Breakout Boards | McMaster-Carr

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39 Products

Logic Level Converters for Development Boards

Communicate between a development board and other components, such as sensors and actuators, that use digital signals at a different voltage. Connect your high-voltage power source and devices to one side and your low-voltage power source and devices to the other. These converters have four independent communication channels, each of which connects high-voltage devices to low-voltage devices. All channels are bidirectional, converting voltage from high to low and low to high, so they support protocols such as I²C that send data in both directions on a single wire. They’re often used between a 5V DC device and a 3.3V DC device, but will work with any voltages within the listed range. For fast prototyping, solder on headers and plug them directly into a breadboard. For a permanent connection, solder on wires.

	Input/Output
	Voltage, V DC	Signal Type	No. of Channels	Lg.	Wd.	Hole Ctr.-to-Ctr.		Each
Bidirectional Channel



		0.8 to 5	Digital	4	5/8"	9/16"	0.1"	4894N11	00000

Distance-Measuring Modules for Development Boards

Stream distance readings to your development board in real time. Set up these modules near your robotics, production lines, or liquid monitoring systems to capture changing positioning.

Ultrasonic Modules

Ultrasonic modules use sound pulses to measure distance. They can be used in low lighting. However, they may not be accurate on soft, small, or oddly shaped objects that won’t reflect sound waves properly.

Accuracy	Output Data Freq., Hz	Measures	Temp. Range, ° F	Input Voltage, V DC	Connection Method	Lg.	Wd.	Ht.		Each



2 cm to 4 m	±0.3 cm	40	Distance	32 to 100	5	Push In, Solder	1 3/4"	3/4"	1/2"	7132N13	00000

Infrared LED Modules


Wire Leads Connection	Qwiic Connection

Infrared LED modules bounce light off an object and back into their own sensor to measure distance.

I²C Communication Protocol—Modules with I²C protocol make setup and data collection simple. They convert readings into an electrical signal to transmit to your board.

Qwiic Connection—Those with a Qwiic connection are easily installed using Qwiic cords.

				Output Data
	Sensing Distance, cm	Sensing Distance Resolution, cm	Accuracy	Resolution, bit	Freq., Hz	Measures	Temp. Range, ° F	Input Voltage, V DC	I2C Address	Connection Method	No. of Qwiic Connections	No. of Wire Leads	Wire Lead Lg.	Lg.	Wd.	Ht.		Each
Wire Leads Connection



		4 to 30	—	—	—	50	Distance	15 to 140	4.5 to 5.5	—	Solder	—	3	5"	1 3/4"	3/4"	9/16"	7132N18	000000


		10 to 80	—	—	—	20	Distance	15 to 140	4.5 to 5.5	—	Solder	—	3	5"	1 3/4"	3/4"	9/16"	7132N17	00000


		I²C Communication Protocol—Qwiic Connection



				5 to 10	1	±1 cm	7	200	Distance	0 to 140	3.3	0x62	Solder	2	—	—	2 5/16"	1"	7/8"	7132N12	000000

Laser Modules

Laser modules quickly and accurately detect objects up to 40 meters away. Choose them to measure the distance of fast-moving objects.

I²C Communication Protocol—Modules with I²C protocol make setup and data collection simple. They convert readings into an electrical signal to transmit to your board.

				Output Data
	Sensing Distance, m	Sensing Distance Resolution, cm	Accuracy	Resolution, bit	Freq., kHz	Measures	Temp. Range, ° F	Input Voltage, V DC	I2C Address	No. of Wire Leads	Wire Lead Lg.	Lg.	Wd.	Ht.	Enclosure Rating		Each
I²C Communication Protocol—Wire Leads Connection



		1 to 40	1	±2.5 cm	7	1	Distance	0 to 140	4.75 to 5	0x62	6	7 3/4"	2 1/8"	1"	1 5/16"	IP07	7132N11	0000000

Barcode Scanner Modules for Development Boards

Build a scanner directly into your machine. These scanners are often used in kiosks for scanning standard barcodes and QR codes to identify items, track documents, and manage inventory. Solder on a wire or header to connect the scanner to your electronic device. For a direct connection to your computer, plug in a USB cable (not included).

