Devices
| MPN | Article | Brand | In stock | Price | Discounts | Quantity | Description | Weight g. | Mounting type | Factory packaging |
|---|
Converter USB - UART CH340
#13418
|
25544 | CHINA | — |
35 грн.
|
— | Converter USB - UART CH340 is used to connect the microcontroller to a personal computer. The module is connected to the computer using the USB interface, and to the microcontroller device via the UART interface with TTL level signals. Often the module is used to connect Arduino boards or other microprocessor devices to a computer. The converter is designed based on the integrated circuit CH340. The chip provides two-way communication and high speed transfer via USB interface, it also emulates a serial output with a speed from 75 bits to 2 Mbits. The main feature of the microcircuit, which distinguishes it from analogues, is its low price. There are 6 pins on the module board. The VCC and GND pins are used as board power, the TxD pin is the transmit line, and the RxD pin is the receive line of the UART signal. If the microcontroller is already connected to its power supply, then the module is connected to it through 3 outputs: GND, TD and RD. The signal level will change on the TxD and RxD lines, which is set by a jumper between the VCC outputs (3.3V, 5V). Please note that the receiver of the RxD module must be connected to the transmitter of the TX controller, similarly, the TxD output of the converter to the RX of the microcontroller. There are 3 LED indicators on the module, where: one LED informs about the voltage supply to the board, the other two indicators signal the activity of the RxD and TxD outputs. If, when connecting the USB-UART CH340 converter to the PC, the drivers were not installed automatically, then you need to download them from link and then install them manually. The converter supports all versions of the Windows operating system. In addition, on the manufacturer's website you can download drivers for Linux, MAC OS and ANDROID with application examples. | 5.7 | — | 20pcs | ||
| 25659 | CHINA | — |
320 грн.
|
— | Automatic detection of NPN and PNP transistors, N-channel and P-channel MOSFETs, diodes (including dual diodes), thyristors, resistors and capacitors, determines the polarity and types of pins. Test time 1-2 seconds (except for large capacitors). One control button. Automatic shutdown. Specifications: LCD screen 128*64 dots Firmware on the ATmega328 chip - 2.07w Resistance: 0.1Ω - 50MΩ Capacitance: 25pF - 100000uF Inductance: 0.01mH-20H Supply voltage: Krona 9V (6F22) Standby current: 0.02uA Working current: 25mA Calibration: Like any other measuring instrument, the LCR-T4 requires periodic calibration. The developers have greatly simplified this procedure and you do not need special expensive equipment for this. Before starting calibration, prepare a three-pin jumper with a pitch of 2.54 mm and a good quality non-electrolytic capacitor with a capacity greater than 0.1 microfarads. Metal film capacitors of 0.15, 0.22, 0.33 uF are perfect. Install a jumper in the test socket in contacts 1-2-3 and press the button. The tester, having determined the jumper, will begin self-calibration. The progress of the calibration will be shown on the display. About halfway through the process, the procedure will stop and you will be prompted to remove the jumper. Remove it and calibration will automatically resume. After a short time, the tester will offer to install a capacitor in 1-3 contacts. Insert the capacitor and fix it. A few more seconds and the calibration will be over. The result will be a display of the parameters of the installed capacitor. | 45 | — | 1 PC. | |||
| 25988 | CHINA | — |
39 грн.
|
— | The digital voltmeter is designed to measure the voltage of an electrical circuit. A feature of the module is the small size of its indication. This digital voltmeter can be used in the power supply, on-board computer of the car and other devices that need visualization of voltage values. It can also be used to control the voltage of chargers. The current voltage value is displayed on a seven-segment display. The measured voltage range is from 0 to 30 V. The measurement error of the device is ±1%. The meter has 3 wires: Red wire: 4 - 30 V digital voltmeter power supply Black wire: "ground" White wire: external power supply voltage measurement 0 - 30 V The digital voltmeter is already calibrated. Additional calibration of the digital voltmeter is carried out using a trimmer resistor, which is located on the reverse side of the board. | 5.7 | — | 1 PC. | |||
| 26022 | CHINA | — |
43 грн.
