Components + IC's + PCB's

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TL431 - Voltage Reference
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Price: $0.87
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Sparkfun Item #: COM-11078 -

"The TL431 is a three−terminal programmable shunt regulator diode. This monolithic IC voltage reference operates as a low temperature coefficient zener which is programmable from Vref to 36V with two external resistors. They exhibit a wide operating current range of 1.0mA to 100mA with a typical dynamic impedance of 0.22 ohms. The characteristics of these references make them excellent replacements for zener diodes in many applications such as digital voltmeters, power supplies, and...

Toggle Switch
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Price: $3.39
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Sparkfun Item #: COM-09276 -

"This is a heavy duty SPST toggle switch - your basic on/off toggle. Rated for 2A at 250V or 4A at 125V. Includes a face plate and two threaded nuts for mounting. Works great with our missile switch cover. Dimensions: 0.5 x 0.55 x 1.45" Documents: Dimensional Drawing "

Toggle Switch and Cover - Illuminated (Red)
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Price: $5.13
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Sparkfun Item #: COM-11310 -

"This simple on-off switch is rated for 20A at 12V but who cares about all that, it looks way awesome. These toggle switches come with those missile switch covers that make your project look like something out of a spy movie. They’re also a great safety feature to ensure that you don’t accidentally fire the missiles (or whatever it is your switch does). As if you needed any more convincing, they’re also illuminated with a small LED in the end of the switch. These can be panel...

Transceiver nRF2401A Module Trace Antenna
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Price: $23.96
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Sparkfun Item #: WRL-00153 -

Transceiver nRF2401A Module Trace AntennaDescription: Miniature RF (MiRF) 2.4GHz transceiver modules with built in antenna designed around the Nordic Semiconductor nRF2401A with high sensitivity and good range. These units are a SparkFun exclusive; small in stature, big on performance, all wrapped up in a user friendly package. Units come with an empty 0.1" spaced footprint ready for a straight header, right angle header (recommended), or your own wires/umbilical cable.The...

Transistor - NPN (2N3904)
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Price: $0.87
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Sparkfun Item #: COM-00521 -

"These are very common, high quality BJT NPN transistors made by ST Micro. Datasheet: 2N3904"

Transistor - NPN (BC547)
Price: $0.87
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Sparkfun Item #: COM-08928 -

"These are high quality BJT NPN transistors that work well with audio applications, made by ST Micro. Datasheet: BC547"

Transistor - PNP (2N3906)
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Price: $0.87
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Sparkfun Item #: COM-00522 -

"These are very common, high quality BJT, PNP transistors made by ST Micro. Datasheet: 2N3906"

Transistor Array - ULN2803 (3 Pack)
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Price: $3.39
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Sparkfun Item #: COM-13885 -

"This simple Transistor Array pack contains three SMD ULN2803 ICs from Texas Instruments. Each of these tiny ICs consists of eight NPN Darlington pairs that feature high-voltage outputs with common-cathode clamp diodes for switching a board’s inductive loads with a collector current of 500mA. Each ULN2803 can absolutely be connected in parallel to achieve higher current capability. The ULN2803 chips in the Transistor Array are ideal when used in applications like relay drivers, hammer...

Trimpot 10K with Knob
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Price: $1.65
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Sparkfun Item #: COM-09806 -

"There are lots of trimpots out there. Some are very large, some so small they require a screwdriver. Here at SparkFun, we just needed a simple one that worked. This 10K trimmable potentiometer has a small knob built right in and it’s breadboard friendly to boot! Perfect for your next LCD contrast adjuster, opamp setting, or volume level. This model # is TSR-3386U within the datasheet. Documents: Datasheet (Note pins are in a single row, as shown in the pictures) " ...

Triple Axis Accelerometer - ADXL335
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Price: $17.30
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Sparkfun Item #: COM-09265 -

"The ADXL335 is a small, thin, low power, complete 3-axis MEMS accelerometer with signal conditioned voltage outputs. The product measures acceleration with a minimum full-scale range of ±3 g. It can measure the static acceleration of gravity in tilt-sensing applications, as well as dynamic acceleration resulting from motion, shock, or vibration. The user selects the bandwidth of the accelerometer using the CX, CY, and CZ capacitors at the XOUT, YOUT, and ZOUT pins. Bandwidths can be...

