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This economical sensor provides 2cm to 400cm of non-contact measurement functionality with a ranging accuracy that can reach up to 3mm. Each HC-SR04 module includes an ultrasonic transmitter, a receiver and a control circuit.
There are only four pins that you need to worry about on the HC-SR04: VCC (Power), Trig (Trigger), Echo (Receive), and GND (Ground). You will find this sensor very easy to set up and use for your next range-finding project!
Specifications:
- Model: HC-SR04
- Color: Blue Silver
- Working voltage : 5V(DC)
- Static current: Less than 2mA.
- Output signal: Electric frequency signal, high level 5V, low level 0V.
- Sensor angle: Not more than 15 degrees.
- Detection distance: 2cm~450cm.
- High precision: Up to 3mm
- Mode of connection: VCC / trig(T) / echo(R) / GND
- Module Working Principle:
- Adopt IO trigger through supplying at least 10us sequence of high level signal
- The module automatically send eight 40khz square wave and automatically detect whether it receive the returning pulse signal
Resources:
A good tutorial available at ModMyPi.
http://www.modmypi.com/blog/hc-sr04-ultrasonic-range-sensor-on-the-raspberry-pi
Read the Docs
What's in the box:
1 x HC-SR04 distance sensor
This waterproof ultrasonic distance sensor is for those applications that are a bit more rugged! 25cm - 450cm sensing range.
We have used the HC-SR04 Ultrasonic Distance Sensor many times and for many good reasons. It is pretty easy to use, it performs well, and it is very inexpensive. For collision avoidance robots or intruder detection, this sensor is usually all you’ll need.
However, using the HC-SR04 outside is a different story. It is a pretty fragile device and can easily be damaged by dirt, or even high winds. And, above all, it is not waterproof.
For these circumstances you can use this sensor, in more weathered states, even outdoors
Specifications:
Operating voltage: DC 5V
Total current work: 40mA
Acoustic emission frequency: 40khz
Maximum distance: 4.5m
Blind: 25cm
Wiring:
5V (positive power supply)
Trig (control side) RX
Echo (the receiver) TX
GND (negative)
Resolution: about 0.5cm
Angle: 70 degrees
Working temperature: -10 ~ 70 ℃
Storage temperature: -20 ~ 80 ℃
Product Features:
- small size, easy to use;
- low voltage, low power consumption;
- high accuracy;
- strong anti-jamming;
- integrated with wire enclosed waterproof probe, suitable for wet, harsh measuring conditions.
Application:
1 Horizontal distance;
2 obstacle avoidance, automatic control;
3 traffic control;
4 security, industrial control;
5 artificial intelligence, and research
Basic working principle:
(1) using IO port TRIG trigger location, to the high level signal of at least 10us;
(2) module automatically sends 8 40KHz pulse, automatic detecting whether a signal returns;
(3) on signal return, a high level is output through the IO port ECHO, the time duration of the high level is ultrasonic from launch to return. The test distance = (high level time * speed of sound (340M/S)) /2;
Usage
Package Includes:
1 x DC 5V Waterproof Ultrasonic Module Distance Measuring Transducer Sensor
This 16GB MicroSD Card is preloaded with the Official Raspberry Pi OS. For beginners and first-time users, this is the easiest way to get started with Raspberry Pi Boards (this will work for all RPi models). There are a range of popular operating systems for you to try, however the Official Raspberry Pi OS is the majorly supported system to choose.
