A diode is an electronic component that allows current to pass in one direction and blocks the current flow in the other direction. This phenomenon was discovered in 1874 by Ferdinand Braun at point contacts on lead sulfide. The term diode is usually applied for semiconductor diodes that operate with a P-N junction or a rectifying metal-semiconductor junction. In semiconductor technology, the term diode refers only to silicon diodes with a P-N junction, while other variants are identified by name with suffixes, for example Schottky diode or germanium diode. Diodes are used for rectification, the conversion of alternating voltage to direct voltage. In addition, the semiconductor junction has other useful properties which are exploited in Zener, photo and light-emitting diodes and semiconductor detectors. Diodes are the components, which are essential in the workshop of every electronics passionate and professional. In Botland store we have prepared a wide range of products, where everyone can find what they are looking for.
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Minicomputers
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Raspberry Pi
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Raspberry Pi 4
- Raspberry Pi 4B modules and kits
- Raspberry Pi 4B casings
- Raspberry Pi 4B power supply
- Raspberry Pi 4B memory cards
- Raspberry Pi 4B audio & video cables
- Raspberry Pi 4B displays
- Raspberry Pi 4B GPIO extensions and HAT
- Raspberry Pi 4B cameras
- Raspberry Pi 4B mounting elements
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- Raspberry Pi 400
- Raspberry Pi Zero
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Raspberry Pi 3
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Raspberry Pi 3B+
- Raspberry Pi 3B+ modules and kits
- Raspberry Pi 3B+ casings
- Raspberry Pi 3B+ power supply
- Raspberry Pi 3B+ memory cards
- Raspberry Pi 3B+ video & audio cables
- Raspberry Pi 3B+ displays
- Raspberry Pi 3B+ cameras
- Raspberry Pi 3B+ GPIO extensions and HAT
- Raspberry Pi 3B+ mounting elements
- Raspberry Pi 3B+ accessories
- Raspberry Pi 3B
- Raspberry Pi 3A+
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Raspberry Pi 3B+
- Raspberry Pi CM
- Raspberry Pi accessories
- Gaming Pi - consoles
- Raspberry Pi 2B+
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Raspberry Pi 4
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Raspberry PiIn this category you will find both the latest Raspberry Pi 4B minicomputers, as well as all the necessary additions with compatible accessories.
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Arduino
- Arduino - main modules
- Arduino starter kits
- Arduino Shield - extension
- Arduino books
- Arduino sensors
- Arduino casings
- Arduino power supply
- Arduino - prototyping accessories
- ArduCam - cameras for Arduino
- Arduino displays
- Arduino - communication modules
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BestsellerArduino is an Italian programming platform with I/O support and standard programming language. Systems are based on microcontrollers.
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bbcThe BBC's Micro:bit education platform is a particularly popular in UK. Offers minicomputers, modules and accessories for learning and teaching programming.
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odroidSeries of South Korean single board computers and tablets. Many of them can be operated not only with Android, but also with Linux distributions.
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m5stackM5Stack sandwich modules received recognition among Japanese customers. They offer freedom of choice in terms of combining them into systems with selected functions.
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STM32 modules
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stm32Similar to Arduino, but... different. Often used at higher education institutions, STM32 are microcontrollers with high computing performance.
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Arduino
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avrAVR microcontrollers are a combination of microprocessors with components into integrated circuits. AVR family includes expansion modules, programmers and books on programming.
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Friendly ARM
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nanopiMicrocomputers equipped with numerous communication interfaces and peripheral modules. One of the most diverse families of single-board computers.
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infoThanks to the appearance of many single board platforms dedicated to amateurs and hobbyists, minicomputers have become popular among enthusiasts of robotics and electronics. Check out other models available in Botland.
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Electronics
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Consumer electronics
- Animal repellers
- Automobile accessories
- Cameras and recorders
- Computer accessories
- LED lighting
- Memory cards & disks
- Smartwatches
- Sound and acoustics
- Tablets and smartphones
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Elektronika użytkowaThe whole range of devices and components related to electronics including accessories and elements of electronic circuits.
