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BBC Micro:bit board v2
BBC Micro:bit board v2

BBC Micro:bit is well known in Croatia due to Croatian Makers project. Soldered is on its way to become the official distributor for Micro:bit in Croatia.

For those who are not familiar, micro:bit is small microcontroller board accompanied with bunch of sensors which makes learning programming logic easier, especially for kids. There are more than a few visual programming tools for this board which make programming really simple. It is programmed via USB port and besides sensors, it has 2 pushbuttons and 5×5 LED matrix display onboard.

Dasduino CORE (ATmega328)
Dasduino CORE (ATmega328)

Are you looking to start tinkering with electronics and Arduinos? Or perhaps you’re looking for a board to help you with electronic projects? Dasduino Core is the right choice for you. If you’re familiar with any of the retired Croduino products, you’ll feel right at home with this board. If not, no worries! Dasduino Core is made for makers of all skill levels! Not only will it execute the tasks in a breeze, but it will take up little space while doing so.

With just 63 mm wide and 22 mm high, Dasduino Core packs 22 I/O pins. It has 14 digital and 8 analog pins, which is plenty for almost all projects. It comes with a USB Type-C connection and is 100% compatible with the original Arduino boards and Arduino IDE. It comes with the Atmel Atmega328P microcontroller we all know and love. It works on 5V or battery voltage. There is also a 3.3V voltage regulator on the board for easy powering of 3.3V breakouts or easyC boards. Furthermore, it features Lithium-ion battery charger and connector, and a full color WS2812 RGB LED. An easyC connector will make connecting the Dasduino Core with other devices effortless.

 

 

Dasduino CORE (ATmega328) options:

 

The Dasduino CORE comes in 3 versions depending on the method of establishing a connection to the pins:

– without headers
– with male headers
– with female headers

Stop Me game Solder kit
Stop Me game Solder kit

If you are looking for a simple way to learn soldering, or just want to make a small gadget that you can carry, this set is a great opportunity. Stop me game is an educational kit which teaches you how to solder, and in the end, you get to have your own small game. The LEDs go up and down, and your goal is to press the button as soon as the green LED turns on. With every correct answer, the game gets a bit harder – the time you have to press the button shortens. How many correct answers can you get?

 

It’s based on Attiny404 microcontroller, programmed in Arduino. At its back, you’ll find CR2032 battery which makes the kit portable. There’s keychain holder as well. Soldering process is easy enough based on the mark on the PCB.

 

The kit consists of:
• PCB
• Attiny404 microcontroller
• 7 LEDs
• A pushbutton
• A switch
• 7 resistors 330ohm
• CR2032 battery holder
• Battery CR2032
• Keychain holder

Simple soil humidity sensor
Simple soil humidity sensor

How many times have you watered your plants and feared you’re overdoing it? With the simple soil humidity sensor, those worries are a thing of the past! This two-part sensor is straightforward to use. The two exposed prongs go into the soil and send the humidity information to the sensor via the connected wire. The more water is in the ground, the better the results will be.

The two pieces are connected with the provided JST-SH 2-pin cable. The sensor uses the LM393 differential comparator. The main benefit of this board is ability to give analog and digital output. By setting the potentiometer on the board, you are able to get digital signal at the DO pin when signal crosses certain value, while analog values will be present on the AO pin at all times.

Voltage & current sensor INA219 breakout
Voltage & current sensor INA219 breakout

The INA219 is a digital device that allows the measurement of current, voltage, and therefore power. Simply, connect wire serial through this device and it will give all the information provided via I2C communication. It is very simple and reliable to use. It has a jumper for making changes to the I2C address so you can connect more than one INA219 to single microcontroller.

The maximum current of the measurement is determined by the shunt resistor found on the plate which is 0.1ohm (± 3.2A). Yes, it can measure the power in both directions! If you want to measure other currents or smaller currents more precisely, check out the datasheet to change that resistor. The maximum voltage that can be measured is 26V.

Color and gesture sensor APDS-9960 breakout
Color and gesture sensor APDS-9960 breakout

The APDS-9960 is a small sensor that measures four things at once. It recognizes the movements you make in front of it (up, down, left, right) and it can identify the proximity of the object, so you have two more movements: to the sensor and from the sensor. In addition, it has an ambient light sensor and a color sensor which gives red, green, and blue (RGB) colors as output. This sensor with many features was even built into the Samsung Galaxy S5 smartphone.

All gestures are detected at a distance of 10 to 20 cm and it has built-in UV and IR filters to make sure it won’t be confused by other sources of light. Connected using well-known I2C communication.

