 1-3/4" x 11/16" LCD screen. You may never use a waffle iron again.

When you could just order this 480-pack of 1/4 watt, 5%-tolerance resistors. You'll get (30) pieces each of 10, 22, 47, 100, 220, 470, 1K, 2.2K, 4.7K, 10K, 22K, 47K, 100K, 220K, 470K, and 1M OHM.

We’re just guessing, but we’re pretty sure you don’t own a USB charging-cable-keychain-bottle opener combo. Until now. Measures 3-5/8" x 1-3/8" x 3/8" with the opener at one end. Pull up on the center and reveal a 7” long charger/data cord with USB and micro-USB plugs at either end. A light-duty carabiner makes it a keychain. (Watch for the next generation of this item, possibly with an added espresso maker.)

The correct answer is "I don't know; I've never toggled." If, however, you just want to turn something on and off, here's a choice of toggles for your switching delectation. The DPDT toggle is rated for up to 20A at 125VAC and has screw terminals below. Measures 1-1/4" x 1-3/4". No center-off position. The first DPST toggle is rated for 20A at 125VAC or 15A at 250VAC. Screw terminals on the bottom. Measures 1-5/16" x 3/4". The smaller DPST toggle is rated for up to 4A at 125VAC or 2A at 250VAC. Has 3/16" spade terminals on the bottom and measures 1" X 9/16". All the toggles come with switch-plates and mounting nuts.

Break free of cables with this passive RCA HDTV antenna that’s so thin it virtually disappears. Made to receive free HD/VHF/UHF signals, the antenna is a pair of extremely thin black plastic wings, each 14” long x 3” tapering to 3/8”. Overall, it’s 29” long x approx nothing deep. The center connector has a 50” length of thin COAX cable with an “F” connector to mate with the TV input. Marked refurbished, but you can’t tell them from new. A little assembly is required.

Here's a brand new selection of sealed lead-acid rechargeable batteries, for when you're pushing something a little bigger than a penlight. All batteries are all direct from the manufacturer with current date codes. All of them have (2) 3/16" wide quick-disconnect terminals on top. Click on battery description for a photo.

You pick the 500-Ohm 1/2W, 1K-Ohm 1/2W or the 10K-Ohm panel-mount potentiometer, all from Alpha Products® with dust covers over a 17mm base, panel tabs, 6mm dia x 10mm long shafts, and 3mm solder lugs with washers and nuts. Shafts are knurled and slotted, and single-turn. Turn them with press-fit black plastic knobs, 6mm ID x 16mm dia x 18mm tall with pointers in assorted colors of red, orange, yellow, blue, green and white.

Pardon us--just a little machinists’ joke. This sturdy cast-iron pillow block measures 5" x 2-3/8" tall x 1-3/8". Has a sealed 1-3/4" dia bearing with a 3/4" ID x 1-7/32" bushing and a pair of set screws. Mounts via 7/16" x 13/16" x 1/2" slots in the base. Has a 1/4” lube fitting with a cover. Get a couple and add a 3/4” dia steel rod, and you’ve got the toughest towel bar in the universe.

Little takeout 3-6VDC Mabuchi motors (6VDC nominal) spin approx 4000 rpm and draw 50mA no load. Stall at 300mA and measure 1-1/2" long x 1-1/16" dia with a 1/2” long x 3/32” dia shaft with a 2-sheave 9/16” dia pulley. Sheaves are 1/16” ID. Wired with 2” leads for super easy battery or wall adapter hook up. These were originally from copiers so you'll want to wipe 'em down before use.

This 3-phase brushless 12VDC motor from Nidec draws 2.5A max through the red and black leads with what we think are coil taps, and Hall effect outputs through the other (4) leads. Measures 36mm (1.4") dia x 40mm (1.6") long with a 4mm (0.16") dia x 19mm (0.75") shaft with a removable cam. Includes a spec sheet.

Like a third hand in the electronics lab, this circuit-board rack from Elenco® has a pair of stable 6-1/2" legs and 3" tall arms with clips, one spring-loaded, to hold the board. It's a must for any electronics DIY-er. Adjusts from 0 to 9-3/8" apart and lets you rotate the board it holds a full 360 degrees. Both clips and legs lock with thumbscrews.

Great for roboticists, too. It's a mighty-mite, this little 6VDC 45 RPM motor with a right-angle gearbox. Draws 13mA, no load, and stalls at 120mA. Output is through (2) double-flattened 1/4" dia x 3/16" long shafts on opposite sides of the white plastic housing, both with 1/16" dia center holes. Measures 1-7/8" x 7/8" overall. Gear ratio is 228:1.

These neoprene sleeves are for laptops, tablets, gaming devices and more! Measuring approx. 13” x 9-1/2” x 3/4” (Small) or 16" x 12" x 3/4" (Large) with a zipper across the top half. We’ll pick from a selection of designs in red, blue or black, some with skateboarder-ish “No Fear” images on one side or you may even get the British Union Jack!

We have discovered a great source for inexpensive IC chips in all your favorite flavors. Please check the list above and make your selection today! Click on each item for a general Spec. sheet or contact us for a full Spec. sheet. INFO@SCIPLUS.COM or 888-724-7587