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Semiconductors
- AVR Microcontrollers
- Buzzers - sound generators
- Integrated circuits
- Microphones and sound detection
- MP3 / WAV / OGG
- Programators
- Transistors
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Mechanical parts
- Cases, casings
- Clamps
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Connectors
- 230 V network sockets
- Amphenol FCI connectors
- ARK connectors
- Banana connectors
- BLS connectors
- BNC connectors
- Connectors - 4-pin
- Connectors - FSF / FPC ZIF
- Connectors - goldpin
- Connectors - raster 2.5 mm
- Connectors - raster 2.54 mm
- Crocodile cables
- D-SUB connectors
- DC plugs and sockets
- Electric cubes
- IDC connectors
- Jumpers
- Mounting connectors
- Pogo Pin
- Quick couplings
- RJ network connectors
- Slip connectors
- SMA connectors
- USB connectors
- Wire tips
- Installation boxes
- Organizers for wires
- Prototype boards
- Self-adhesive feet
- Shrink tubes
- Standoffs
- Switches and buttons
- Wires
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Sensors
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Grove
- Grove - starter kits
- Grove - base hats
- Grove - accelerometers and gyroscopes
- Grove - gas & dust sensors
- Grove - distance sensors
- Grove - temperature sensors
- Grove - light and colour sensors
- Grove - converters
- Grove - communication modules
- Grove - relays
- Grove - buttons, keys and joysticks
- Grove - motor drivers
- Grove - displays
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tekstGrove series modules from Seeed Studio - more than 150 different modules with a simple interface, including adapters to ensure compatibility with Arduino and Raspberry Pi.
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Other sensors
- Current sensors
- Fingerprint readers
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Gravity modules
- Gravity - accelerometers and gyroscopes
- Gravity - actuators
- Gravity - base hats
- Gravity - buttons, keys and joysticks
- Gravity - cables
- Gravity - communication modules
- Gravity - converters
- Gravity - current sensors
- Gravity - displays
- Gravity - distance sensors
- Gravity - encoders and potentiometers
- Gravity - force sensors and limit switches
- Gravity - gas & dust sensors
- Gravity - LED
- Gravity - light and colour sensors
- Gravity - medical sensors
- Gravity - relays
- Gravity - sound modules
- Gravity - starter kits
- Gravity - temperature sensors
- Sensor sets
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Robots and mechanics
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robotyReady-to-use robots and all accessories, components and sub-assemblies necessary to create your own robot or robotic arm.
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Accessories for robots
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Tools and Power
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akumulatoryEveryting for robotic, electronic and mechanic workshop, home DIY enthusiasts and all those who need power supplies.
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Education
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tekstFORBOT online and paper courses are great introduction to the vast world of electronics. Discover their possibilities and educational value.
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Educational robots
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Educational robots
- JIMU
- Photon
- MakeBlock
- Abilix Krypton
- Waveshare - educational robots
- Wonder Dash and Dot
- Ozobot
- Lego Mindstorms & WeDo
- Edison
- TinkerGen
- Microduino
- Robobloq
- Ohbot
- Clementoni
- Genibot
- LittleBits
- WowWee
- RoboRobo
- Wheeled educational robots
- Crawler educational robots
- Interactive educational robots
- Solar educational robots
- Robotic dogs
- Toy robots
- Advanced robots
- Educational toys
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Educational robots
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Smart Home
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BleboxIn the category "BleBox - Home Automation" you'll find a wide range of home automation devices from the renowned manufacturer BleBox.
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BroadlinkIn the category "Broadlink - Home Automation" you will find ready-to-use devices to turn any ordinary home into an intelligent building.
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EuratechIn the "Eura Tech - home automation" category you will find a large selection of devices intended for use in the home automation system.
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FibaroFibaro - home automation. In this category you can find elements of Fibaro home automation system.
