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Results tagged with arduino
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user 154096
Be sure to use the Arduino Stack Exchange for questions that are more Arduino and less electronics.
1
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Reflectance sensor circuit
That part is a phototransistor. It is one of the types of photodetectors. A phototransistor is similar to the normal BJT but the base region is exposed to the light and when it is exposed, the current …
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0
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Arduino for 24V DC motor speedcontrol
I/P for optocoupler 5V from Arduino,
VGS of MOSFET is 3.9V.
VDS of MOSFET is 24V.
According to the datasheet, input voltages are enough for this circuit. …
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0
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Counting the number of zero crossing using arduino uno
By detecting this signal using an MCU such as Arduino, we can find the frequency of the signal. Here is a simple workout of Arduino code for zero cross detection. … Here is the circuit of Arduino and H11AA1 for zero cross detecting. …
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0
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Voltage regulator for Stepper and Microcontroller
You may try to add a resistor in series with 5V regulator where that supply goes to stepper motor. To supply 3.5 V to stepper motor whose current rating is 670mA/ phase, you need to add a resistor of …
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1
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Transistor to turn 3 Amp motor on/off
You could try PWM concept in Arduino to control the Motor speed and it can be done via MOSFET. Here is the common MOSFET circuit for Motor Control. …
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0
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How to drive a 10 Watt LED from an Arduino?
The only 800mA is the highest current that can be handled by 2N2222 NPN transistor. In order to handle 1A in a circuit, you need a different transistor other than this which can handle 1A current. Mos …
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1
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Connecting DIODE in relay circuit
You do not need a diode to protect a circuit and components if you choose SSR. Diodes are used as fly back diode in mechanical relay circuits.
It would help you, if you understood a difference betwee …
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2
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Accepted
Can I use any GPIO pins on the Raspberry Pi for the HX711 Amplifier?
pin 2 -> HX711 CLK
3 -> DOUT
5V -> VCC
GND -> GND
>>>>**Most any pin on the Arduino Uno will be compatible with DOUT/CLK.**
The HX711 board can be powered from 2.7V to 5V so the Arduino 5V power … Like Arduino, RaspberryPi also can be used with HX711 amplifier via python library of HX711. And there is no need to use SCK pin of Raspberrypi. For more info, find this tutorial. …
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Arduino 24VDC motor speed control
I have designed a circuit with some resources from this website and I attached it here. I have given circuit connection in a breadboard and successfully run and control the speed of the motor. After a …
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-1
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Convert Arduino 5v signal to 12v signal for servo
Servo motors do need that control when it is controlled by Arduino. …
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1
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How do I connect an avalanche photodiode to an Arduino Uno?
Normally you will connect the anode of the photodiode to the analog pin of Arduino and cathode to the ground. Cathode and case pin shares the same ground. …
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2
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DC motor control using BJT
Instead of BJT, using a MOSFET will be effective since the transistor you used (2N3903) have maximum collector current of 200 mA whereas Motor specifications tell us that the load current is 300mA.
…
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