Please Note. This Micro SD Card does NOT come with a SD Card Adapter, it is the Micro SD Card ONLY
The SanDisk 16GB Preloaded Micro SD Card Features:
- Superior Random-Access Performance - Perfect for the Raspberry Pi
- Safe from X-rays and magnetic fields
- Reliable shock-proof technology
- Water and dust proof, thanks to EMC coating
- Tested and proven to last up to 24 hours in sea water
- Capacity : 16GB
- Weight : Approx 0.2g
- Operating Voltage : 2.7 ~ 3.6V
- Data Transfer Speed: Up to 48MB/s read
- Speed Class Class 10
- preloaded with Raspberry Pi OS
What's in the box?:
1 x SanDisk microSDHC
Resources:
Latest image available from the Raspberry Pi Foundation Downloads
This Micro SD Card Bundle for the Raspberry Pi consists of a SanDisk Class 10 UHS-I Micro SD card preloaded with Raspberry Pi OS
Latest image available from the Raspberry Pi Foundation Downloads
Please Note. This Micro SD Card does NOT come with a SD Card Adapter, it is the Micro SD Card ONLY
The SanDisk 32GB Preloaded Micro SD Card Features:- Superior Random-Access Performance - Perfect for the Raspberry Pi
- Safe from X-rays and magnetic fields
- Reliable shock-proof technology
- Water and dust proof, thanks to EMC coating
- Tested and proven to last up to 24 hours in sea water
- Capacity : 16GB
- Weight : Approx 0.2g
- Operating Voltage : 2.7 ~ 3.6V
- Data Transfer Speed: Up to 48MB/s read
- Speed Class Class 10
- preloaded with Raspberry Pi OS
Description:
This complete robot car kit includes the arduino as well. Just add batteries and code. Great for beginners to learn how to code using sensors and motion on the Arduino boards
Pdf manual available at http://www.cs.columbia.edu/~sedwards/presentations/robot-car-instructions.pdf
Get more details at https://create.arduino.cc/projecthub/hda-robotics/project-1-2wd-obstacle-avoiding-robot-390ef8
Package Includes:
- Car chassis x 1
- Car Wheels x 2
- DC Gear Motor x 2
- 20 line gun code disk x 2
- Fasteners (high intensity black acrylic) x 4
- Caster x 1
- Four battery box x 1
- Quality Rocker Switch x 1
- Assembly drawing x 1
- Several screws and nuts
- V5 shield x 1
- UNO R3 x 1
- SG90 x 1
- FPV x 1
- L298N x 1
Features:
Specifications:
Size: 235 x 235 x 3mm
Material: Tempered glass
Application: For ender-3/pro 3D printer
Package Includes:
1x Creality 3D® Glass Platform
The SanDisk 32GB Micro SD Card with Superior Random-Access Performance - Perfect for the Raspberry Pi
Specifications:
- SanDisk Ultra microSD.
- Capacity: 32 GB
- Flash card type: MicroSDXC
- Flash memory class: Class 10
- Internal memory type: UHS-I.
- Adapter not included
The SanDisk 64GB Micro SD Card with Superior Random-Access Performance - Perfect for the Raspberry Pi
Specifications:
- SanDisk Ultra microSD.
- Capacity: 64GB
- Flash card type: MicroSDXC
- Flash memory class: Class 10
- Internal memory type: UHS-I.
- Adapter not included
The SanDisk 128GB Micro SD Card with Superior Random-Access Performance - Perfect for the Raspberry Pi
Specifications:
- SanDisk Ultra microSD.
- Capacity: 128GB
- Flash card type: MicroSDXC
- Flash memory class: Class 10
- Internal memory type: UHS-I.
- Adapter not included
This Grove-ultrasonic sensor is a non-contact distance measurement module which is compatible with the Grove system. It's designed for easy modular project usage with industrial performance. It can measure from 3cm to 350cm with the accuracy up to 2mm. It is a perfect ultrasonic module for distance measurement, proximity sensors, and ultrasonic detector.
Compared with traditional ultrasonic modules HC-SR04, this module integrates a single-chip microcomputer, and the transmitting signal and the receiving signal share one pin by time division multiplexing, so only one I/O pin is occupied. Another difference is that HC-SR04 only supports 5V voltage, while this module supports 5V and 3.3V. As we know, the Raspberry pi I/O only supports 3.3V. Therefore, this Grove - Ultrasonic Distance Sensor can be directly connected to the I/O of the Raspberry Pi, but HC-SR04 needs to use a voltage conversion circuit.
- 3.3V / 5V compatible, wide voltage level: 3.2V~5.2V
- Only 3 pins needed, save I/O resources
- Wide measurement range: 3cm ~ 350cm
- Easy to use: grove connector, plug and play
- Arduino library ready
Specifications:
- Operating Voltage: 3.2~5.2V
- Operating Current: 8mA
- Ultrasonic Frequency: 40kHz
- Measuring Range: 3cm to 350cm
- Resolution: 1cm
- Measurement Angle: 15 degree
- Dimensions: 50mm x 25mm x 16mm
Packing List:
- 1 x Grove - Ultrasonic Ranger
- Grove 4 Pin Buckled 20cm Cable
Resources:
- Grove - Introduction to Grove
- Grove - Ultrasonic Ranger interface with Arduino and Raspberry pi by wiki.seeedstudio
- Grove - Ultrasonic Ranger schematic
- Grove - Ultrasonic Ranger library
- CDC file
Description:
64GB Sandisk Micro SD card preinstalled with the Raspberry Pi OS. Perfect for both the Raspberry Pi 4 Model B, Raspberry Pi 3 or Raspberry Pi Zero.
Specifications:
- This is the hard drive and operating system for your Raspberry Pi
- Extended partition to make full use of the SD card
- Ready to use – plug it in and you’re ready to go
- Only the most current stable release of the operating system will be used
- High quality MicroSD card
1 x micro USD 64GB
Resources:
How to format a 64GB SD card for Raspberry Pi
Raspberry Pi Operating System Downloads: https://www.raspberrypi.org/downloads/
Everyone likes the SR04 ultrasonic range finder. This is the bracket for this useful distance sensor, enables you to mount the sensor to your mobile robot or project easily.
