Electromechanical

US$39.12
Move fluid safely from here to there with this very nice little pump. Unlike most liquid pumps, this is a peristaltic type - the pump squishes the silicone tubing that contains the liquid instead of impelling it directly. The upshot? The pump never touches the fluid which makes this an excellent choice for any food/drink/sterile based pumping such as for making drink-bots or gardening robots! 
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US$5.36
Voltage Range: 6V-12V. Nominal Voltage: 12V. Current: 0.14A. RPM: 12,500 max. Torque: 44.2g/cm. Terminal Type: Solder. Shaft Dia.: 2mm. Shaft Length: 10mm. Size: 24mm dia. x 32mm length.
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US$20.93
Pan and Tilt assembly for horizontal surface mount. Made using two DFRobot servo brackets. Perfect for your small remote piloted robot! Includes hardware. It supports: Hitec 422, Hitec 311, DF05BB, DF15MG, DF13MG.
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US$11.13
High quality black anodized aluminum multi-purpose standard servo bracket. It is suitable to make Pan/Tilt and multi-axis joints for use in robot arms and legs.
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US$8.33
This is our URM ultrasonic sensor mounting bracket.  It fits URMV3.2 and URM04. 
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US$3.07
Standard Size Screw Terminal Toggle Switch. DPDT. On-On. 6 Pins. 20A, 125V.
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US$2.96
Standard Size Screw Terminal Toggle Switch. SPDT. On-On. 3 Pins. 10A, 125V.
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US$51.73
An Ultrasonic sensor with scan capability is a must have feature for most robot application. This Ultrasonic scanner kit provides a cost effective way to have such feature for your robot application. This kit is able to scan upto 120 degree area with 10-400 cm detecting range. 
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US$26.25
This is a completely new design which is capable of controlling 4 relays at a time. The max switching power DC 90W or AC 360VA gives direct control by Arduino/DFRduino controllers through digital I/Os with external 9V supply. With built-in Xbee socket, it can be wireless remote controlled via Xbee/bluetooth/WPM.
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US$24.27
This is a standard-sized servo that has been built by SpringRC specifically for continuous rotation, making it an easy way to get your robot moving.
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US$5.59
Size 2" 0.2W, freq, resp. 550+/-60, freq. range 4000Hz, sensivity 92db, magnet wt. 0.5oz.
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US$5.59
Size 2 1/2" 0.3W, freq, resp. 300+/-50, freq. range 4000Hz, sensivity 93db, magnet wt. 0.5oz.
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US$5.45
Size 1 1/2" 0.1W, freq, resp. 750+/-60, freq. range 7000Hz, sensivity 89db, magnet wt. 0.5oz.
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US$9.79

Specifications: 2-1/8" dial plate finished in matte silver and black is supplied. Mounts in 3/8" panel hole. 1" long threaded bushing complete with mounting nuts. Includes black plastic knob. 15 watts RMS at 8 ohms.

Delivery within 2-3 weeks
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US$12.17
Control the flow of fluid using the flow of electrons! This liquid valve would make a great addition to your robotic gardening project. There are two 1/2" (Nominal NPS) outlets.
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