Grove - Differential Amplifier v1.2
Introduction
3.3V 5.0V Digital
This Grove is designed for precise differential-input amplification. Input the differential
signals of your sensor to this module through the male pins, then your Arduino will
get a precisely amplified output from the Grove interface. The gain scale factor is
selectable. You can get a 35 times or 1085 times amplification via a switch on the
board.
Features
• High amplifying pr ec i si o n
• Selecta bl e sc al e fac tor
• Can be conve ni ently read by Arduino
Tip
More details about Grove modules please refer to Grove System
Applications
Item
Min
Typical
Max
Unit
Operating Voltage
2.7
5.0
5.5
VDC
(Vcc-
0.8)/Gain
Output Voltage
0
\\
Vcc-0.80
mV
Select
35
Select
1085
Raspberry
Pi
LinkIt
ONE
• Data acqui si ti o n
• Battery operated s ys tem s
• Pressure and temperature bridge amplifiers
• General purpose instrume nt a ti o n
Specifications
Input Voltage 0.1 \\
/ 35 /
Gain
/ 1085 /
Platforms Supported
Arduino Wio BeagleBone
mV
/
Caution
The platforms mentioned above as supported is/are an indication of the module's hardware or theoritical compatibility. We only
provide software library or code examples for Arduino platform in most cases. It is not possible to provide software library /
demo code for all possible MCU platforms. Hence, users have to write their own software library.
Usage
1. Sensor Choosing
The amplifier can turn signals in mA scale up to A scale. Before using it, make sure
the output range of your sensor is in mA scale. For example, Weight Sensor is one of
them.
2. Connector Reforming
To pair the weight sensor up with the male pins on the amplifier, female connectors
need to be soldered on its wires.
3. Hardware Hookup
Connect the weight sensor to the amplifier as the picture depicts be low.
4. Measurement
Copy and paste the demo code below to Arduino IDE and upload it.
void setup()
{
Serial.begin(9600);
Serial.println("start");
}
void loop()
{
int i;
int value;
float V,Vo;
float Sum=0;
for(i=0;i<10;i++)
{
value=analogRead(4);
V=value*5.00/1023;
Sum+=V;
delay(10);
}
Vo=Sum/10;
Serial.print("Output score:");
Serial.println(Vo);
delay(1000);
}
You can view the amplified signals via serial monitor. For the value of the input
signal, you need to use the multimeter to measure the voltage difference between
VIN+ and VIN-.
Loading...