Generic1
Specifications
- Colour: Black
- Buzzer Type: Piezoelectric
- Sound Pressure Level 85 dB
- Rate Voltage: 12V DC
- Operating Voltage: 3 - 24V
- Max Current Rating 11mA
- Frequency 3900±500Hz
- Drive Method: Drive Circuit Built in
- Mounting Holes
What's in the box?
1 x Piezoelectric Buzzer
Resources
- Python library
- Using a Buzzer With a Raspberry Pi
Simply plug this tiny module into the GPIO header on the Raspberry Pi and away you go!
- DS3231 RTC IC
- Self-adjust 3.3V and 5V
- Size: 14x14x12 mm
Features
- Smaller
- Work in 3.3V and 5V
- Supported Raspberry Pi and Arduino
What's in the box?
1 x RTC Module
1 x Battery
Resources
This digital temperature and humidity module is a digital output signal containing a calibrated temperature and humidity combined sensor.
It uses dedicated digital module capture technology and temperature and humidity sensor technology to ensure that products has high reliability and excellent long-term stability. Sensor includes a capacitive humidity sensing element and a high-precision temperature measurement device, and with a high-performance 8-bit microcontroller connected. Therefore, the product has excellent quality, fast response, anti-interference ability, low cost and other advantages. Ultra-small size, low power consumption, signal transmission distance up to 20 meters. Making it the best choice for all kinds of applications and even the most demanding applications.
Applications
HVAC (Heating Ventilation Air Conditioning), dehumidifiers, testing and inspection equipment, consumer goods, automotive, automation, data loggers, home appliances, humidity regulator, medical, weather stations and other related humidity detection control.
Specifications
- Dimensions: 40 x 23mm
- Weight: 4g
- Working voltage: 3 V - 5.5 V
- Port: digital two-way single bus
- Temperature range: -40 to 80 °C ± 0.5 °C
- Humidity: 20 to 90% RH ± 2% RH
- Platform: Arduino, SBC
What's in the box?
1 x Sensor Module
Resources
How to setup a DHT22 with your Raspberry Pi.The resistor is already on the PCB so you can skip the breadboard part.
- Datasheet (DHT22)
- Example Code (Arduino) (Credit to Adafruit)
LM393 comparing two photosensitive resistance, when the imbalance (eg side pressure runway black) immediately control side of the motor stops rotating, the other side of the motor rotation acceleration, so that the car modification direction, return to the right direction, the whole process is a closed loop therefore rapid and sensitive control.
With the aim of simplifying the complex principle, we first have a by digital circuit to the intelligent tracking car, in the assembly process, we could not only familiar with the mechanical principle gradually can learn to: photocell, a voltage comparator, a motor drive circuit, and other related electronic knowledge.
Photosensitive resistance device:
This is light-sensitive resistance, it can detect the external light intensity, the stronger the outside light photosensitive resistance resistance is small, the outside light weaker resistance is greater when the red LED light projected on a white and black runway because reflection rate is different, the resistance value of the light-sensitive resistance will occur obvious difference for subsequent circuit control.
LM393 comparator integrated circuit:
LM393 is a dual voltage comparator integrated circuit, which consists of two independent precision voltage comparator. its role compare the two input voltage, based on the level of two input voltage change the level of output voltage. The output has two states: close to open or close to the low level, LM393 using open collector output, so it is necessary to add the pull resistance to output high level.
DC motor with gear reduction:
DC motor drive the car needs to slow down, otherwise to speed up the car, then ran too fast not control, and the deceleration torque is too small and could not run up. We specialize in custom of this type of motor is integrated with the reduction gear and greatly reducing the manufacture difficulty is very suitable for our use.
LM393 comparing two photosensitive resistance, when the imbalance (eg side pressure runway black) immediately control side of the motor stops rotating, the other side of the motor rotation acceleration, so that the car modification direction, return to the right direction, the whole process is a closed loop therefore rapid and sensitive control.
Assembly steps:
The first step: circuit part of the basic welding
The welding circuit part is relatively simple, the welding sequence according to the element height from low to high, the first 8 resistance welding, welding must use a multimeter to confirm whether the proper welding resistance, polar components such as transistors, green lights, definitely clear electrolytic capacitor polarity as reference element we are photo welding, welding capacitor short is the negative side of the insertion pin PCB screen printing shadow, green welding LED note long pin is positive, and the welding is not too long or easy bad welding, D4 D5 R13 R14 can temporarily do not weld, the integrated circuit chip can be inserted, preliminary after completion of welding check carefully prevent, be negligent.
Second step: mechanical assembly
The universal wheel screw is inserted into the PCB hole, and screwed into the universal wheel nut and a universal wheel. the battery box is stuck on the PCB by the double adhesive tape, the lead wire passes the PCB reserved Kong Han received PCB, the red line is connected with the 3 V positive power supply, and the yellow line is connected to the ground.
