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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
- Raspberry Pi 4B USB accessories
- 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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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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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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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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button
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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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button
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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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button
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FibaroFibaro - home automation. In this category you can find elements of Fibaro home automation system.
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button
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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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button
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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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button
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AssistantsVoice assistants provide speech connection to the entire home automation system.
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button
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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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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
AMG8833 Grid-EYE - IR temperature sensor - Adafruit 3538
PyPortal - 3.2 '' TFT touch display 320x240px -...
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ETap 12'' liquid level sensor - Adafruit 464
Limit switch 50mm - Pololu 1403
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Case for Raspberry Pi 4B - KKSB aluminum - grey
Bluetooth speaker Blow BT950 Bazooka - 30W
Pololu 1416 - set of tracked wheels 30T
Raspberry Pi and 10,1" screen case - HDMI and USB
WiFi LPB100-A module with PCB antenna - Waveshare 8877
The MagPi - the official RaspberryPi magazine - No....
Magnetometer GY-273 3-axis digital I2C 3.3V / 5V -...
Arduino Mega ADK Android Rev3
„3D Printer Kit for uArm Swift Pro
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Operational amplifiers
The popularity of an operational amplifier as a structural element in analog circuits is due to the versatility of this device. The operational amplifiers work in such a way that they use negative feedback. As a result of changing the characteristics of the op amp's feedback loop circuit, its parameters such as gain, input and output impedance, bandwidth can be changed. These parameters are determined by external components and depend only slightly on temperature coefficients or design tolerances in the op-amp itself. Due to this fact, these elements are very versatile and are willingly used by many designers of electronic, robotic and automatic systems. Op-amps come in handy when you're working on intermediate to advanced DIY electronic projects and more.
LM741C (UA741C) - Operational Amplifier - 5pcs
Single operational amplifier in DIP case. Set of 5 pcs.Operational amplifier NE5532 - 5pcs
Single operational amplifier in DIP case. Items are sold in sets of 5 pieces.Operational amplifier LM358P/N - 5 pcs.
Single operational amplifier in DIP case. Supply voltage ranging from 3 V to 32 V.Below we present all the operational amplifiers available in the Botland online store. Now choose the right device for you and your project, and if you have any questions - contact us!
Operational amplifier – a versatile device for building analog circuits
An operational amplifier is a multi-stage DC differential amplifier. The main feature of this device is that it uses a differential voltage gain. Most often, such devices are designed to work with an external feedback circuit, which determines the main properties of the entire system.
The use of operational amplifiers as circuit blocks greatly simplifies their construction, regardless of whether the amplifiers used are integrated circuits or are composed of discrete elements. Therefore, generally speaking, an operational amplifier can be treated as if it were an ideal differential amplifier and system design becomes truly hassle-free. Only at a later stage in the design is the allowable range of parameters for each operational amplifier selected. This type of approach allows not only to simplify the device design process, but also to simplify its modeling at the stage of prototype creation.
How do operational amplifiers work and what are they for?
In order to explain how operational amplifiers work, some simplifying will be more than needed. It can be said that an operational amplifier is a voltage amplifier with a differential input, which is DC coupled. In this case, the input consists of two signals - positive, non-inverting, and negative, inverting.
In turn, the output voltage is asymmetric and equal to the difference between the non-inverting and the inverting inputs, amplified by A-fold (where A is the gain of the element in open loop). This parameter is high for most operational amplifiers and is often 100,000 or more. Operational amplifiers are advanced devices that are unlikely to be used for simple electronic design models. These systems can also operate in closed loop feedback. By introducing appropriate elements into the loop circuit, it is possible to obtain systems with lower gain, non-linear elements.
Typical operational amplifiers circuits
A closed-loop operational amplifier can generally operate in two configurations. The first variant is to work as a non-inverting amplifier with a signal fed to the non-inverting input, i.e. with a plus. The second variant is to work as an inverting amplifier and in this case we deal with a signal fed to the inverting input, i.e. with a minus.
The gain of such a system depends on many elements of the feedback loop. In the first case it is positive and in the second it is negative, which causes a phase shift of the signal by 180 degrees (complete inversion). If elements such as capacitors or coils are included in the feedback loop, it becomes possible to modify the frequency response of the loop. As a result, the work of the entire amplifier will be modified. Such activities then allow the construction of active filters with the use of operational amplifiers. In addition, there are specialized circuits of operational amplifiers, such as differentiating and integrating circuits, adders and others.
Operational amplifiers are advanced electronic devices. In Botland you can buy such an amplifier with the guarantee that it will be a safe and functional product. However, if you need help with the election or have any questions - please do not hesitate to contact us!