SparkFun
SparkFun
SparkFun – Piezo Speaker – PC Mount 12mm 2.048kHz
SparkFun: COM-07950
Description: This is a small 12mm round speaker that operates around the audible 2kHz range. You can use these speakers to create simple music or user interfaces.
Each speaker is PTH solderable and requires an operating voltage of 3.5-5V with a mean current of 35mA max. These speakers also have a typical sound output of 95 dBA and a coil resistance of 42 ±6.3 ohms. Many people call this a buzzer but it is not. The piezo element requires a square wave (common from most microcontrollers) to produce a tone.
Don Luc
SparkFun – One Wire Digital Temperature Sensor – DS18B20
SparkFun: SEN-00245
Description: This is the latest DS18B20 1-Wire digital temperature sensor from Maxim IC. Reports degrees C with 9 to 12-bit precision, -55C to 125C (+/-0.5C). Each sensor has a unique 64-Bit Serial number etched into it – allows for a huge number of sensors to be used on one data bus. This is a wonderful part that is the corner stone of many data-logging and temperature control projects.
Features:
- Unique 1-Wire® interface requires only one port pin for communication
- Each device has a unique 64-bit serial code stored in an onboard ROM
- Multidrop capability simplifies distributed temperature sensing applications
- Requires no external components
- Can be powered from data line. Power supply range is 3.0V to 5.5V
- Measures temperatures from -55°C to +125°C (-67°F to +257°F)
- ±0.5°C accuracy from -10°C to +85°C
- Thermometer resolution is user-selectable from 9 to 12 bits
- Converts temperature to 12-bit digital word in 750ms (max.)
- User-definable nonvolatile (NV) alarm settings
- Alarm search command identifies and addresses devices whose temperature is outside of programmed limits (temperature alarm condition)
- Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermally sensitive system
Don Luc
SparkFun – Mini Photocell
SparkFun: SEN-09088
Description: This is a very small light sensor. A photocell changes (also called a photodetector, photo resistor, CdS or photoconductive cell) resistance depending on the amount of light it is exposed to. These little sensors make great ambient light triggers (when light in the room turns on, do something).
Features:
- Light resistance: ~1k Ohm
- Dark resistance: ~10k Ohm
- Max voltage: 150V
- Max power: 100mW
Dimensions:
- 2 x 4 x 5mm
- 4mm between pins
- 31mm lead length
Don Luc
SparkFun – Capacitor Ceramic 0.1uF
SparkFun: COM-08375
Description: This is a very common 0.1uF capacitor. Used on all sorts of applications to decouple ICs from power supplies. 0.1″ spaced leads make this a perfect candidate for breadboarding and perf boarding. Rated at 50V.
Don Luc
SparkFun – Infrared Emitters and Detectors
SparkFun: SEN-00241
Description: Side-looking Infrared Emitters and IR Detectors. These simple devices operate at 940nm and work well for generic IR systems including remote control and touch-less object sensing. Using a simple ADC on any microcontroller will allow variable readings to be collected from the detector. The emitter is driven up to 50mA with a current limiting resistor as with any LED device. The detect is a NPN transistor that is biased by incoming IR light.
Don Luc
SparkFun – Small Stepper Motor
SparkFun: ROB-10551
Description: These small steppers are a great way to get things moving, especially when positioning and repeatability is a concern.
When using a current limiting driver such as the Easydriver or Big Easydriver, a 12 volt power supply can be used as long as you adjust the current level to 400mA or less. If using a non current limited driver (like a L293D or an H-bridge) you will need to lower your input voltage to keep the motor current below 400mA.
This is a Bipolar motor.
Features:
- Stride Angle (degrees): 7.5
- 2-Phase
- Rated Voltage: 12V
- Rated Current: 400mA
- 3mm Diameter Drive Shaft
- 4-Wire Cable Attached
- In-traction Torque: 100 g/cm
Don Luc
SparkFun – Voltage Regulator – 3.3V
SparkFun: COM-00526
Description: This is the basic LD33V voltage regulator, a low drop positive regulator with a 3.3V fixed output voltage. This fixed regulator provides a great amount of stability and protection for your project and with its on ship trimming this regulator is able to reach an output voltage tolerance within ±1%. Each one of these voltage regulators can output a max current of 800mA.
Features:
- Output Voltage: 3.3V
- Output Current: 800mA
- Dropout Voltage: 1V
- Internal Current and Thermal Limit
Don Luc
SparkFun – Voltage Regulator – 5V
SparkFun: COM-00107
Description: This is the basic L7805 voltage regulator, a three-terminal positive regulator with a 5V fixed output voltage. This fixed regulator provides a local regulation, internal current limiting, thermal shut-down control, and safe area protection for your project. Each one of these voltage regulators can output a max current of 1.5A.
Features:
- Output Voltage: 5V
- Output Current: 1.5A
- Thermal Overload Protection
- Short Circuit Protection
- Output Transition SOA Protection
Don Luc
SparkFun – Voltage Regulator – Adjustable
SparkFun: COM-00527
Description: This is the LM317TG voltage regulator, a three-terminal positive regulator with a 1.2V to 37V adjustable output voltage. This adjustable regulator provides a local regulation, internal current limiting, thermal shut-down control, and safe area protection for your project. Did we mention that this guy is easy to use? It only requires two external resistors to set the output voltage. Each one of these voltage regulators can output a max current of 1.5A.
Features:
- Output Voltage: 1.2V – 37V Adjustable
- Output Current: 1.5A
- Thermal Overload Protection
- Short Circuit Protection
- Output Transistor Safe
- Floating Operation for High Voltage Applications
Don Luc
SparkFun – Electrolytic Decoupling Capacitors – 100uF/25V
SparkFun: COM-00096
Description: Electrolytic decoupling capacitors 100uF/25V. These capacitors are great transient/surge suppressors. Attach one between the power and ground of your project to ensure smooth power delivery. High quality radial electrolytic capacitors.
Don Luc