Mechanical part and assembly can be mounted first wheels, wheel consists of three pieces of black acrylic round tablets, assembly prior to exposing protective film, the inside of the wheel center hole grows circular hole, middle of the round plate diameter is relatively small, lateral wheel piece center hole Shiyuan, with two screw nuts fixed set good three round tablets, and black self-tapping screws fixed on the rotating shaft of the engine. Finally the silicone rubber tire sleeve on the wheel. Lead connection lead wire of the motor and the wheel assembly is the use of the glue on the PCB making position, attention wheels and the PCB edge retaining sufficient clearance, the motor leads are soldered to the PCB. Note that adequately longer lead, to avoid the motor rotation direction error is convenient for changing the lead wire of the order.
The third step: the installation of opto-electronic circuits
Photosensitive resistance and light-emitting diode (attention polarity) is the reverse installed on the PCB, and the ground distance of about 5mm, the distance between the light-sensitive resistance and light-emitting diode is also about 5mm. Finally can pass electrical test.
The fourth step: Vehicle debugging
In the battery box in 2 AA batteries, switches to dial in the "on", the car driving right reverse is traveling along the direction of the universal wheel, if hold the left side of the photosensitive resistance, the car to the right of the wheel rotation, Keep to the right of photosensitive resistance, the left side of the car wheel must turn, if car travel back can exchange connection of two motors at the same time. as one of the normal back on the other side as long as the exchange of the rear of the motor can be wiring.
Note: We don't supply any manuals, please note this before you buy this DIY kit.
What's in the box?
1 x Electronic DIY Kit (batteries are not included)
MS wind vane as used in the Raspberry Pi foundation weather station project to measure wind direction.
Hack this component to form part of your weather station.
Specifications:
| Range | 0 to 360° (352° electrical, 8° open) |
| Accuracy | 1% of full scale |
| Operating Voltage | 10-36 VDC |
| Sensitivity | 1 m/s (2.2 mph) |
Resources:
View the project details here
And some more help here
Article specific to the wind vane only
Hack this component to form part of your weather station.
Specifications
| Model | WH-SP-RG |
| Usage | Household |
| Display Type | Digital |
| Theory | Temperature Transmitter |
| Max Measuring Temperature | 49°C & Under |
| Style | Standing Station |
| Material | ABS |
| Colour | White |
| Weight | 270g |
What's in the box?
1 x Rain Gauge
Resources
View a weather project details here
The aluminum heat sink can reduce the risk of hardware failure due to overheating.
Better efficiency if used with a fan
Ideal for use with your Nema 17 stepper motor.
Specifications
- Material: Aluminum
- Colour: Black
- Weight: 20g
- Size: 40 x 40 x 11mm
Applications
LED, Power IC, Memory, Transistor, stepper motor etc.
This heatsink comes with Heatsink Adhesive Tape.
What's in the box?
1 x Aluminum heat sink 40 x 40 x 11mm
Solenoid valves are efficient and durable providing a cost effective and reliable method of controlling water flow in a wide range of uses; from irrigation, where they are suitable for watering large areas such as sports grounds, municipal gardens, agricultural and small gardens, to applications in water-saving devices, water treatment and general industry.
Specifications
- Material: PP
- Voltage: about 12V DC
- Rated power: about 5W
- Operation model: normally closed (N/C)
- Pressure: about 0.02 - 0.8Mpa
- Port size: about G3/4
- Fluid temperature: about 0-100 degrees Celsius
- Usage: water and low viscosity fluids
- Flow characteristics:
- about 0.02Mpa>2L/min;
- about 0.10Mpa>10L/min;
- about 0.30Mpa>16L/min;
- about 0.80Mpa>28L/min
What's in the box?
1 x Solenoid valve
Please note:
The actual valve size in the unit is smaller than the port size as you will find with most taps.
- Temperature measurement range: -55°C ~ +125°C
- Accuracy: ± 0.5°C
- Encapsulation: TO-92
What's in the box?
1 x DS18B20
You will also need a 4.7k resistor
Resources
https://learn.adafruit.com/adafruits-raspberry-pi-lesson-11-ds18b20-temperature-sensing/overview
These drive 40 teeth gears are made of quality brass, rustproof and no corrosion, durable and stable to use, with good bearing capacity. Fits a large range of 3D printers
Specifications:
- Material: brass
- Color: golden
- Model: reprap
- Operation temperature: 250°
- Style: 1.75mm
- Installation: female connection
- Used for 1.75mm filament
Package includes:
1x Feed Wheel
TB6600 is an easy-to-use professional stepper motor driver, which could control a two-phase stepping motor. It is compatible with Arduino and other microcontrollers that can output a 5V digital pulse signal. TB6600 arduino stepper motor driver has a wide range power input, 9~42VDC power supply. And it is able to output 4A peak current, which is enough for the most of stepper motors.