Modules with Barcode Scanner

	Scan			For Symbology Type
	Distance	Speed, in/sec	Scanner Resolution	1D Scanner	2D Scanner	Output Data Resolution, bit	Temp. Range, ° F	Input Voltage, V DC	No. of USB Connections	Connection Method	Lg.	Wd.		Each
USB-C Connection



		1" to 15 3/4"	9.8	640 × 480	Codabar Code 11 Code 39 Code 93 Code 128 Datalogic 2 of 5 EAN-8 EAN-13 GS1 Databar GS1-128 Industrial 2 of 5 Interleaved 2 of 5 Matrix 2 of 5 MSI UPC-A UPC-E	Aztec Code Data Matrix Micro PDF 417 PDF 417 QR Code	32	0 to 120	3.3	1	Solder	1 3/4"	1"	5716N11	000000

Absolute Pressure Transmitters for Development Boards

Measure your equipment’s pressure and send the data directly to a development board or single-board computer. Also known as transducers, these transmitters convert pressure into an electrical I²C signal and transmit it to your board by connecting a cord (not included) with a Qwiic connection. Transmitters connect directly to your machinery via tubing (not included), letting you monitor activity such as gas tank pressurization and liquid fill level.

Unlike other pressure transmitters that measure the difference between your system and the atmosphere, these transmitters give measurements relative to zero pressure—regardless of altitude or temperature. They will only provide accurate readings within the rated pressure range.

	Input Voltage, V DC	For Tube ID	I2C Address	Number of Qwiic Connections	Ht.	Wd.	For Use With	Accuracy	Housing Material	Connection Material	Temp. Range, ° F		Each
I²C Communication Protocol—Qwiic Connection







	Unthreaded Male Tube Connection

	1 to 25	60	60	1.8 to 3.6	0.1"	0x18	2	1"	1"	Air Argon Nitrogen Water	±0.25%	Stainless Steel	Stainless Steel	30 to 120	7412N11	000000

Development Board Programming Modules


	6 ft. USB Cords

Program mini development boards and other custom circuit boards with these modules. To program your board, attach the module and connect it to your computer using a USB cord (sold separately). Then transfer the code from your computer to the development board. Once the board has been programmed, the module can be removed. Choose an operating voltage that supports the board you’re programming.

Programming Modules										6 ft. USB Cords
Operating Voltage, V DC	Electrical Connection	Header Gender	Hole Ctr.-to-Ctr.	Lg.	Wd.	For Mfr.	For Mfr. Series		Each		Each
5	Mini USB-B	Female	0.1"	1 1/8"	7/8"	Arduino	LilyPad, Pro, Pro Mini	4003N11	000000	4974T32	00000
3.3	Mini USB-B	Female	0.1"	1 3/16"	3/8"	Arduino	LilyPad, Pro, Pro Mini	4003N12	00000	4974T32	0000

Environmental-Monitoring Modules for Development Boards

Keep equipment running and working conditions safe—these modules add air quality tracker capabilities to your development board. Each module gathers data on air conditions, ranging from temperature and humidity to carbon dioxide or volatile organic compound (VOC) levels. These modules easily connect to boards and other components with Qwiic cords or by soldering.

Modules with Air Quality Sensor

Modules with an air quality sensor identify spikes in VOC levels to track air quality changes. Instead of directly measuring VOCs, they measure how much the VOC level has changed in the last 24 hours.

	Output Data
	Resolution, bit	Freq., Hz	Measures	Relative Volatile Organic Compound Index	Input Voltage, V DC	I2C Address	Connection Method	No. of Qwiic Connections	Lg.	Wd.		Each
I²C Communication Protocol—Qwiic Connection



		16	33	Relative Volatile Organic Compound Concentration	0 to 500	1.7 to 3.6	0x59	Solder	2	1"	1"	7126N13	000000

Modules with Temperature, Humidity, and Air Quality Sensor

Modules with a temperature, humidity, and air quality sensor help you make sure the air is healthy in your facility. They directly measure the amount of carbon dioxide in the air.