Video available at https://youtu.be/5LP2Xb6YkKc
Specifications:
- Colour: Clear
- Material: Acrylic, please tear off the protective cover
- Size: ~ 50mm x 36mm x 3mm
- Stationary ultrasonic sensor modules
- Matches HC-SR04 ultrasonic sensor module
- Two mounting holes with M3 diameter (3.0mm)
- Distance between two mounting holes: ~ 14mm
What's in the box?
1 x acrylic bracket
Ultrasonic Range finder has been very useful in many electronic project. It is low cost and teaches us the propagation of sound wave, learning about science while completing your project:) While it is popular, HC-SR04 ultrasonic sensor is 5V operated, so it is difficult to be used with 3.3V system like NodeMCU, Wemos, Raspberry pi, micro:bit or 3.3V Arduino board. No more waiting, we bring you the 3.0V to 5.5V Ultrasonic Ranging Module.
Using your echo-location abilities to detect tasty fish treats. Until genetic modifications catches up with our desires, we'll just have to make do with these handy 3V Ultrasonic Sonar Distance Sensor and a pair of flippers. These ubiquitous sensors are really common in robotics projects, but they can also be used for automation, interactive art and motion sensing. They work at about 2cm to 450cm(5V) or 400cm(3V) away, but we think 10cm-250cm will get you the best results.
These sensors are fast, fairly easy to use, and low cost. Unlike the more common HC-SR04 series, this model can be powered by 3V or 5V and the logic level will be the same. This makes this model great for use with just about any microcontroller or microcomputer. And, its HC-SR04 software compatible so just plug it in and it works the same! (Note the size is different from the HC-SR04 so you may need to make mounting adjustments)
Of course you can also use with 5V system such as Arduino UNO, Arduino Mini and Maker UNO.
Features:
- Voltage: 3V - 5.5VDC
- Current: 2.2mA
- Measuring Range: 2cm - 450cm
- Working Temperature: 0ºC to 70ºC
- Compatible with HC-SR04 Ultrasonic Sonar Distance Sensor
- Properly labelled pin assignment
- Arduino and Raspberry Pi compatible
What's in the box?
1 x 3V - 5.5V Ultrasonic Ranging ModuleResources:
- Arduino Sketch for HC-SR04
- Testing Ultrasonic Ranging Sensor, HC-SR04, tutorial
- HC-SR04 Microchip PIC16F887, tutorial
Add Space, Fast. Just Plug It In.
The simple way to add extra, high-speed storage to your device! The SanDisk Ultra Fit™ USB 3.1 Flash Drive delivers performance that lets you move a full-length movie up to -15x faster than with standard USB 2.0 drives. Plus, thanks to its compact, streamlined design, you can plug it in and leave it in.
Compact plug-and-stay design
This compact flash drive is designed as plug-and-stay storage for laptops, tablets, TVs, gaming consoles, car audio systems, and more. Plug it in, and you’ve got instant storage that’s always on board!
High-speed USB 3.1 performance
Transfer files quickly with 130MB/s read speed. With write speeds up to 15x faster than standard USB 2.0 drives, you can move a full-length movie to the drive in less than 30 seconds.
SanDisk SecureAccess® software helps protect your privacy
Create a private folder on your drive with SanDisk SecureAccess software. This 128-bit AES encryption software makes it easy to password-protect critical files. Drag and drop files into the vault, and they'll be encrypted.
Full Specifications
Dimensions: 29.8mm x 14.3mm x 5mm
What's in the box?
1 x USB flash drive
Datasheet
Disclosures
- 32GB, 64GB, 128GB, 256GB, 512GB: Write up to 15X faster than standard USB 2.0 drives (4MB/s), read speeds up to 130MB/s. 16GB: Write faster than standard USB 2.0 drives (4MB/s); read speeds up to 130MB/s. USB 3.1 Gen 1 or USB 3.0 port required. Based on internal testing; performance may be lower depending on host device. 1MB=1,000,000 bytes.
- Password protection uses 128-bit AES encryption and is supported by Windows® 7, Windows 8, Windows 10 and Mac® OS X® v10.9 (Software download required for Mac, see www.SanDisk.com/SecureAccess). FOR USE IN CHINA: Password protection is supported by Windows® 7, Windows 8, Windows 10 and Mac® OS X® v10.9 (Software download required for Mac, see www.SanDisk.com/SecureAccess)
- Based on 1.2GB MPEG-4 video transfer to drive with USB 3.1 Gen 1 or USB 3.0 host device. Results may vary based on host device, file attributes, and other factors.