The stepper driver supports speed and direction control. You can set its micro step and output current with 6 DIP switch. There are 7 kinds of micro steps (1, 2 / A, 2 / B, 4, 8, 16, 32) and 8 kinds of current control (0.5A, 1A, 1.5A, 2A, 2.5A, 2.8A, 3.0A, 3.5A) in all. And all signal terminals adopt high-speed optocoupler isolation, enhancing its anti-high-frequency interference ability.
As a professional device, it is able to drive 57, 42-type two-phase, four-phase, hybrid stepper motor.
Features
- 9V-40V DC power supply
- H-bridge bipolar constant phase flow driver
- The maximum output current is 4.0A (eight optional)
- Up to 32 segments of six kinds of sub-modes available
- Input signal high-speed photoelectric isolation
- Standard common anode single pulse interface
- Offline keep function
- Semi-enclosed chassis can adapt to a more demanding environment
- Provide energy saving semi-automatic current lock function
- Built-in thermal protection and over-current protection
Specifications
- Voltage: up to 50V
- ON resistance (upper lower) = 0.4 Ω
- Forward and reverse rotation control
- 5 kinds of sub-modes selectable (1/1, 1/2, 1/4, 1/8, 1/16 step)
- Output current: IOUT = 5.0A (peak within 100ms)
- Rated output: IOUT = 4.5 A
- Input pull-down resistor: 100 KΩ
- Current output alarm pin: Ialert = 1mA
- Monitor output pin (MO): Imo = 1mA
- With reset and enable pins
- With a standby function.
- Breaking the traditional single-supply
- Built-in thermal protection (TSD) circuit
- Built-in voltage protection (UVLO) circuit
- Built-in over current detection (ISD), the circuit
Note:
This driver is the upgraded version TB6600, heightening segment to 32 subdivision, suitable for high segmentation applications.
For step motor: 42, 57, 86 type 2 phase 4 phase (4 / 6 / 8 line)
What's in the box?
1 x TB6600 Stepper Motor Driver Controller
Resources
https://danielwilczak101.medium.com/control-a-stepper-motor-using-python-and-a-raspberry-pi-11f67d5a8d6d
https://www.instructables.com/Raspberry-Pi-Python-and-a-TB6600-Stepper-Motor-Dri/
Specifications
- Size: 40mm x 40mm x 10mm
- Voltage: DC 24V 0.1A
- Cable length: 200mm
- Application: For 3D Printer Ender-3
What's in the box?
1 x Creality 3D® cooling fan
Rocker Switches house a button for operation that can be pressed on either end like a seesaw to connect or disconnect an electrical circuit. They are often used as ON/OFF switches on the main power supplies for electronic devices.
Features
- Rating: 3A 250V
- Mounting hole: 20mm
- Poles: SPST
- Terminal: 2-Pin(ON-OFF)
- Contact resistance: ≤30mΩ
- Insulation resistance: ≥100MΩ at 500V DC
- Dielectric strength: 1500V AC for 1 minute
- Operating temperature: -25°C - 85°C
- Electrical life: 10000 cycles
- Color: black
What's in the box?
1 x Mini round black rocker switch
Resources
Introduction to Buttons and Switches
Types of buttons and switches
RFID module
MF522-AN module adopts Philips MFRC522 original reader circuit chip design, easy to use, low cost, suitable for equipment development, development of advanced applications such reader users, the need for RF card terminal design / production of the user. This module can be loaded directly into a variety of readers molds. Module uses voltage of 3.3V, through the SPI interface simple few lines can be directly connected to the user any CPU board communication module can guarantee stable and reliable work, reader distance;
Specifications
- Support: S50/S70 and other ISO14443A card
- Operating system: Windows 98/XP/2000/CE/7/ME/NT/LINUX
- Reading distance: 0-8 cm
- Reading speed: 0.2S
- Working temperature: -20 C - 85 C
- Working voltage: 5V
- Working current: 200mA
- Work instruction: LED, Beeps
What's in the box?
1 x USB reader
1 x USB cable
RFID is an acronym for “radio-frequency identification” and refers to a technology whereby digital data encoded in RFID tags or smart labels
Features
- Small and durable
- Waterproof, shockproof, anti-corrosive.
- Keyring for easy carrying.
Specifications
- Main Chip : Fudan F08 compatible S50
- Colour : Blue,Yellow, Black, Green, Red
- Size : Approx. 40.5×32×4.2mm
- Operating Frequency : 13.56 MHz
- Communication speed : 106K Boud
- Read and write distance : 2.5 ~ 10cm
- Read and write time : 1 ~ 2ms
- Operating Temperature : -20 ℃ ~ 85 ℃
- Endurance :> 100,000 times
- Storage capacity : 8Kbit, 16 partitions, each partition with 2 group passwords
Typical applications
Enterprise / campus access cards, parking, district management,attendance systems, patrol systems, enterprise systems, access control systems, radio frequency identification field etc.