Triple Axis Accelerometer - ADXL345
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Price: $17.30
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Sparkfun Item #: SEN-09045 -

"The ADXL345 is a small, thin, low power, three-axis MEMS accelerometer with high resolution (13-bit) measurement up to ±16g. Digital output data is formatted as 16-bit twos complement and is accessible through either a SPI (3- or 4-wire) or I2C digital interface. The ADXL345 is well suited for mobile device applications. It measures the static acceleration of gravity in tilt-sensing applications, as well as dynamic acceleration resulting from motion or shock. Its high resolution...

Triple Axis Accelerometer - LIS331HH
Price: $17.30
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Sparkfun Item #: COM-09755 -

"The LIS331HH is an ultra low-power full-scale three axis linear MEMS accelerometer. It has a digital I2C/SPI serial interface which makes it ideal for using in embedded applications. The device also features ultra low-power operational modes that allow advanced power saving and smart sleep to wake-up functions. The LIS331HH has dynamically user selectable full scales of +-6g/+-12g/+-24g and is capable of measuring accelerations with output data rates from 0.5 Hz to 1kHz. The self-test...

Triple-Axis Digital-Output Gyroscope - ITG-3200
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Price: $17.30
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Sparkfun Item #: SEN-09793 -

"The ITG-3200 is the world’s first single-chip, digital-output, 3-axis MEMS motion processing gyro optimized for gaming, 3D mice, and motion-based remote control applications for Internet connected Digital TVs and Set Top Boxes. The ITG-3200 features three 16-bit analog-to-digital converters (ADCs) for digitizing the gyro outputs, a user-selectable internal low-pass filter bandwidth, and a Fast-Mode I²C (400kHz) interface. Additional features include an embedded temperature sensor...

Tube - Aluminum (1"OD x 14"L x 0.82"ID)
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Price: $9.37
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Sparkfun Item #: ROB-12375 -

"These 14" long aluminum tubes have an outer diameter of 1", an inner diameter of 0.82", and a wall thickness of 0.09". When used with the mating tube clamps, these can be used for versatile structural support. Additionally, wires and cables can easily be run through the center. Dimensions: Length - 14.0" OD - 1" ID - 0.82" Width - 0.09" "

Tube - Aluminum (1"OD x 16"L x 0.82"ID)
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Price: $11.63
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Sparkfun Item #: ROB-12356 -

"These 16" long aluminum tubes have an outer diameter of 1", an inner diameter of 0.82", and a wall thickness of 0.09". When used with the mating tube clamps, these can be used for versatile structural support. Additionally, wires and cables can easily be run through the center. Dimensions: Length - 16.0" OD - 1" ID - 0.82" Width - 0.09" "

Tube - Aluminum (1"OD x 18"L x 0.82"ID)
Price: $14.24
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Sparkfun Item #: ROB-12155 -

"These 18" long aluminum tubes have an outer diameter of 1", an inner diameter of 0.82", and a wall thickness of 0.09". When used with the mating tube clamps, these can be used for versatile structural support. Additionally, wires and cables can easily be run through the center. Dimensions: Length - 18.0" OD - 1" ID - 0.82" Width - 0.09" "

Tube - Aluminum (1"OD x 2.0"L x 0.82"ID)
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Price: $2.24
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Sparkfun Item #: ROB-12520 -

"These 2" long aluminum tubes have an outer diameter of 1", an inner diameter of 0.82", and a wall thickness of 0.09". When used with the mating tube clamps, these can be used for versatile structural support. Additionally, wires and cables can easily be run through the center. Dimensions: Length - 2.0" OD - 1" ID - 0.82" Width - 0.09" "

Tube - Aluminum (1"OD x 24"L x 0.82"ID)
Price: $19.98
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Sparkfun Item #: ROB-12173 -

"These 24" long aluminum tubes have an outer diameter of 1", an inner diameter of 0.82", and a wall thickness of 0.09". When used with the mating tube clamps, these can be used for versatile structural support. Additionally, wires and cables can easily be run through the center. Dimensions: Length - 24.0" OD - 1" ID - 0.82" Width - 0.09" "

Tube - Aluminum (1"OD x 4.0"L x 0.82"ID)
Price: $3.29
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Sparkfun Item #: ROB-12460 -

"These 4" long aluminum tubes have an outer diameter of 1", an inner diameter of 0.82", and a wall thickness of 0.09". When used with the mating tube clamps, these can be used for versatile structural support. Additionally, wires and cables can easily be run through the center. Dimensions: Length - 4.0" OD - 1" ID - 0.82" Width - 0.09" "

Tube - Aluminum (1"OD x 8.0"L x 0.82"ID)
Price: $5.20
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Sparkfun Item #: ROB-12294 -

