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Use this module to detect a magnetic field.  This is an Analog sensor, when a magnet is detected the LED will turn on, otherwise the LED will be...

With the sound module, we can detect the presence of loud sounds. While this module has a microphone on it, our Arduino does not have the brains...

Including CNC Shield V3.0The 3D printer stepper motor shield V3 can be used as driver expansion board for engraving machines and 3D printers.It has...

After a long day out harvesting in the terminal block fields, we've returned with a veritable bounty of these very nice and compact 2.54mm/0.1" ...

If you want to make a kit you'll need some solder. This 0.1 lb / 50 gram spool is a good amount, not too much (like 1 lb spools) and not too lit...

The DFRobot 360 degree rotary encoder module is based and designed on the EC11 rotary encoder button. The module has three signal terminals: te...

This is a set of aluminum electrolytic decoupling capacitors. Very handy for experiments and home cooked circuit board. This pack comes with 12...

This adapter allows you to connect a barrel jack connector to bare wires. One end has screw terminals and the other has a 5.5x2.1mm(0.22x0.08"), c...

This is the new Arduino Uno Rev 3. In addition to all the features of the previous board, the arduino Uno Rev 3 now uses an ATmega16U2 instead of t...

This kit includes JST XHP-2, XHP-3 and XHP-4 housing (20 units each), through-hole type shrouded header (20 units each) and crimp contact (100 uni...

This is a small device called a reed switch. When the device is exposed to a magnetic field, the two ferrous materials inside the switch pull to...

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 perf...

This is a simple pack of five Pink LilyPad LEDs that are still attached to one another, letting you snap the LEDs apart at your leisure to sew into...

This Photo Transistor Light Sensor is a simple sensor that detects ambient light. It's kind of the opposite of an LED - when light hits the litt...

This A/V RCA Cable for Raspberry Pi is a great way to turn your Pi 3, 2, A+ or B+'s output into a full on composite video and audio device.  Simply...

The Arduino DMX shield is an add-on (or "shield") for the Arduino. It is an easy way to use the Arduino as a DMX-Master device, just by adding ...

These are very bright LEDs. The LEDs are so bright that it hurts to look directly at them. Please take a look at the pictures to get an idea of th...

The DFRobot Relay Module is a standard relay used with a controller board to interface external electrical circuits or modules. Some of the most...

Listen to this good news - we now have an all in one digital audio amp breakout board that works incredibly well with the Raspberry Pi! If you'r...

Not just a simple breakout board, this microSD adapter goes the extra mile - designed for ease of use. Onboard 5v->3v regulator provides 150mA f...

When you need to switch a lot of power, N channel MOSFETs are best for the job. These FETs can switch over 60A and 30V and are TO-220 package so...

If you need to connect a battery pack or wired power supply to a board that has a DC jack - this adapter will come in very handy! There is a 2.1mm ...

This is a 9V battery pack with on/off switch and a pre-attached 5.5mm/2.1mm center-positive barrel plug. Use this to battery-power your Arduino ...

These single-pin housings work with our wires with pre-crimped terminals and our crimp pins to let you quickly make custom cables that mate with...