Difference between revisions of "Matrix - Thermistor"
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* The module mainly contains a thermistor. A thermistor is a type of resistor whose resistance is dependent on temperature. | * The module mainly contains a thermistor. A thermistor is a type of resistor whose resistance is dependent on temperature. | ||
| − | == | + | ==Applications== |
| − | + | The Matrix-Thermistor module outputs analog signals which can be converted to digital signals through an ADC converter e.g. the Matrix-Analog_to_Digital_Converter module.<br> | |
| − | + | For more details about the Matrix-Analog_to_Digital_Converter module refer to wiki:[[Matrix_-_Analog_to_Digital_Converter]].<br> | |
| − | === | + | ===Connect to NanoPi M1=== |
| − | + | Refer to the following connection diagram to connect the module to the NanoPi M1:<br> | |
[[File:Matrix-Thermistor_nanopi_m1.jpg|frameless|600px|Matrix-Thermistor_nanopi_m1]] | [[File:Matrix-Thermistor_nanopi_m1.jpg|frameless|600px|Matrix-Thermistor_nanopi_m1]] | ||
| − | + | Connection Details: | |
{| class="wikitable" | {| class="wikitable" | ||
|- | |- | ||
| Line 48: | Line 48: | ||
|} | |} | ||
| − | === | + | ===Connect to NanoPi 2=== |
| − | + | Refer to the following connection diagram to connect the module to the NanoPi 2:<br> | |
[[File:Matrix-Thermistor_nanopi_2.jpg|frameless|600px|Matrix-Thermistor_nanopi_2]] | [[File:Matrix-Thermistor_nanopi_2.jpg|frameless|600px|Matrix-Thermistor_nanopi_2]] | ||
| − | + | Connection Details: | |
{| class="wikitable" | {| class="wikitable" | ||
|- | |- | ||
| Line 64: | Line 64: | ||
|} | |} | ||
| − | === | + | ===Connect to NanoPi M2 / NanoPi 2 Fire=== |
| − | NanoPi | + | Refer to the following connection diagram to connect the module to the NanoPi M2/ NanoPi 2 Fire:<br> |
| − | + | ||
[[File:Matrix-Thermistor_nanopi_m2.jpg|frameless|600px|Matrix-Thermistor_nanopi_m2]] | [[File:Matrix-Thermistor_nanopi_m2.jpg|frameless|600px|Matrix-Thermistor_nanopi_m2]] | ||
| − | + | Connection Details: | |
{| class="wikitable" | {| class="wikitable" | ||
|- | |- | ||
| Line 81: | Line 80: | ||
|} | |} | ||
| − | === | + | ===Connect to NanoPC-T2=== |
| − | + | Refer to the following connection diagram to connect the module to the NanoPC-T2:<br> | |
[[File:Matrix-Thermistor_NanoPC-T2.jpg|frameless|600px|Matrix-Thermistor_NanoPC-T2]] | [[File:Matrix-Thermistor_NanoPC-T2.jpg|frameless|600px|Matrix-Thermistor_NanoPC-T2]] | ||
| − | + | Connection Details: | |
{| class="wikitable" | {| class="wikitable" | ||
|- | |- | ||
| Line 97: | Line 96: | ||
|} | |} | ||
| − | == | + | ==Compile & Run Test Program== |
| − | + | Boot your ARM board with Debian and copy the matrix code: | |
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
$ apt-get update && apt-get install git | $ apt-get update && apt-get install git | ||
$ git clone https://github.com/friendlyarm/matrix.git | $ git clone https://github.com/friendlyarm/matrix.git | ||
</syntaxhighlight> | </syntaxhighlight> | ||
| − | + | If your cloning is done successfully a "matrix" directory will be generated. | |
| − | + | Compile and install Matrix: | |
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
$ cd matrix | $ cd matrix | ||
| Line 111: | Line 110: | ||
</syntaxhighlight> | </syntaxhighlight> | ||
| − | + | Run test program: | |
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
$ matrix-adc | $ matrix-adc | ||
</syntaxhighlight> | </syntaxhighlight> | ||
| − | + | Note: this module is not plug and play therefore before running the module please make sure it is connected to an ARM board.<br> | |
| − | + | Here is what you should observe:<br> | |
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
The channel0 value is 2460 | The channel0 value is 2460 | ||
</syntaxhighlight> | </syntaxhighlight> | ||
| − | == | + | ==Code Sample== |
| − | + | This Matrix code sample can work with all the ARM boards mentioned in this module's wiki. The name of this code sample is "matrix-analog_to_digital_converter". Here is its source code: | |
<syntaxhighlight lang="c"> | <syntaxhighlight lang="c"> | ||
int main(int argc, char ** argv) | int main(int argc, char ** argv) | ||
| Line 151: | Line 150: | ||
} | } | ||
</syntaxhighlight> | </syntaxhighlight> | ||
| − | + | For more details about this APIs called in this code sample refer to [[Matrix API reference manual]] <br> | |
==Resources== | ==Resources== | ||
Latest revision as of 16:24, 24 June 2016
Contents
1 Introduction
- The Matrix-Thermistor module is a thermistor module. It has a 3 pin 2.54mm spacing pin header of which V is supply voltage, G is ground and S is output analog signal. Users can convert output analog signals to digital signals via ADC conversion.