"These 8" long aluminum tubes have an outer diameter of 1", an inner diameter of 0.82", and a wall thickness of 0.09". When used with the mating tube clamps, these can be used for versatile structural support. Additionally, wires and cables can easily be run through the center. Dimensions: Length - 8.0" OD - 1" ID - 0.82" Width - 0.09" "

Tube - Aluminum (1/2"OD x 12"L x 0.444"ID)
Price: $7.81
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Sparkfun Item #: ROB-12117 -

"These 12" long aluminum tubes have an outer diameter of ½", an inner diameter of 0.444", and a wall thickness of 0.03". When used with the mating tube clamps, these can be used for versatile structural support. Additionally, wires and cables can easily be run through the center. Dimensions: Length - 12.0" OD - ½" ID - 0.444" Width - 0.03" "

Tube - Aluminum (1/2"OD x 2.0"L x 0.444"ID)
Price: $2.59
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Sparkfun Item #: ROB-12113 -

"These 2" long aluminum tubes have an outer diameter of ½", an inner diameter of 0.444", and a wall thickness of 0.03". When used with the mating tube clamps, these can be used for versatile structural support. Additionally, wires and cables can easily be run through the center. Dimensions: Length - 2.0" OD - ½" ID - 0.444" Width - 0.03" "

Tube - Aluminum (3/8"OD x 10"L x 0.30"ID)
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Price: $5.90
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Sparkfun Item #: ROB-12215 -

"These 10" long aluminum tubes have an outer diameter of 3/8", an inner diameter of 0.30", and a wall thickness of 0.035". When used with the mating tube clamps, these can be used for versatile structural support. Additionally, wires and cables can easily be run through the center. Dimensions: Length - 10.0" OD - 3/8" ID - 0.30" Width - 0.035" "

Tube - Aluminum (3/8"OD x 12"L x 0.30"ID)
Price: $6.94
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Sparkfun Item #: ROB-12346 -

"These 12" long aluminum tubes have an outer diameter of 3/8", an inner diameter of 0.30", and a wall thickness of 0.035". When used with the mating tube clamps, these can be used for versatile structural support. Additionally, wires and cables can easily be run through the center. Dimensions: Length - 12.0" OD - 3/8" ID - 0.30" Width - 0.035" "

Tube - Aluminum (3/8"OD x 2.0"L x 0.30"ID)
Price: $1.72
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Sparkfun Item #: ROB-12279 -

"These 2" long aluminum tubes have an outer diameter of 3/8", an inner diameter of 0.30", and a wall thickness of 0.035". When used with the mating tube clamps, these can be used for versatile structural support. Additionally, wires and cables can easily be run through the center. Dimensions: Length - 2.0" OD - 3/8" ID - 0.30" Width - 0.035" "

Tube - Aluminum (3/8"OD x 6.0"L x 0.30"ID)
Price: $3.81
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Sparkfun Item #: ROB-12268 -

"These 6" long aluminum tubes have an outer diameter of 3/8", an inner diameter of 0.30", and a wall thickness of 0.035". When used with the mating tube clamps, these can be used for versatile structural support. Additionally, wires and cables can easily be run through the center. Dimensions: Length - 6.0" OD - 3/8" ID - 0.30" Width - 0.035" "

Tube - Aluminum (3/8"OD x 8.0"L x 0.30"ID)
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Price: $4.85
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Sparkfun Item #: ROB-12101 -

"These 8" long aluminum tubes have an outer diameter of 3/8", an inner diameter of 0.30", and a wall thickness of 0.035". When used with the mating tube clamps, these can be used for versatile structural support. Additionally, wires and cables can easily be run through the center. Dimensions: Length - 8.0" OD - 3/8" ID - 0.30" Width - 0.035" "

Tube - Stainless (1"OD x 10"L x 0.88"ID)
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Price: $17.72
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Sparkfun Item #: ROB-12217 -

"These 10" long stainless steel tubes have an outer diameter of 1", an inner diameter of 0.88", and a wall thickness of 0.06". When used with the mating tube clamps, these can be used for versatile structural support. Additionally, wires and cables can easily be run through the center. Dimensions: Length - 10.0" OD - 1" ID - 0.88" Width - 0.06" "

Tube - Stainless (1"OD x 12"L x 0.88"ID)
Price: $20.85
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Sparkfun Item #: ROB-12253 -

"These 12" long stainless steel tubes have an outer diameter of 1", an inner diameter of 0.88", and a wall thickness of 0.06". When used with the mating tube clamps, these can be used for versatile structural support. Additionally, wires and cables can easily be run through the center. Dimensions: Length - 12.0" OD - 1" ID - 0.88" Width - 0.06" "

