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โมดูลวัดแรงดัน 0-25v โดยใช้หลักการ Voltage divider จากการใช้ตัวต้านทานแบ่งแรงดัน สามารถใช้กับ controller ที่รองรับ analog input ขนาด 0-5v สำหรับย่านวัดแรงดัน 0-25v 
และสามารถใช้กับ controller ที่รองรับ analog input ขนาด 0-3.3v สำหรับย่านวัดแรงดัน 0-16.5v 


ตัวอย่าง Code 

void setup()
{
 Serial.begin(9600);
 Serial.println("ModuleMore.Com");
 Serial.println("Voltage: ");
}
void loop()
{
 int raw = analogRead(A0);
 float volt = 5.0*raw / 1023.0;
 Serial.println(volt);
 delay(1000);
}







Module introduction:
This module is designed based on the principle of resistance divider, which can reduce the input voltage of the terminal interface by 5 times. The maximum analog input voltage of Arduin is 5V, so the input voltage of the voltage detection module cannot be greater than 5V×5=25V (if 3.3V is used For the system, the input voltage cannot be greater than 3.3Vx5=16.5V). Because the AVR chip used by Arduino is 10-bit AD, the analog resolution of this module is 0.00489V (5V/1023), so the minimum voltage detected by the voltage detection module is 0.00489V×5=0.02445V.
Parameter:
voltage input range: DC0-25V
voltage detection range: DC0.02445V-25V
voltage analog resolution: 0.00489V
DC input interface: terminal positive to VCC, negative to GND
Output interface: "+" to 5/3.3V, " -"Connect to GND, "s" to Arduin AD pin

The internal circuit diagram of the Voltage Sensor Module is given below.
Conditions
Tags
diy Voltage วัดแรงดัน voltmeter โวลต์มิเตอร์

Exchange or return policy



Every item comes with a 30-day warranty. However, there are certain conditions that apply:

  1. The customer should not be responsible for any self-inflicted damage, such as incorrect power connections (for example, supplying 5V instead of the required 3.3V for a sensor).

  2. The product must be in perfect condition, without any breakage or damage caused by electricity (e.g., short circuits leading to electrical fires).

  3. The store does not accept product exchanges due to customer misunderstandings, such as purchasing the wrong size for their project or buying something without eventually using it. Customers can inquire about the product details and ensure compatibility before making a purchase by contacting us through our Line account @modulemore during business hours. Please note that there may be delays in response between 12:00 PM and 2:00 PM.

Return Policy: To initiate a product return, customers must provide the original receipt or a copy for quick verification. Returns can be sent to our store address by following these guidelines:

  1. Provide a detailed description of the damaged item(s).
  2. Mention any tests or experiments conducted by the customer.

Please note that the store reserves the right to make the final decision regarding product replacement or refund.

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Arduino compatible board, Iot, ESP32, ESP8266, Nodemcu, Raspberry pi, micro:bit and etc.
Mobile number : 0831710868
E-mail : paheyisoicus@gmail.com
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