Logic level converter board
Logic level converter board

This logic level converter board module gives us a translation of logic level between two signals. In layman’s terms, if we take a signal with logical “unit” on 5V convert into a signal which logical “unit” has on 3.3V this module will help us. Something like this is useful in this case if we want to achieve communication between two devices from whom one works on 5V and the other on 3.3V, or any other combination of voltages. Directly connecting we would “burn” a device that works on 3.3V and a module gives us to avoid that.

 

Max. voltage: 30V
• Number of channels: 4
Dimensions: 22 x 22mm

Li-ion charger with protection
Li-ion charger with protection

Lithium batteries are charged differently than regular batteries and devices. You’ll need a li-ion charger like this one to charge them. Integrated with the CC/CV charging technology, it is the simplest way to charge a lithium-ion battery.

The board has a USB Type-C connector for power, a JST-type connector for batteries, the charging circuit, a protector, and two status LEDs. Comes with 7 pins that need to be soldered.

 

Product usage tips:

The red LED glowing means the battery is charging. The green LED glowing means it finished charging. Easy embedding into a project with the four mounting holes on the board.

 

Note: This charger has protection against short-circuit, too high, or too low voltage. It has no protection against reverse polarity.

Dasduino LITE (ATTiny1604)
Dasduino LITE (ATTiny1604)

Dasduino Lite is the right choice when you are limited with space, but still looking for capable controller. Based on Attiny1604, with USB-C port, Li-ion charger and CH340 USB-UART converter, it has all must-haves on a small form-factor.

Only 38mm wide and 26mm high, Dasduino Lite contains 12 GPIO pins. Of these, 9 can be programmed as analog. It comes with a USB Type-C connection and is 100% compatible with the original Arduino IDE software using  custom Board Definition. In addition to its small dimensions, which are the main characteristic of this Dasduino, there is also a charger for a lithium battery, a full RGB LED and an easyC connector that will allow easy connection of the Dasduino Lite board with other devices. This Dasduino is extremely handy when you need to make a project that needs to take up as little space as possible.

 

 

Dasduino LITE (ATTiny1604) options:

 

The Dasduino LITE comes in 3 versions depending on the method of establishing a connection to the pins:

– without headers
– with male headers
– with female headers

Digital multimeter
Digital multimeter

The multimeter, along with the soldering iron, is the basic tool of every electronics engineer. If you are a beginner, this multimeter will be enough for you to learn to measure various physical quantities related to electronics. Measure AC and DC voltage, AC and DC current, resistance, transistor gain, test diodes and conductivity – all with this multimeter. It comes with test cables, and you’ll only need 2 AAA batteries to get started. It also has a fuse to measure current, as a safety supplement.

If you are looking for a best buy multimeter for your workshop, to work for years (probably centuries) and give reliable readings, you have found it. The multimeter does not have automatic range detection, no backlight or frequency measurement, but it will measure DC voltage up to 1000V, AC voltage up to 750V, DC current up to 10A, capacity up to 100uF, resistance up to 200Mohm. It has a buzzer to conduct conductivity and it has an automatic shut-off.

 

• DC voltage measuring ranges: 200mV, 2V, 20V, 200V, 1000V
• AC voltage measuring ranges: 200mV, 2V, 20V, 200V, 750V
• DC current measurement ranges: 2mA, 20mA, 200mA, 10A
Capacity measurement areas: 20nF, 200nF, 2uF, 20uF, 200uF
• Resistance measurement areas: 200ohm, 2000ohm, 20kohm, 200kohm, 2Mohm, 20Mohm, 200Mohm
• Dimensions: 190 x 90mm

LoRa 868MHz antenna 200mm
LoRa 868MHz antenna 200mm

This antenna is designed for LoRa modules based on 868MHz frequency (Europe).

 

Frequency range: 868MHz (Europe)
Impedance: 50ohm
• Lenght: 200mm
• Connector type: SMA male

ESP32-WROOM-32D WiFi module
ESP32-WROOM-32D WiFi module

The ESP32 is a more advanced successor to the well-known ESP8266. It is a SoC (System on Chip) that can function as a standalone microcontroller and has everything you need on WiFi and Bluetooth 4.0 (BLE 4.0, low-energy) communication. With nearly 30 I / O pins and low power consumption, ESP32 will almost certainly be the leader in the Internet of Things for years to come.

