Show Posts
Pages: [1] 2 3 ... 5
1  Using Arduino / Sensors / Re: Multiple Analog sensors with pulse sensor sync problem, PLEASE HELP!!! on: August 07, 2014, 11:37:33 pm
you should detailed describe what kind of help you need? hardware of firmware ? or just block diagram. for you digital/analog output sensor, it can be read one by one , and then sent to uart.  for the pulse sensor, it should be dealed in the interrutpur,  and set the flag  no notify the main Loop() than a external interrupt happened. so the LOOP() can get to deal the interruput .
2  Using Arduino / Sensors / Re: Multiple Analog sensors with pulse sensor sync problem, PLEASE HELP!!! on: August 07, 2014, 11:36:47 pm
you should detailed describe what kind of help you need? hardware of firmware ? or just block diagram. for you digital/analog output sensor, it can be read one by one , and then sent to uart.  for the pulse sensor, it should be dealed in the interrutpur,  and set the flag  no notify the main Loop() than a external interrupt happened. so the LOOP() can get to deal the interruput .
3  Using Arduino / Sensors / Re: Problem with an array of soil moisture sensors on: August 07, 2014, 11:30:58 pm
actually, i suggest you using the analog port of all the moisture sensors.  in this way, you can get the relative moisture value of all the sensor, such as this:http://www.elecrow.com/soil-moisture-sensor-p-509.html
4  Using Arduino / Sensors / Re: Problem with an array of soil moisture sensors on: August 07, 2014, 11:27:12 pm
there is a protentiometer on the board to set the Threshold value, to outpout logic High or LOW. try to adjust it .
5  Using Arduino / Sensors / Re: Sensor for weighing objects on: August 07, 2014, 11:12:54 pm
if you want to get relative high-Precision result, i suggest you use the load cell weight sensor and amplifier.  i do not know your mearing range , maybe this would work:http://www.elecrow.com/weight-sensor-kit-3kg-p-883.html
6  Using Arduino / Sensors / Re: ADC Value Problem on: August 07, 2014, 11:07:37 pm
Code:
  //Imput am Pin A2 einlesen
  int sensorValueA2 = analogRead(A2);
  //Den Analogen Wert (welcher von 0 - 1023 reicht) in eine Spanung (0 - 5V) umrechnen
  float Niederschlag = sensorValueA2 * (5.0 / 1023.0);
  if (sensorValueA2 == 5)
{
//Serial.print(Niederschlag);
//Serial.println("0");
return 0;

what do you want to do ? the sensorValueA2 is range from 0 to 1023, and it is not stable, so it is very likly not equal to 5, and the function return 0..
7  Using Arduino / Sensors / Re: ADC Value Problem on: August 07, 2014, 11:06:35 pm
Code:
  //Imput am Pin A2 einlesen
  int sensorValueA2 = analogRead(A2);
  //Den Analogen Wert (welcher von 0 - 1023 reicht) in eine Spanung (0 - 5V) umrechnen
  float Niederschlag = sensorValueA2 * (5.0 / 1023.0);
  if (sensorValueA2 == 5)
{
//Serial.print(Niederschlag);
//Serial.println("0");
return 0;

what do you want to do ? the sensorValueA2 is range from 0 to 1023, and it is not stable, so it is very likly not equal to 5, and the function return 0..
8  Using Arduino / Sensors / Re: Protecting the AD pins on: August 07, 2014, 09:30:18 pm
the design is farily good, i believe the most important problem is :what kind of diodes you use.
9  Using Arduino / Sensors / Re: DHT11 on: August 07, 2014, 09:28:05 pm
detailed usage at :http://www.elecrow.com/wiki/index.php?title=DHT11
hope it helps
10  Using Arduino / Sensors / Re: DHT 11 burnt with external power supply on: August 07, 2014, 09:23:22 pm
as the voltage is alright, the current would not lead to any damage.
11  Using Arduino / Sensors / Re: Motor Voltage & Current With Sparkfun ACS712 & Adafruit INA219 Current Sensors on: August 07, 2014, 09:19:19 pm
i have experance using the ACS712, that is a realy good module and easy to use.
12  Using Arduino / Networking, Protocols, and Devices / Re: Wiring multiple devices to Arduino through SPI on: July 20, 2014, 11:04:16 pm
the MISO/MOSI and slk can be multipule used, which the "SS" is the slave-select, to select which slave module the microcontroller want to communicate with...
13  Using Arduino / Sensors / Re: PIR Sensor - remove the 'delay' when detecting motion? on: July 18, 2014, 10:09:38 pm
there is 2 Adjustable resistor on the PIR sensor, have a try to adjust them.  the delay time do not have any relationship with the coding, do not waste time on the coding.
14  Using Arduino / Sensors / Re: Arduino mega2560 and MPU5060 sda and scl connections on: July 18, 2014, 10:05:45 pm
i do not think it is impossible. you can use the software I2C library, to make any pins to act like the I2C port: http://playground.arduino.cc/Main/SoftwareI2CLibrary
15  Using Arduino / Sensors / Re: GPS Module not working. on: July 18, 2014, 10:00:55 pm
okey, boy, give you a very simple to check if your GPS work, do not need Arduino or any code.
connect the gps to directly to your UART of computer, if your computor do not have a uart, just use a USB2UART convert, like the ch340 module orFt232 module , and then open the uart monitor .... the gps module will report.
As the gps module has a uart communication,  Arduino and any code is not essensital for your checking of the gps module itself.
Pages: [1] 2 3 ... 5