What's in the box?
5 x 13.56MHz RFID tags
Please Note: Only for use with 2.5inch notebook HDD and SSD, not for use with 3.5 inch desktop HDD
Features
- Comply with serial ATA2.0 standards.
- Compatible with USB port (1.0,1.1 &2.0) & SATA Hard disk (1.5 GB/S & 3 GB/s).
- Added USB2.0 independent power supply interface, support 2.5 "high-capacity memory driver.
- Compatible with Windows 7 (32-bit/64-bit)/Vista (32-bit/64-bit)/XP (32-bit/64-bit)/server 2003 & 2008 (32-bit/64-bit) system A
Specifications
- Adapter SATA III USB 3.0 Cable External Hard Drive USB to Serial ATA 22pin Converter Hard Disk 6 Gbps for 2.5" HDD/SSD.
- This USB 3.0 to SATA Converter Cable connects any standard 2.5 inch SATA Hard Drive or Solid State Drive (SSD) to a computer through USB 3.0 ports. It's a ideal for you to backup files or upgrade your notebook hard driver.
- SATA 3 specification Support speed up to 6Gbps;
- Easy and quick access to external storage;
- LED activity indicator;
- Fully compatible with USB 3.0 and backwards compatible with USB 2.0/1.1;
- Plug and play,hot-swapping;
- Support Windows 98/2000/XP/Vista/7/8, Mac OS X.
What's in the box?
1 x Sata Cable for 2.5" SSD/HDD
Female Spade lugs provide a quick and reliable solderless electrical connection. These single conductor connectors are made to connect with a predefined connector size or male quick connects.
Specifications
Conductor cross section: 0.5-1.5 mm2
What's in the box?
1 x pack of 10 lugs
You will find our lugs selection here
Example using the white LED filament on a breadboard
Specifications
Voltage : DC3V
Current : 50mA
Colour : As per Product Name
Length : 38mm
What's in the box?
5 x 38mm LED filament
You might also need...
If you do not already have a power supply you can use one of the below in order to power your LED
3V 2xAA Transparent Battery Box with Crocodile Clips and Switch
OR
3V 2xAA Black Battery Box with Crocodile Clips and Switch
You will find our selection of batteries here
Q&A
1. Does the LED flexible filament need a heatsink?
The LED filament does not need a heatsink. The LED uses a current of ≤10mA, and does not require heat dissipation.
2. Can the LED flexible filament be powered with an 18650 battery (DC3.7V)?
No, the LED filament voltage is standard DC3V.
If you use DC3.7V, the voltage is too high and the filament temperature will be very high, which will burn out the lamp beads.
3. Where is the LED flexible filament used?
Generally used in light bulbs, DIY hand-made toys, DIY decoration designs and home projects.
4. Can the flexible LED filament bend 90 degrees?
No. Maximum bending angle of LED filament≥30°
5. Can the flexible LED filament be freely cut to length?
No. If it is cut, it will not light up.
6. Can the length of the LED flexible filament be customized according to customer requirements?
No. The length is fixed.
7. Can LED flexible filament work in water?
No. But you can DIY by yourself and put the LED filament in a sealed transparent plastic tube to make it work in water.
8. What is the CRI of the LED flexible filament?
CRI≥80
9.What is the maximum current of the 38mm LED flexible filaments?
maximum current must be ≤50mA
10. How do I light up the LED flexible filament?
Connect two AA batteries in series = 3V to light up the filament. Or use a 3V button battery CR2032. You will find what you need in our battery and enclosure collections.
The PBS-11B 2PIN 12mm No Lock Momentary Push Button is a high-quality and reliable button that is perfect for a variety of applications. With its sleek black base and red button, this button is both stylish and functional. It is a momentary switch, which means it only stays on for as long as it is being pressed, making it ideal for applications where you need a temporary connection.
This button is capable of handling up to 3A and 150V, which means it can handle a wide range of electrical loads. Its durable construction ensures that it will last for a long time, even in demanding environments.
Whether you're working on a DIY project or need a replacement button for an existing piece of equipment, the PBS-11B 2PIN 12mm No Lock Momentary Push Button is the perfect choice. Its simple design and easy installation make it a great option for both beginners and professionals alike.
Whats in the box?
1 x Momentary Push Button
Resources
Specifications
- 0.8 mm diameter
- Net weight: 50g (appox.) net weight
- Rosin core
- 63% purity
- Great For Electronics and Electrical Wiring
What's in the box?
1 x solder roll
Resources
Introduction to soldering
Video: How to solder properly
The secrets to good soldering