	Output Data
	Resolution, bit	Freq., Hz	Measures	Temp. Range, ° C	RH	Carbon Dioxide Concentration Measured, ppm	Input Voltage, V DC	I2C Address	Connection Method	No. of Qwiic Connections	Lg.	Wd.		Each
I²C Communication Protocol—Qwiic Connection



		16	0.2	Temperature, Relative Humidity, Carbon Dioxide Level	-10 to 60	0% to 100%	0 to 40,000	2.4 to 5.5	0x62	Solder	2	1"	1"	7126N11	000000

Modules with Temperature, Humidity, and Barometer Sensor

Modules with a temperature, humidity, and barometer sensor are often used as part of an automated system that runs equipment based on the weather. For instance, you can use them in a system that will turn on a humidifier if humidity dips below a certain level.

	Temp. Range, ° C	RH	Barometric Pressure, in. Hg	Input Voltage, V DC	I2C Address	Connection Method	No. of Qwiic Connections	Lg.	Wd.		Each
I²C Communication Protocol—Qwiic Connection



	Temperature, Relative Humidity, Barometric Pressure	-40 to 85	0% to 100%	8.9 to 32.5	1.71 to 3.6	0x76 0x77	Solder	2	1"	1"	7126N12	000000

Modules with Temperature, Humidity, Air Quality, and Barometer Sensor

Modules with a temperature, humidity, air quality, and barometer sensor give you the most comprehensive picture of air conditions in your facility. They directly measure the amount of VOCs and give you an estimated measurement of carbon dioxide based on VOC levels. They monitor air quality using Germany’s Air Quality Index (AQI).

	Temp. Range, ° C	RH	Equiv. Carbon Dioxide Concentration Measured, ppm	Total Volatile Organic Compound, ppb	Barometric Pressure, in. Hg	Input Voltage, V DC	I2C Address	Connection Method	No. of Qwiic Connections	Lg.	Wd.		Each
I²C Communication Protocol—Qwiic Connection



	Temperature, Relative Humidity, Equivalent Carbon Dioxide, Total Volatile Organic Compound Concentration, Air Quality Index, Barometric Pressure	0 to 65	20% to 80%	400 to 650,000	0 to 65,000	8.9 to 32.5	1.2 to 3.6	0x52 0x53 0x76 0x77	Solder	2	1"	1"	7126N14	000000

Circuit Board Voltage Regulators

Safely power low-voltage components in circuits with a high-voltage source. These regulators turn high-voltage inputs into lower, more stable outputs.

Adjustable Output Voltage—Regulators with an adjustable output voltage let you fine-tune the output to best fit your circuit. To adjust the output voltage, connect them to two resistors (not included). The resistance values determine your output voltage.

Dropout Voltage—Dropout voltage is the minimum required difference between the input voltage and your regulator’s output voltage.

		Input Voltage, V DC						Terminal
	Output Voltage, V DC	Min.	Max.	Dropout Voltage, V DC	Max. Current, amp	Electronic Component Trade Size	Electronic Component Trade No.	No. of	Lg.	Material	For Hole Ctr.-to-Ctr.	Ht.	Wd.	Dp.	Pkg. Qty.		Pkg.
Fixed Output Voltage







				Positive

				5	8	35	2	1.5	TO-220	L7805	3	9/16"	Tin-Plated Copper	0.1"	5/8"	13/32"	3/16"	5	7627N11	00000


				6	11	35	2	1.5	TO-220	L7806	3	9/16"	Tin-Plated Copper	0.1"	5/8"	13/32"	3/16"	5	7627N12	0000
				8	14	35	2	1.5	TO-220	L7808	3	9/16"	Tin-Plated Copper	0.1"	5/8"	13/32"	3/16"	5	7627N13	0000
				9	15	35	2	1.5	TO-220	L7809	3	9/16"	Tin-Plated Copper	0.1"	5/8"	13/32"	3/16"	5	7627N14	0000
				12	16	35	2	1.5	TO-220	L7812	3	9/16"	Tin-Plated Copper	0.1"	5/8"	13/32"	3/16"	5	7627N15	0000
				15	19	35	2	1.5	TO-220	L7815	3	9/16"	Tin-Plated Copper	0.1"	5/8"	13/32"	3/16"	5	7627N16	0000
				24	28	35	2	1.5	TO-220	L7824	3	9/16"	Tin-Plated Copper	0.1"	5/8"	13/32"	3/16"	5	7627N17	0000




						Negative

						-15	-35	-19	2	1.5	TO-220	L7915	3	9/16"	Tin-Plated Copper	0.1"	5/8"	13/32"	3/16"	5	7627N24	0000