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ShellyAlthough it is possible to develop your own network of devices and sensors, it is much faster to use ready-made drivers - e.g. Shelly modules available in our store.
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SonOffThis category includes Sonoff products - intelligent WiFi controllers.
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Android Box - Smart TVAndroid Box is a solution that allows you to use multimedia functions on your TV even in the absence of adequate equipment.
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AssistantsVoice assistants provide speech connection to the entire home automation system.
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Other automation systems
- iNode - sensors and modules Bluetooth Android
- Inveo controllers
- BBMagic Bluetooth automation
- Tinycontrol controllers
- Neo home automation
- Zamel Supla home automation
- Z-wave executive modules
- Exta Life - sensors and modules
- Exta Free - sensors and modules
- USB Numato Lab GPIO drivers
- AST lighting drivers
- Coolseer home automation
- Tuya home automation
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3D print
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druk 3d3D printing, in which objects are created layer by layer. Allows to create objects at home, but also has industrial and medical applications.
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FilamentFilament for a 3D printer is the basic purchase right after purchasing the printer itself.
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Accessories for 3D printersLike any machine, a 3D printer sometimes requires the replacement of the most heavily used elements, including nozzles or heaters.
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3D printing pensThe 3D pens let your imagination run wild while sketching in three dimensions.
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Laser cutting machineDevices that allow you to cut or engrave various types of materials, incl. in wood, leather, plastic, aluminum.
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3D scanners3D scanners are devices that can analyze the shape of an object. Data from scanners can be used in spatial modeling.
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Laser headsThanks to laser heads, you can engrave even the most complex patterns on various types of surfaces, e.g. leather, wood, textiles.
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CNC milling machinesToday, numerically controlled milling machines are the backbone of the manufacturing industry.
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2D printers and pens2D printers and pens will find their application in many areas, including in marking packaging, construction elements and pharmaceutical products.
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Others
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Opis kategoriiGift vouchers in Botland store is a perfect option for everyone who is looking for a nice and practical gift.
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InterestingA category in which we have collected various items, professional accessories as well as miscellaneous gadgets.
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GadgetsKeychains, mugs, mouse pads and other elements with technical motifs
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New products
Promotion products
Cable wstążkowy TLWY - 10x0,22mm2/24 AWG - multicolor - 50m
- Free shipping
- Reduced price
- On sale
Wonder - set of 3 accessories for Dash and Dot robots
- Free shipping
- Reduced price
- On sale
micro: IoT - expansion board for BBC micro:bit IoT - DFRobot MBT0012
- Free shipping
- Reduced price
- On sale
The MagPi - the official RaspberryPi magazine - No. 01/2018 Issue 65
- Free shipping
- Reduced price
- On sale
- Free shipping
- Reduced price
- On sale
MakeBlock 60122 - beam 0824-496 - blue - 2 pieces
- Free shipping
- Reduced price
- On sale
Diodes
Bare Conductive Light Up Board - LED lamp with dimming function + proximity sensor
Light Up Board is a module of the capacitive, touch, dimmed and contactless light on a round printed circuit board with six white LEDs. The device can operate in one of the...- Free shipping
Set of SMD1206, SMD0805, SMD0603 LEDs - 90pcs
Set of 10 pieces of green, yellow and red diodes.- Free shipping
LED Green and yellow in holder
Set of two LEDs with a diameter of 3 mm in the dedicated holder.- Free shipping
- Free shipping
PicoBuck - 3x LED driver - 36V/330mA - SparkFun COM-13705
PicoBuck driver allows you to control three different LEDs on three different channels. The power of the LEDs can be adjusted by changing the voltage or through the cycle of...- Free shipping
Module with addressed RGB LED WS2811