Tube - Stainless (1"OD x 2.0"L x 0.88"ID)
Price: $4.50
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Sparkfun Item #: ROB-12208 -

"These 2" long stainless steel tubes have an outer diameter of 1", an inner diameter of 0.88", and a wall thickness of 0.06". When used with the mating tube clamps, these can be used for versatile structural support. Additionally, wires and cables can easily be run through the center. Dimensions: Length - 2.0" OD - 1" ID - 0.88" Width - 0.06" "

Tube - Stainless (1"OD x 6.0"L x 0.88"ID)
Price: $10.76
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Sparkfun Item #: ROB-12337 -

"These 6" long stainless steel tubes have an outer diameter of 1", an inner diameter of 0.88", and a wall thickness of 0.06". When used with the mating tube clamps, these can be used for versatile structural support. Additionally, wires and cables can easily be run through the center. Dimensions: Length - 6.0" OD - 1" ID - 0.88" Width - 0.06" "

Tube - Stainless (1"OD x 8.0"L x 0.88"ID)
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Price: $14.24
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Sparkfun Item #: ROB-12547 -

"These 8" long stainless steel tubes have an outer diameter of 1", an inner diameter of 0.88", and a wall thickness of 0.06". When used with the mating tube clamps, these can be used for versatile structural support. Additionally, wires and cables can easily be run through the center. Dimensions: Length - 8" OD - 1" ID - 0.88" Width - 0.06" "

Tubing - Aluminum (5/8"OD x 10"L x 0.569"ID)
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Price: $7.63
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Sparkfun Item #: ROB-12254 -

"These 10" long aluminum tubes have an outer diameter of 5/8", an inner diameter of 0.569", and a wall thickness of 0.028". When used with the mating tube clamps, these can be used for versatile structural support. Additionally, wires and cables can easily be run through the center. Dimensions: Length - 10.0" OD - 5/8" ID - 0.569" Width - 0.028" "

Tubing - Aluminum (5/8"OD x 2.0"L x 0.569"ID)
Price: $3.46
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Sparkfun Item #: ROB-12182 -

"These 2" long aluminum tubes have an outer diameter of 5/8", an inner diameter of 0.569", and a wall thickness of 0.028". When used with the mating tube clamps, these can be used for versatile structural support. Additionally, wires and cables can easily be run through the center. Dimensions: Length - 2.0" OD - 5/8" ID - 0.569" Width - 0.028" "

Tubing - Aluminum (5/8"OD x 4.0"L x 0.569"ID)
Price: $4.50
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Sparkfun Item #: ROB-12314 -

"These 4" long aluminum tubes have an outer diameter of 5/8", an inner diameter of 0.569", and a wall thickness of 0.028". When used with the mating tube clamps, these can be used for versatile structural support. Additionally, wires and cables can easily be run through the center. Dimensions: Length - 4.0" OD - 5/8" ID - 0.569" Width - 0.028" "

Tubing - Aluminum (5/8"OD x 6.0"L x 0.569"ID)
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Price: $5.55
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Sparkfun Item #: ROB-12236 -

"These 6" long aluminum tubes have an outer diameter of 5/8", an inner diameter of 0.569", and a wall thickness of 0.028". When used with the mating tube clamps, these can be used for versatile structural support. Additionally, wires and cables can easily be run through the center. Dimensions: Length - 6.0" OD - 5/8" ID - 0.569" Width - 0.028" "

Tubing - Aluminum (5/8"OD x 8.0"L x 0.569"ID)
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Price: $6.59
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Sparkfun Item #: ROB-12419 -

"These 8" long aluminum tubes have an outer diameter of 5/8", an inner diameter of 0.569", and a wall thickness of 0.028". When used with the mating tube clamps, these can be used for versatile structural support. Additionally, wires and cables can easily be run through the center. Dimensions: Length - 8.0" OD - 5/8" ID - 0.569" Width - 0.028" "

Uh-oh Battery Level Indicator Kit
Price: $10.35
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Sparkfun Item #: KIT-11087 -

Uh-oh Battery Level Indicator Kit Description: Under-powering a digital device can sometimes have pretty nasty consequences. Brown-out conditions can cause memory to get written or overwritten in odd ways, can cause unexpected behavior in connected systems and just generally screw up your day. One way to avoid this is to keep an eye on your battery voltage and turn off the system before it gets too low (or plug it in). We've whipped up a little board to help you out with this...