The microcontroller itself works at a frequency of 160MHz (up to 240MHz), while the module has a built-in flash memory of 4MB. It has all the classic protocols like 4x SPI, 2x I2C, 4x UART, and there are many built-in peripherals like 18x 12-bit ADC, 2x 8-bit DAC, 10x capacitive touch GPIO, temperature sensor, SD card controller, Ethernet interface, PWM, etc. The list is really long. It should not be forgotten that this module has FCC certification and PCB trace antenna.

 

SoC: ESP32
CPU: Xtens 32-bit LX6, 160MHz to 240MHz
• Flash memory: 4MB
• RAM memory: 520kB
Exact module name: ESP-WROOM-32
• Number of pins: 38
Dimensions: 18 x 25.5 x 2.8 cm

DC motor 15RPM
DC motor 15RPM

DC motors can be inconvenient to use on low speed. With the help of mechanic and transfer using sprockets speed of this motor is slowed to a remarkably small speed. It is used for precise control over many mechanisms from robot wheels to precise mechanics.

 

• Voltage: 3V
• Axle diameter: 3mm
• Dimensions
: 12mm x 10mm x 36mm

RDM6300 RFID 125kHz reader
RDM6300 RFID 125kHz reader

RFID readers come in many shapes and varieties, one of them – the RDM6300 – operates at 125kHz and comes with an external antenna that can be attached to the case, while the rest of the board is inside the case. Communication is serial (UART), which makes it easy to connect.

If you order additional cards / tags with this reader, make sure you use the ones that work at 125 kHz, which is compatible with this reader!

 

• RDM6300
• Frequency: 125kHz
• Reading distance: 2-5 cm
• Communication: serial
• Voltage: 5V
• Dimensions: 3.8 x 1.8 x 1.2cm

Out of stock Bluetooth module HM-10 (BLE 4.0)
Bluetooth module HM-10 (BLE 4.0)

Bluetooth Module HM-10 enables Bluetooth 4.0 (BLE 4.0) communication between your project and another Bluetooth device, such as mobile phone. A connection with Croduino is simple via serial communication and the module operates at standard voltage of 3.3V and 5V. This module will work with iOS6 and higher systems as well as with Android 4.3 and greater.

Bluetooth standard: 4.0
• works with iOS6 or higher and  Android 4.3 or higher
Voltage: 3V – 6V
• Current: 60uA – 400uA
• Antenna: on the PCB
Dimensions: 43mm x 16mm

Servo motor TowerPro MG995, 360 degrees
Servo motor TowerPro MG995, 360 degrees

MG995 is a powerful servo motor that is capable of spinning and controlling things that a small hobby servo motor could never accomplish doing. It comes with a bunch of accessories so you could connect it easily with the outer world, and it’s being controlled like every other servo motor, via PWM.

• RPM: 0.20s/60 degrees(4.8V), 0.16s/60 degrees(6V)

• Voltage: 4.8V – 6.6V

• Torque: 9.4kg/cm(4.8V) – 11kg/cm(6V)

• Angle: 360 degrees

• Dimensions: 40mm x 20mm x 43mm • Weight: 55g

Speaker 0.5W 8ohm
Speaker 0.5W 8ohm

Small audio speaker ideal for radio and projects including amplifiers. Diameter is only 57mm and yet it provides enough power.

Vibrating motor
Vibrating motor

A vibrating motor will provide tactical feedback on your projects! Easy to connect, power efficient and works directly with Dasduino / Arduino. Now your DIY consoles will be more advanced, or you can give your old joysticks a boost in vibration.

Step-up modue with XL6009
Step-up modue with XL6009

Smaller booster (step-up) module. Input voltage is increased to the desired level.

 

• Input voltage: 5-32 V
• Output voltage: 5-35 V (adjustable)
• Input current: (max) 10A
• Efficiency: greater than 94%
• Dimensions: 43mm x 21mm x 14mm

Male header 40-pin
Male header 40-pin

Classical male header with 2.54mm pin spacing (0.1 ‘). 40-pin.

15x 10k resistor (pull-up/pull-down)
15x 10k resistor (pull-up/pull-down)

15x 10k resistor (pull-up/pull-down)

Empty PCBs, 10 pcs
Empty PCBs, 10 pcs

They say that whoever works – makes mistakes. Well so do we! We have an old circuit board that we rest from unsuccessful projects or are simply a bug. There has excess PCBs of prototype products or serial products that are no longer manufactured. You will find everything, not necessarily functional 🙂

 

Use these chips to practice soldering on them, like a keychain or decoration for the wall. Give them to a friend. Make your next project on them. Let your imagination run wild 🙂

Note: Do not take these printed circuit boards as functional. We can not offer technical support for them. Some of them may have a number of brazed components.

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