Module with digital addressed diode RGB WS2811 with outputs with the raster of 2.54 mm, for mounting of goldpin connectors (included). It allows you to get any color with a...- Free shipping
LED RGB WS2811 - IP65 60LED/m, 14,4W/m, 12V - 5m - black
Individually addressed RGB LEDs located in a 5 m strip with a density of 60 diodes per meter. Each pixel consists of three RGB LEDs and can emit a color from 24-bit palette. To...- Free shipping
LP55231 - LED driver with 3 RGB diodes - SparkFun BOB-13884
The module is equipped with 3 RGB LEDs that can be controlled via the I2C bus. Built-in driver LP55231 provides work without an assistance of an external controller. Board...- Free shipping
Pixel chain - 50x LED 5mm blue
50 bright LEDs in blue color united in one chain. Each pixel has a diameter of 5 mm, protected by a silicone case, IP65.- Free shipping
Lumenati 90R - 3x LED RGB APA102C - digital, addressable - SparkFun COM-14358
Plate in the form of a bow bent at an angle of 90 ° with 3 LED RGB APA102C. It is supplied by a voltage of 5 V. The boards can be combined with other board from Lumenati.- Free shipping
- Reduced price
- On sale
Lumenati strip 8x LED RGB APA102C - digital, addressed - SparkFun COM-14359
Strip with 8 addressed RGB LEDs APA102C. It is supplied by a voltage of 5 V. The board can be combined with other boards from Lumenati.- Free shipping
- Reduced price
- On sale
Lumenati 3x3 LED RGB APA102C - digital, addressable - SparkFun COM-14360
Board with 9 addressed RGB LEDs APA102C. It is supplied by a voltage of 5 V. The board can be combined with other boards from Lumenati.- Free shipping
Historical Diode
The first device capable of letting electric current pass in one direction while blocking it in the other, was discovered in 1874 by Karl Ferdinand Braun with a galena crystal. At the beginning of the 20th century, copper oxide or selenium rectifiers were used to convert alternating current to direct current. This use applied through most of the century to charging batteries. In 1901, Peter Cooper Hewitt invented the mercury vapor rectifier, which was used for power applications until the 1970s. At the same time, seeking to improve the detection of radio waves, John Fleming developed the first electron tube (the vacuum diode), whose heated cathode emits electrons that the anode can pick up, while the opposite is not possible. The germanium or silicon semiconductor diode replaced vacuum tubes after World War II. The development of semiconductors has led to the creation of many varieties of diodes, exploiting the characteristics of the P-N junction, or, in the case of light-emitting diodes, the ancillary properties of the material.
Diode - the simplest semiconductor device
Despite its simple operation, the diode is a very useful component. Its primary function is to pass current in one direction only, while blocking it in the opposite direction. This phenomenon is called barrier polarization. Diodes are divided into different types, from the simplest to the most complicated devices. Advanced diodes work on the principle of non-linear current-voltage characteristics, which means that they can do more than just control the flow of current. It is also worth remembering that semiconductor diodes conduct electrical current when you exceed a threshold voltage in the direction of conductivity. Only temperature can affect the voltage drop of a diode, so this effect is used to measure it. In our offer we have prepared many diodes, which can meet the requirements of both professionals and amateurs. If in doubt, please contact our technical department, who will happily advise you on choosing the right product.
Different types of diodes
There are several types of diodes for different applications.
- Light-emitting Diode (LED) light: This is one of the most popular type of diodes. This diode allows the transfer of electric current between the electrodes which produces light. The color of the light depends on the band gap of the semiconductor.
- Avalanche Diode: This type of diode operates in reverse bias and applies avalanche effect for its operation. The avalanche diode is generally used for photodetection, where high levels of sensitivity can be achieved by the avalanche process.
- Laser Diode: This type of diode is different from the LED type because it produces coherent light. These diodes are used in DVD and CD players and laser pointers.
- Schottky Diodes: These diodes have lower forward voltage drop compared to ordinary silicon diodes with PN junction. The voltage drop can be somewhere between 0.15 and 0.4 volts at low currents, compared to 0.6 volts for a silicon diode.
- Zener Diode: This type of diode provides a stable reference voltage, therefore is very useful and in large quantities. The diode works in reverse bias and fails on the arrival of a certain voltage.