USB Female Type A SMD Connector
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Price: $2.17
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Sparkfun Item #: PRT-09011 -

"USB Type ‘A’ Female SMD connector. For use with any PCB that will be used with a Type A to Type A USB cable. Designed to mount to the UBW32. Documents: Datasheet "

USB Female Type B Connector
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Price: $2.17
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Sparkfun Item #: PRT-00139 -

"USB Type ‘B’ Female connector. The 4 connection pins have .1" spacing allowing it to be inserted into development boards and perf boards with mild modification. You can either drill two 80mil holes for the support posts, or cut them off completely. Documents: Datasheet "

USB Male Type A Connector
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Price: $2.61
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Sparkfun Item #: PRT-00437 -

"USB Type ‘A’ Male connector. Ideal for making very small USB dongle devices that plug directly into a computer USB port or through a USB AtoA extension cable. Documents: Datasheet "

USB Mini-B SMD Connector
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Price: $2.61
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Sparkfun Item #: PRT-00587 -

"USB Type ‘Mini-B’ Female SMD connector. This is a 5-pin Mini-B surface mount connector commonly found in MP3 players, media/disk readers, USB hubs, pretty much anything small and USB. Documents: Datasheet "

USB to FIFO Bridge - FT245RL
Price: $10.35
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Sparkfun Item #: COM-00787 -

USB to FIFO Bridge - FT245RL Description: The popular FTDI USB to FIFO IC with built-in EEPROM and built-in oscillator! This IC comes in a 28-pin SSOP package and can be soldered by hand. The FT245R is the latest IC from FTDI requiring very few external components for operation! This FIFO IC gives the user 8 I/O pins for parallel reading and writing. Features: Implements full v2.0 USB protocol Needs no external crystal Requires only a pull-up resistor and two decoupling caps Internal EEPROM...

USB to Micro-B Adapter
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Price: $3.39
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Sparkfun Item #: COM-14567 -

"It’s tiny, it’s handy, and it can give your normal USB-equipped device a micro-B connector! With the USB to Micro-B Adapter you can make a flash drive connect to your tablet, connect a keyboard to your phone in order to text with ease, attach a Bluetooth® dongle to your RPi Zero, and more! Since this adapter is super small, it is very easy to transport anywhere you might need it — making it extremely convenient to have in a pinch. Installation of the USB to Micro-B...

USB UART Convertor CH340G
Price: $6.58
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Elecrow Item #: EL-PPB340GUU -

It\'s a small USB to TTL serial tool, using the CH340G chip. You can use it to connect some serial device to your PC via USB port.Features Compatible with WINDOWS 98/ME/2000/XP/Server 2003/VISTA/Server 2008/Win7/Win8 32-bit & 64-bit To test the unit use the shunt to connect TX and RX (loopback test)3.3V and 5.0V outputs are available to power your project directly from the adapter.Wiki & External linksDrivers ...

USB Weatherproof Connector - Panel Mount (USB B)
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Price: $30.95
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Sparkfun Item #: PRT-11370 -

"There are times when you need to subject your electronics to some pretty intense environments. The most challenging part of designing for rough conditions is the problem of how to protect your electrical connections to the outside world. A normal panel mount connector will collect dust and leak water, but luckily, we just picked up these IP68 rated weatherproof USB connectors. These USB-B type connectors are housed in a molded plastic assembly with O-rings and panel gaskets to keep your panel...

Voltage Detector - NCP303
Price: $0.87
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Sparkfun Item #: COM-10828 -

"The NCP303 is an ultra−low current voltage detector that contains a programmable time delay generator. These devices are specifically designed for use as reset controllers in portable microprocessor based systems where extended battery life is paramount. It features a highly accurate undervoltage detector with hysteresis and an externally programmable time delay generator. This combination of features prevents erratic system reset operation. Features: Quiescent Current of 0.5 uA...

Voltage Level Translator SMD - TXB0108 (Strip of 5)
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Price: $14.50
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Sparkfun Item #: DD-14159 -

"This is a strip of five TXB0108 SMD ICs, which function as bidirectional voltage level translators, from Texas Instruments. These 8-bit noninverting translators use two separate yet configurable power-supply rails, with 1.2V to 3.6V on the A Port and 1.65V to 5.5V on the B Port. This allows for universal low-voltage bidirectional translation between any of the 1.2V, 1.5V, 1.8V, 2.5V, 3.3V and 5V voltage nodes. As each of these ICs is SMD, a high level of skill in soldering is required —...