Sparkfun

US$25.13

This is a package Joystick Shield Kit that requires assembly all inside a clear clamshell. Five momentary push buttons (4+ joystick select button) and a two-axis thumb joystick gives your Arduino functionality on the level of old Nintendo controllers. 

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US$25.13

This is a FTDI cable converter which allows for a simple way to connect serial (TTL) interface devices to USB. The I/O pins of this FTDI cable are configured to operate at 5V. The FTDI cable is designed around an FT232RQ, which is housed in a USB A connector.

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US$25.13

This is a FTDI cable converter which allows for a simple way to connect serial (TTL) interface devices to USB. but also configured to operate at 5V with 3.3V I/O. The FTDI cable is designed around an FT232RQ, which is housed in a USB A connector.

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US$25.13
These lights are extremely bright, with supply currents between 350mA and 700mA. The board can therefore dissipate close to 6.5W. A heatsink is recommended.
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US$24.98
The SparkFun Qwiic Mini Human Presence and Motion Sensor is built around the STHS34PF80 Low-power, high-sensitivity infrared (IR) sensor for presence and motion detection from STMicroelectronics. This sensor features an infrared motion and presence detection sensor with an operating wavelength between 5µm and 20µm. This Mini-sized breakout board is only 0.5in. by 1in. big and has been equipped with two I2C Qwiic connectors to make interfacing with the STHS34PF80 a bit easier.
Delivery within 2-3 weeks
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US$24.69
The PicoBuck LED Driver is an economical and easy to use driver that will allow you to control and blend three different LEDs on three different channels. By default, each channel is driven at 330mA; that current can be reduced by either presenting an analog voltage or a PWM signal to the board. Version 12 of the board adds a solderable jumper that can be closed to increase the maximum current to 660mA.
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US$24.26
This is a 16 channel PWM unit with 12 bit duty cycle control (0-4095), 6 bit current limit control (0-63), and a daisy chainable serial interface. This breakout board is a good way to take full advantage of this useful IC. All 16 PWM channels are broken out to standard 0.1" headers, which run alongside convenient voltage and ground rails.
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US$24.20
This board has one purpose in life - to convert RS232 to TTL and vice versa (TX and RX). This will allow a microcontroller to communicate with a computer. Shifter SMD is powered from the target application and can run at any voltage! That's right - power the board at 5V and the unit will convert RS232 to 5V TTL.
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US$24.20
This little breakout that uses the DS1307 to keep track of the current year, month, day as well as the current time. 
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US$24.20
This is the SparkFun USB to Serial Breakout for the FT232RL, a small board with a built in USB to serial UART interface. This little breakout is built around the FT232RL IC from FTDI, with an internal oscillator, EEPROM, and a 28-pin SSOP package this is a serious little chip.
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US$23.73

This is a 16X2 Character LCD inside a clear clamshell package. This is an add-on to the SparkFun Inventor's Kit (SIK) which gives you the ability to use an LCD as a visual interface for your project.

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US$23.73

This can equip your Arduino with mass-storage capability, so you can use it for data-logging or other related projects. All new microSD shields have a voltage converter chip on-board that converts the Arduino 5V signals to 3.3V signals in accordance with SD specifications.

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US$23.73

The new version of the Ardubot PCB breaks out all the Arduino pins to a separate row of headers. It also includes spaces for LEDs, a reset switch, and servo headers.

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US$23.73
These USB-B type connectors are housed in a molded plastic assembly with O-rings and panel gaskets to keep your panel mount USB connection not only dust proof, but waterproof as well.
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US$23.73
Digital calipers are an absolute essential. Here at SparkFun we use them all the time. These premium calipers come with an extra battery and auto shut-off. Measurements can be taken in either metric or standard. The calipers are 6" in length and make a great addition to any tool set.
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