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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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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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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
Advanced Kit with Raspberry Pi Pico
Raspberry Pi Pico - RP2040 ARM Cortex M0+ - with headers
Set of male connectors for Raspberry Pi Pico - 2x 1x20...
Royal Resin Crystal epoxy resin dye - pearl liquid - 15...
Royal Resin Crystal epoxy resin dye - pearl liquid - 15...
Barwnik perłowy w płynie 10 ml - Royal Resin Crystal...
Limit switch 50mm - Pololu 1403
Promotion products
Creality CR-X kit of spare parts
Romeo Quad BLE - Bluetooth 4.0 + driver DRV8833 engines
Smart ceiling LED lamp with WiFi - TD25
Portable Hard Drive Verbatim 3.0 - 1TB
ACKmeMackerel - SparkFun WRL-13122
Router Tenda FH456 Wireless-N 300Mbps
Pi-Top Pulse - LED matrix, speaker, microphone - overlay...
Car Charger - 12V/2,8A - Vorel 82550
Pi Desktop - starter kit for Raspberry Pi 3/2
HB100 - Microwave Motion Sensor
EVA case for RF Explorer spectrum analyzer - 3G Combo
Case for Asus Tinker Board - open with fan
Comparators
Analog Comparator LM339 - THT - 5pcs
Power supply 36 Volt or +/-18 V. DIP14 Case. Set of 5 pcs.Low-Power LM393P dual-channel comparator - THT DIP8 - 5pcs
Comparator LM393 with supply voltage from 2 V to 36 V. The response time is 300 ns. 5 units are included.LM311P single-channel comparator
Comparator LM311 powered by voltage from 3.5 to 30 V. Time of distribution is 115 ns.Comparator – automatic comparison of the input and output voltage
The main purpose of the comparator circuit is to compare two input voltages with each other. At the output of the circuit, it is to give high status (supply voltage) or low status (ground voltage) or negative supply voltage in the case of a symmetrically powered element. In the vast majority of cases, dedicated integrated circuits are used to implement comparators. The gain of the system is very important, which is high so even with the smallest voltage difference the output will be saturated. There are two outcomes to keep in mind. If the voltage at the non-inverting input is greater, the output will be high voltage. On the other hand, if a higher voltage appears at the inverting input, then a low state will be present at the output of the system.
Understanding the above rules, how the comparator works, allows you to know which of the inputs is higher and why. They use comparators, we don't need to know the exact voltage values anymore. What is most important is the result of the voltage comparison made automatically for us by this useful electronic device - the comparator!
Feedback loop and hysteresis in the comparator
The high gain in the comparator circuit usually makes it more susceptible to noise and to hum. Therefore, in a situation where the difference between the input signals is less than the peak-to-peak voltage of the noise present in the input signal, we can experience the bastard of the output signal. This will be due to the rapid changes from high to low and vice versa that occur. This situation is undesirable and problematic. However, there is a solution to this problem.
Currently manufactured comparators have a built-in feedback loop. Thanks to this solution, a phenomenon called hysteresis is obtained. It consists in an uneven behavior of the system in a situation when the voltage difference increases or decreases. The current state of the circuit at a given moment depends on the state of the circuit at the previous moment. Due to the hysteresis phenomenon, the comparator with the feedback loop switches to the high state only when the rising voltage at the input 'gives way' to the reference voltage. Similarly, it works in the opposite situation - the low voltage condition at the output appears only when the voltage drops below the reference voltage.
Why do we use comparators? Few simple examples
Comparators are very practical tools. As we’ve mentioned earlier, they can be easily transformed into simple thermostats. Obviously, this is just an additional function, as these devices are primarily used in various electronic systems.
They are used in control and steering systems to stabilize physical parameters such as temperature, engine speed and lighting intensity. In addition, we can find comparators in various power supply systems and amplifiers. It can be used as an analog-to-digital converter, as well as a generator (after connecting the comparator with the appropriate RC circuit). Due to the use of a feedback loop with a comparator, such a system can operate stably, being extremely resistant to noise and interference in input signals.
If you are looking for reliable comparators and other electronic devices, you are in the right place! Check out all our products and if you need just contact us!