|
— | A digital voltmeter that is designed to measure the DC voltage of an electrical circuit. This device can be used in power supplies, chargers of various devices, etc. It can also be used to measure voltage in various electrical circuits by connecting the device to the terminals. The features of this voltmeter are low cost and high measurement accuracy. A digital voltmeter was designed based on a seven-segment indicator, a control microcircuit and other auxiliary components. The display is designed to show the value of the current voltage. This voltmeter model has a red backlight. The voltage measurement range is from 0 to 30 V. The measurement error is about 1%. Due to its small size and embedded design, the digital voltmeter can be mounted in the panel of someone's device. Mounting holes are located on the back of the case, allowing you to mount the device on a flat surface. A digital voltmeter is connected to the measured electrical circuit using 3 wires. Pin assignments: VCC (red wire): supply voltage 4.7 - 30 V GND (black wire): ground VIN (white wire): external device voltage measurement 0 - 30V This digital voltmeter can be connected in 2 ways: If the supply voltage of the measured circuit is in the range from 4.5 to 30 V, then the device can be connected directly to the circuit. If necessary, the digital voltmeter can be connected to a separate power source, then the VIN pin must be connected to the measured circuit. The device is powered by the measured electrical circuit or an external power source. The power supply voltage range of the device is from 4.7 to 30 V. Using a supply voltage above 30 V will damage the device. As protection against exceeding the permissible voltage value, it is recommended to install a fuse, suppressor, etc. on the input. Technical parameters of digital voltmeter: Range of measured voltages, V 0 ... 30 Supply voltage, V 4.7 ... 30 Measurement error, % 1 Input resistance not less than, kOhm 100 Current consumption, no more than, mA 18 Measurement time, ms 300 Display Color Red Operating temperature range, °C -10 ... +65. Overall dimensions, mm 35 x 23 x 20.5 Landing size, mm 32.5 x 22.5 Digit height, mm 9. | 9.2 | DIP | 1 PC. | |||
| 26024 | CHINA | — |
320 грн.
|
— | Hot characteristic: A mega tester was designed on the basis of the ATmega328 microcontroller, the COG12864 LCD display, a key button, a block, a quartz resonator and other additional components, to ensure the correct operation of the robot. I will add some special features: automatic switching on and easy calibration process. Change of parameters: For the help of the LCR-T4 mega tester, you can find out the parameters of such components: capacitor, resistor, conductor elements (transistor, diode) and inductance coil. Vimiruvach can designate the following parameters of electronic components: element opir inductance capacitor capacity Type and characteristics of the transistor /diode Transmission coefficient of the base of a bipolar transistor Bipolar transistor voltage FET gate capacitance Field-effect transistor voltage Voltage drop on diodes Parasitic capacitance of the diode In order to change the parameter of the component, it is necessary to turn on the power socket at the same time as the "Krona" battery. Let's then clean up the fixation from the block, pulling the important uphill, and place the necessary element in the block. If necessary, close the latch, pulling the valve down, and briefly press the control button. Let's use the mega tester LCR-T4 to automatically determine the characteristics of the element, which is installed into the bar. Catch your respect, when the capacitor capacity is reduced, it is necessary to discharge it! Calibration: Calibration of the tester is guilty of being carried out periodically as for any other vimiruvalnyh devices. In order to calibrate the switch, prepare two high-capacity capacitors (polypropylene, metal-filled ...) with a capacity of over 100nF and 4-30nF, as well as a jumper for switching three contacts in the test panel. Next, you need to install a jumper in contacts 1, 2, 3 and press the control button. When switched on, the screen will display "Self-test mode?". Press the button again to confirm. The calibration will be revealed. Dock the message "Isolation!" and remove the jumper. Self-calibration will continue until the capacitor symbol appears and the rating must be inserted. As a rule, during the first calibration, it is necessary to insert a capacitor on the back with a capacity of over 100 nanofarads, and then 4-30 nanofarads, and with advance only 4-30 nF. Completion of the calibration is accompanied by the revision of the software version and the "Test completed" notification. External calibration can be repeated by going to the menu and selecting the "Self test mode" item. Technical characteristics I will add: microcontroller ATmega328 Life pressure, V 9 Support range 0.1 Ohm ... 50 MOhm Range of variable inductance 0.01 mH ... 20 H Range of variable capacity 25 pF ... 100000 uF Working strum, mA 25 Module dimensions, mm 72 x 59. | 50 | — | 1 PC. | |||
Counter SVN-2-02 27V
#13911
|
26090 | СНГ | — |
550 грн.
|
— | Electronic digital operating time meters SVN-2-02 27V are designed to measure and digitally display the operating time of automotive and tractor and road construction equipment, various electrical installations for timely maintenance and monitoring of resource development. Time counting is performed in the presence of only alternating voltage at the additional input "C" (for example, alternating voltage of a generator or a speed sensor in a car), which makes it difficult for unauthorized "winding" of the operating time. | 90 | — | 1 PC. |
