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Description:

MS Anemometer as used in the Raspberry Pi foundation weather station project to measure windspeed.
Hack this component to form part of your weather station.

Specifications:

Sensor	3-cup anemometer
Measurement Description	Wind speed
Range	0 to 45 m/s (0 to 100 mph)
Starting Threshold	0.45 m/s (1.0 mph)
Accuracy	0.11 m/s (0.25 mph) or 1.5%
Contact Rating	10 mA (maximum)
Operating Temperature Range	-50° to 70°C
Distance Constant	< 4.5 m (15 ft) standard < 1.5 m (5 ft) optional fast response
Cable Description	Quick-connect connector with vinyl jacketed, shielded cable

What's in the box?:

1 x Anemometer

Resources:

View the project details here
And some more help here
Article specific to the anemometer only

It only can be used with AC220V±10% 50/60Hz, not110V.

Here are the links of  the CE Certification and the Environmental Certification:

CE Certification: 
https://www.dropbox.com/s/x937yu696g449o2/CE Certification .pdf?dl=0

Environmental Certification: 
https://www.dropbox.com/s/38ncgzktlsxlhvw/Environmental Certification .pdf?dl=0

Description:

If your project is not aiming to be the most heavy duty CNC machine out there, but is meant to be easy and inexpensive to build so that anyone can get a hand on a precise CNC, machining in many materials including metal. Then this is the perfect starting point for you.

Specifications:


Brand: Machifit

Description:
 
Uses improved groove optical coupling sensor, width 5mm. Has an output state light, if output level is high, the lights are off. If output is low,light is on. If the sensor is covered, it will output a high level.

Feature:
 
Uses improved groove optical coupling sensor, width 5mm.
It has an output state light, if output level is high, the lights are off. If output is low,light is on.
If sensor is covered,it will output a high level.
Working voltage of 3.3V to 5V.
Output: digital switch output (0 and 1).
Equipped with a fixed bolt hole, easily install.
Small board PCB size: 32 mm x 14 mm.
Use the LM393 wide voltage comparer.
 
Wiring specifications:

VCC Connect positive 3.3 to 5V power supply
GND Connect power negative
DO TTL switch signal output
AO Not used

Package includes:

1 x Speed Measuring Sensor Module

Please Note: Some drilling will be required. You might need to add a few standoffs and screws to build it the way you want it.
Description:

This complete robot car kit includes the arduino as well. Just add batteries and code. Great for beginners to learn how to code using sensors and motion on the Arduino boards

Pdf manual available at http://www.cs.columbia.edu/~sedwards/presentations/robot-car-instructions.pdf 
Get more details at https://create.arduino.cc/projecthub/hda-robotics/project-1-2wd-obstacle-avoiding-robot-390ef8

Description:

Compatible with USB 2.0, it provides full isolation at 12 Mbps data rates. With isolation of 2500V, it has no external power supply, no driver required.

Description:

As its name suggests, pulse width modulation speed control works by driving the motor with a series of “ON-OFF” pulses and varying the duty cycle, the fraction of time that the output voltage is “ON” compared to when it is “OFF”, of the pulses while keeping the frequency constant.


Features:

Power requirement: 9-50V
DC Rated current:  40A (Maximum output current)
Frequency:  12000HZ
Control Motor Power:  0.01-2000W
Working voltage 12V:  480W (max)
Working voltage 24V:  960W (max)
Working voltage 36V:  1440W (max)
Working voltage 50V:  2000W (max)
Regulation range: 5-100%
PCB Size: Approx. 9 x 5.1cm / 3.55 x 2.01 inch
Case size: Approx. 10.5 x 5.5 x 4cm / 4.0 x 2.17 x 1.6 inch

Package included:

1 x DC Motor speed controller