- Registration required; terms and conditions apply.
- 1 GB=1,000,000,000 bytes. Actual user storage less.
Add Space, Fast. Just Plug It In.
The simple way to add extra, high-speed storage to your device! The SanDisk Ultra Fit™ USB 3.1 Flash Drive delivers performance that lets you move a full-length movie up to -15x faster than with standard USB 2.0 drives. Plus, thanks to its compact, streamlined design, you can plug it in and leave it in.
Compact plug-and-stay design
This compact flash drive is designed as plug-and-stay storage for laptops, tablets, TVs, gaming consoles, car audio systems, and more. Plug it in, and you’ve got instant storage that’s always on board!
High-speed USB 3.1 performance
Transfer files quickly with 130MB/s read speed. With write speeds up to 15x faster than standard USB 2.0 drives, you can move a full-length movie to the drive in less than 30 seconds.
SanDisk SecureAccess® software helps protect your privacy
Create a private folder on your drive with SanDisk SecureAccess software. This 128-bit AES encryption software makes it easy to password-protect critical files. Drag and drop files into the vault, and they'll be encrypted.
Dimensions: 29.8mm x 14.3mm x 5mm
What's in the box?
1 x USB flash drive
Datasheet
- 32GB, 64GB, 128GB, 256GB, 512GB: Write up to 15X faster than standard USB 2.0 drives (4MB/s), read speeds up to 130MB/s. 16GB: Write faster than standard USB 2.0 drives (4MB/s); read speeds up to 130MB/s. USB 3.1 Gen 1 or USB 3.0 port required. Based on internal testing; performance may be lower depending on host device. 1MB=1,000,000 bytes.
- Password protection uses 128-bit AES encryption and is supported by Windows® 7, Windows 8, Windows 10 and Mac® OS X® v10.9 (Software download required for Mac, see www.SanDisk.com/SecureAccess). FOR USE IN CHINA: Password protection is supported by Windows® 7, Windows 8, Windows 10 and Mac® OS X® v10.9 (Software download required for Mac, see www.SanDisk.com/SecureAccess)
- Based on 1.2GB MPEG-4 video transfer to drive with USB 3.1 Gen 1 or USB 3.0 host device. Results may vary based on host device, file attributes, and other factors.
- Registration required; terms and conditions apply.
- 1 GB=1,000,000,000 bytes. Actual user storage less.
Add Space, Fast. Just Plug It In.
The simple way to add extra, high-speed storage to your device! The SanDisk Ultra Fit™ USB 3.1 Flash Drive delivers performance that lets you move a full-length movie up to -15x faster than with standard USB 2.0 drives. Plus, thanks to its compact, streamlined design, you can plug it in and leave it in.
Compact plug-and-stay design
This compact flash drive is designed as plug-and-stay storage for laptops, tablets, TVs, gaming consoles, car audio systems, and more. Plug it in, and you’ve got instant storage that’s always on board!
High-speed USB 3.1 performance
Transfer files quickly with 130MB/s read speed. With write speeds up to 15x faster than standard USB 2.0 drives, you can move a full-length movie to the drive in less than 30 seconds.
SanDisk SecureAccess® software helps protect your privacy
Create a private folder on your drive with SanDisk SecureAccess software. This 128-bit AES encryption software makes it easy to password-protect critical files. Drag and drop files into the vault, and they'll be encrypted.
Dimensions: 29.8mm x 14.3mm x 5mm
What's in the box?
1 x USB flash drive
Datasheet
- 32GB, 64GB, 128GB, 256GB, 512GB: Write up to 15X faster than standard USB 2.0 drives (4MB/s), read speeds up to 130MB/s. 16GB: Write faster than standard USB 2.0 drives (4MB/s); read speeds up to 130MB/s. USB 3.1 Gen 1 or USB 3.0 port required. Based on internal testing; performance may be lower depending on host device. 1MB=1,000,000 bytes.
- Password protection uses 128-bit AES encryption and is supported by Windows® 7, Windows 8, Windows 10 and Mac® OS X® v10.9 (Software download required for Mac, see www.SanDisk.com/SecureAccess). FOR USE IN CHINA: Password protection is supported by Windows® 7, Windows 8, Windows 10 and Mac® OS X® v10.9 (Software download required for Mac, see www.SanDisk.com/SecureAccess)
- Based on 1.2GB MPEG-4 video transfer to drive with USB 3.1 Gen 1 or USB 3.0 host device. Results may vary based on host device, file attributes, and other factors.
- Registration required; terms and conditions apply.
- 1 GB=1,000,000,000 bytes. Actual user storage less.
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