- To increase measured values' accuracy please make the sensor in close contact with a measured object.
2 Features
- GPIO, 3.3/5V
- Small
- 2.54mm spacing pin header
- PCB Dimension(mm): 8 x 24
- Pin Description:
| Pin | Description |
| S | Analog GPIO |
| V | Supply Voltage 5V |
| G | Ground |
3 Basic Device Operation
- The module mainly contains a thermistor. A thermistor is a type of resistor whose resistance is dependent on temperature.
4 Applications
The Matrix-Thermistor module outputs analog signals which can be converted to digital signals through an ADC converter e.g. the Matrix-Analog_to_Digital_Converter module.
For more details about the Matrix-Analog_to_Digital_Converter module refer to wiki:Matrix_-_Analog_to_Digital_Converter.
4.1 Connect to NanoPi M1
Refer to the following connection diagram to connect the module to the NanoPi M1:
Connection Details:
| Matrix-Thermistor | |
| GND | NanoPi M1 Pin9 |
| 5V | NanoPi M1 Pin2 |
| S | Matrix-Analog_to_Digital_Converter A0 |
4.2 Connect to NanoPi 2
Refer to the following connection diagram to connect the module to the NanoPi 2:
Matrix-Thermistor_nanopi_2
Connection Details:
| Matrix-Thermistor | |
| GND | NanoPi 2 Pin9 |
| 5V | NanoPi 2 Pin2 |
| S | Matrix-Analog_to_Digital_Converter A0 |
4.3 Connect to NanoPi M2 / NanoPi 2 Fire
Refer to the following connection diagram to connect the module to the NanoPi M2/ NanoPi 2 Fire:
Connection Details:
| Matrix-Thermistor | |
| GND | NanoPi M2 Pin9 |
| 5V | NanoPi M2 Pin2 |
| S | Matrix-Analog_to_Digital_Converter A0 |
4.4 Connect to NanoPC-T2
Refer to the following connection diagram to connect the module to the NanoPC-T2:
Matrix-Thermistor_NanoPC-T2
Connection Details:
| Matrix-Potentiometer | |
| GND | NanoPC-T2 USB Host GND |
| 5V | NanoPC-T2 USB Host 5V |
| S | Matrix-Analog_to_Digital_Converter A0 |
5 Compile & Run Test Program
Boot your ARM board with Debian and copy the matrix code:
$ apt-get update && apt-get install git $ git clone https://github.com/friendlyarm/matrix.git
If your cloning is done successfully a "matrix" directory will be generated.
Compile and install Matrix:
$ cd matrix $ make && make install
Run test program:
$ matrix-adcNote: this module is not plug and play therefore before running the module please make sure it is connected to an ARM board.
Here is what you should observe:
The channel0 value is 24606 Code Sample
This Matrix code sample can work with all the ARM boards mentioned in this module's wiki. The name of this code sample is "matrix-analog_to_digital_converter". Here is its source code:
int main(int argc, char ** argv) { int i = 0; int value = 0; int channel = 0; if (boardInit() < 0) { printf("Fail to init board\n"); return -1; } if (argc == 2) channel = atoi(argv[1]); system("modprobe "DRIVER_MODULE); signal(SIGINT, intHandler); for (i=0; i<ADC_READ_TIMES; i++) { if (pcf8591Read(channel, &value) != -1) { printf("The channel%d value is %d\n", channel, value); } else { printf("Fail to get channel%d value\n", channel); } } system("rmmod "DRIVER_MODULE); return 0; }
For more details about this APIs called in this code sample refer to Matrix API reference manual
7 Resources
8 Update Log
8.1 June-25-2016
- Re-organized and simplified wiki