						-12	-35	-16	1.1	1.5	TO-220	L7912	3	9/16"	Tin-Plated Copper	0.1"	5/8"	13/32"	3/16"	5	7627N23	0000
						-9	-35	-15	2	1.5	TO-220	L7909	3	9/16"	Tin-Plated Copper	0.1"	5/8"	13/32"	3/16"	5	7627N22	0000
						-8	-35	-14	2	1.5	TO-220	L7908	3	9/16"	Tin-Plated Copper	0.1"	5/8"	13/32"	3/16"	5	7627N21	0000
						-6	-35	-11	2	1.5	TO-220	L7906	3	9/16"	Tin-Plated Copper	0.1"	5/8"	13/32"	3/16"	5	7627N19	0000
						-5	-35	-8	1.1	1.5	TO-220	L7905	3	9/16"	Tin-Plated Copper	0.1"	5/8"	13/32"	3/16"	5	7627N18	0000


						Adjustable Output Voltage







										Positive

										1.25 to 37	4.25	40	1.25	1.5	TO-220	LM317	3	9/16"	Tin-Plated Copper	0.1"	5/8"	13/32"	3/16"	5	7627N25	0000

Circuit Board Voltage Regulators Assortments

Safely power low-voltage components in circuits with a high-voltage source. These regulators turn high-voltage inputs into lower, more stable outputs.

					Terminal
	Output Voltage, V DC	Max. Current, amp	Electronic Component Trade Size	Electronic Component Trade No.	No. of	Lg.	Material	For Hole Ctr.-to-Ctr.	Ht.	Wd.	Dp.		Each
Fixed Output Voltage, Adjustable Output Voltage







				Positive, Negative

				-15, -12, -9, -8, -6, -5, 1.25, 5, 6, 8, 9, 12, 15, 24, 37	1.5	TO-220	L7805, L7806, L7808, L7809, L7812, L7815, L7824, L7905, L7906, L7908, L7909, L7912, L7915, LM317	3	9/16"	Tin-Plated Copper	0.1"	5/8"	13/32"	3/16"	7627N26	000000

Motion-Measuring Modules for Development Boards

Measure your device's acceleration, rotation, or orientation. These modules gather data over time and track movement, which can help improve performance, debug issues, and calibrate your components. Solder them onto a development board. To connect them to your device, solder on a wire or header. For a solderless connection, use a Qwiic cord (not included).

Modules with Accelerometer

An accelerometer measures the rate at which your device is speeding up or slowing down.

		Output Data
	Accel., g	Resolution, bit	Freq., kHz	Measures	Temp. Range, ° F	Input Voltage, V DC	I2C Address	Connection Method	No. of Qwiic Connections	Lg.	Wd.		Each
I²C Communication Protocol—Qwiic Connection



		8 16 32 64	16	10	Acceleration	-40 to 220	1.2 to 3.6	0x1E 0x1F	Solder	2	1"	1"	8184N11	000000

Modules with Magnetometer

A magnetometer measures your device's orientation.

		Output Data
	Magnetic Field Measuring, G	Resolution, bit	Freq., kHz	Measures	Temp. Range, ° F	Input Voltage, V DC	I2C Address	Connection Method	No. of Qwiic Connections	Lg.	Wd.		Each
I²C Communication Protocol—Qwiic Connection



		0 to 8	18	1	Magnetic Field Strength	-40 to 220	2.8 to 3.6	0x30	Solder	1	3/4"	5/16"	8184N14	000000

Modules with Accelerometer and Gyroscope

A gyroscope measures how fast your device is rotating.

An accelerometer measures the rate at which your device is speeding up or slowing down.

			Output Data
	Accel., g	Velocity	Resolution, bit	Freq., kHz	Measures	Temp. Range, ° F	Input Voltage, V DC	I2C Address	Connection Method	No. of Qwiic Connections	Lg.	Wd.		Each
I²C Communication Protocol—Qwiic Connection



		2 4 8 16	125 °/s 250 °/s 500 °/s 1,000 °/s 2,000 °/s 4,000 °/s	16	7.68	Acceleration, Angular Velocity	-40 to 185	1.71 to 3.6	0x6A 0x6B	Solder	2	1"	1"	8184N12	000000

Modules with Accelerometer, Gyroscope, Magnetometer

A gyroscope measures how fast your device is rotating.

