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This breakout board for TI’s DRV8825 micro stepping bipolar stepper motor driver features adjustable current limiting, over-current and over-temperature protection, and six microstep resolutions (down to 1/32-step). It operates from 8.2 V to 45 V and can deliver up to approximately 1.5 A per phase without a heat sink or forced air flow (rated for up to 2.2 A per coil with sufficient additional cooling). The driver has a pinout and interface that are nearly identical to those of our A4988 stepper motor driver carriers, so it can be used as a higher-performance drop-in replacement for those boards in many applications. -
Operating voltage: 2.7V to 10.8V Dual-H-bridge motor driver: can drive two DC motors or one bipolar stepper motor Reverse-voltage protection circuit Inputs are 3V- and 5V-compatible# Image shown is a representation only #
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The DS1302 trickle-charge timekeeping chip contains a real-time clock/calendar and 31 bytes of static RAM. It communicates with a microprocessor via a simple serial interface. The real-time clock/calendar provides seconds, minutes, hours, day, date, month, and year information. Only three wires are required to communicate with the clock/RAM: CE, I/O (data line), and SCLK (serial clock). Data can be transferred to and from the clock/RAM 1 byte at a time or in a burst of up to 31 bytes. The DS1302 is designed to operate on very low power and retain data and clock information on less than 1μW. The DS1302 has dual power pins, one for primary and another for backup. -
This custom designed module uses the DS1307 Real Time Clock to keep track of the current year, month, day as well as the current time. The module comes fully assembled and pre-programmed with the current time (OK, so it's MST current time). The DS1307 is accessed via the I2C protocol. -
Introduction: These 3-wire digital temperature sensors are fairly precise (±0.5°C over much of the range) and can give up to 12 bits of precision from the onboard digital-to-analog converter. They work great with any microcontroller using a single digital pin, and you can even connect multiple ones to the same pin, each one has a unique 64-bit ID burned in at the factory to differentiate them. Usable with 3.0-5.0V systems. Technical Details: Technical specs: Usable temperature range: -5° to 90°C (-23°F to 194°F) 9 to 12 bit selectable resolution Uses 1-Wire interface- requires only one digital pin for communication Unique 64 bit ID burned into chip Multiple sensors can share one pin ±0.5°C Accuracy from -10°C to 85°C Temperature-limit alarm system Query time is less than 750ms Usable with 3.0V to 5.5V power/data -
Cable specs: -Stainless steel tube 6mm diameter by 30mm long. -Cable is 36" long / 91cm, 4mm diameter. -Contains DS18B20 temperature sensor. -If your sensor has four wires - Red connects to 3-5V, Black connects to ground and White is data. The copper wire is soldered to the wire shielding. -If your sensor has three wires - Red connects to 3-5V, -Blue/Black connects to ground and Yellow/White is data. DS18B20 Technical specs: -Usable temperature range: -55 to 125°C (-67°F to 257°F). -9 to 12 bit selectable resolution. -Uses 1-Wire interface- requires only one digital pin for communication. -Unique 64 bit ID burned into chip. -Multiple sensors can share one pin. ±0.5°C Accuracy from -10°C to 85°C. -Temperature-limit alarm system. -Query time is less than 750ms. -Usable with 3.0V to 5.5V power/data. -
General Description The DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC) with an integrated temperaturecompensated crystal oscillator (TCXO) and crystal. The device incorporates a battery input, and maintains accurate timekeeping when main power to the device is interrupted. The integration of the crystal resonator enhances the long-term accuracy of the device as well as reduces the piece-part count in a manufacturing line. The DS3231 is available in commercial and industrial temperature ranges, and is offered in a 16-pin, 300-mil SMD package. -
It is a durable probe essential for outdoor use. This also comes with a green LED for directing users where to touch. The probe comes with a brass M18 x 1 nut for panel mounting. Since the body of the probe also forms the ground contact, the panel should be of non-conducting material to avoid ground loops. The 30cm cable with connector is provided for easy connection to the system microcontroller. -
'- 2.0" LCD display - Resolution: 128 x 64 - Core processor: AVR - Core size: 8-bit - Sample rate: 250k - Trigger level: 0~5.1V - Dual channel (no coupling) - Comes with USB cable (76cm) and probe cable (25cm) -
This DSO138 digital oscilloscope kit adopts ARM Cortex-M3 processor and with 2.4-inch TFT screen. It's easy and reliable for circuit operation. It can display frequency, period, pulse width, duty ratio, MAX./MIN./AVG./Peak-Peak/virtual values.Features:This kit uses ARM Cortex-M3 processor (STM32F103C8), and includes a 2.4-inch color TFT display screen, can be used as ARM test development board.Can be secondary development on the basis of this kit, for example, it can be changed to Millivoltmeter, data loggers.Adjustable vertical displacement, and with instructions.With automatic, regular and one-shot modes, easy to capture the moment waveform.Available rising or falling edge trigger.Observable previous trigger waveform (negative delay).Can freeze at any time waveform display (HOLD function).Comes 1Hz /3.3V square wave test signal source.With waveform parameter digital display, including frequency, period, pulse width, duty ratio, MAX./MIN./AVG./Peak-Peak/virtual values.Waveform storage function: will not lose the waveform after power off.Short-circuit and open-circuit detection: can help the user find out the soldering error.TFT controller recognition function. -
Features: Kits using ARM Cortex-M3 processor (STM32F103C8), and includes a 2.4-inch color TFT display can be used as ARM test development board. Available source, Capable people can be secondary development on the basis of the suite, for example, it can be changed to Millivoltmeter, data loggers, and so on (we don't supply any technical support about that). Circuit is simple and the kit is inexpensive Description: PCB size: 117 x 76mm Screen size: 52 x 40mm Supply voltage: DC 9V -
DTMF Refers to Dual Tone Multi-Frequency Signaling. This DTMF is used for telecommunication signaling over analog telephone lines in the voice-frequency band between telephone handsets and other communications devices and the switching center. -
An electronic speed control or ESC is an electronic circuit with the purpose to vary an electric motor's speed, its direction and possibly also to act as a dynamic brake.
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