A magnetometer measures your device's orientation.

An accelerometer measures the rate at which your device is speeding up or slowing down.

				Output Data
	Accel., g	Velocity	Magnetic Field Measuring, G	Resolution, bit	Freq., kHz	Measures	Temp. Range, ° F	Input Voltage, V DC	I2C Address	Connection Method	No. of Qwiic Connections	Lg.	Wd.		Each
I²C Communication Protocol—Qwiic Connection



		2 4 8 16	125 °/s 250 °/s 500 °/s 1,000 °/s 2,000 °/s 4,000 °/s	0 to 8	18	1	Acceleration, Angular Velocity, Magnetic Field Strength	-40 to 220	1.71 to 3.6	0x6A 0x6B 0x30	Solder	2	1"	1"	8184N13	000000

Motion-Sensing Modules for Development Boards

By detecting body heat, these modules sense when people are moving. Connect them to your development board to integrate them into alarm systems, automated lighting, and other applications.

Modules with Adjustable Infrared Sensor

Image of Product. Front orientation. Development Board Sensor Modules. Motion-Sensing Modules for Development Boards , Adjustable.

Modules with an adjustable infrared motion sensor let you expand or lower the sensing distance. To connect them to a device, solder wires or headers to them.

Field of View	Input Voltage, V DC	Connection Method	Lg.	Wd.		Each



2 to 6	110°	5 to 12	Solder	1 1/4"	1"	8194N13	000000

Modules with Fixed Infrared Sensor

Modules with a fixed infrared motion and thermal sensor can detect if a person is moving or even just present within the sensing distance. That means you could use them to automate lighting in an office where workers are sitting still. To connect them to your device, solder on wires or headers. For a solderless connection, use a Qwiic cord.

				Output Data
	Sensing Distance, m	Field of View	Accuracy	Resolution, bit	Freq., Hz	Temp. Range, ° F	Input Voltage, V DC	I2C Address	Connection Method	No. of Qwiic Connections	Lg.	Wd.		Each
I²C Communication Protocol—Qwiic Connection



		4	80°	±0.3° C	16	30	-40 to 185	1.7 to 3.6	0x5A	Solder	2	1"	1"	8194N12	000000

Airflow Modules for Development Boards

Position these modules in vents or near sensitive electronics to monitor airflow. Unlike handheld meters, these modules continuously monitor airflow and alert you to changes. Connect them to development boards with Qwiic cords or by soldering.

Modules with Airflow Sensor

			Output Data
	Airflow Speed, mph	Airflow Speed Tolerance, mph	Resolution, bit	Freq., Hz	Measures	Temp. Range, ° F	Input Voltage, V DC	I2C Address	Connection Method	No. of Qwiic Connections	Lg.	Wd.		Each
I²C Communication Protocol—Qwiic Connection



		0 to 33.6	-1.68 to 1.68	12	8	Airflow	0 to 185	2.7 to 3.3	0x28	Solder	2	1"	1"	7135N11	000000

RFID Reader Kits for Development Boards


	Reader

Scan RFID cards when prototyping systems for item tracking and conveyor sorting. These readers scan one card at a time without requiring a direct line of sight, so they'll work in areas where bar code scanners can't. An LED and a buzzer indicate each successful scan. Readers connect to your development board with an included Qwiic cord that snaps into place, saving you the effort of soldering. If your board doesn’t have a Qwiic connection, choose a cord with a machine-pin plug. The two included RFID cards, as well as additional cards, have unique IDs and cannot be rewritten.

Sensing Distance—Sensing distance for your reader is reduced when cards are misaligned or scanned in hot or cold environments. The sensing distance in the table below represents typical factory conditions for the included card.

	Readers										Additional Cards
	Voltage, V DC	Electrical Connection	Sensing Distance	Ht.	Wd.	Dp.	Temp. Range, ° F	Includes		Each		Each
Low Frequency (125 kHz)







				I²C Communication Protocol

				2.8 to 5	Qwiic	5"	3/8"	1 1/4"	1"	0 to 120	One Reader One 4" Lg. Qwiic Cord Two 125 kHz RFID Cards	5056N11	000000	5056N12	00000