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Archive of field fixed-point observation logger

Field fixed-point observation logger (5) - data storage to the SD card (2)

Last, and then try to store the data acquired by DHT22 and the circuit was also created to store the SD card.

Schematic

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Field fixed-point observation logger (4) - data storage to the SD card (1)

It uses an SD card to store the acquired data. It does not difficult for hardware.

Material list

Reference site

Schematic

Capacitors what is called a bypass capacitor, and is intended to stabilize the current.
I am using the capacitor 1μF.

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Field fixed-point observation logger (3) - get dew point

Previous field sentinel logger (2) - air temperature and humidity get to the temperature that has been acquired in the relative humidity determined by calculating the dew point.
Therefore, by changing the program only, circuit, etc. fields fixed-point observation logger (2) - get temperature and humidity no different.

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Field fixed-point observation logger (2) - get temperature and humidity

First of all, I get the temperature and humidity.

Material list

Data sheet

Schematic

Resistance what is called a pull-up is also the order to keep the signal of the signal line in the correct state.
Capacitors what is called a bypass capacitor, and is intended to stabilize the current.
Resistance and capacitance, please confirm it is written to the data sheet.

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Field fixed-point observation logger (1) - Arudino preparation of

Arduino to use the fixed point observation for a battery use, utilize a "Arduino pro 3.3V 8MHz" low power consumption.

Material list

This is the Arduino to use the "FT232RL equipped with small USB- serial adapter 3.3V" because it is only to a USB port is not a serial connection, to connect a PC and USB.

The pin socket for connection to the shield and the breadboard I soldered as follows.

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Field fixed-point observation logger (0) - objectives and targets

projects: Biotope and is inspired by the like, to try to create a fixed-point observation logger of the field.
Later, parts used to obtain destination and price of the record so that it can be re-created.

The purpose

  • To get the temperature of the field (DHT22)
  • To get the humidity of the field (DHT22)
  • I calculate the dew point of the field from the temperature and humidity
  • To get the surface temperature of the field (LM35DZ)
  • To get the surface temperature of the field (LM35DZ)
  • To get the surface temperature of the field (DS18B20 +)
  • I output recording each acquired data in CSV format to SD card

The goal

  • Be created in Arduino1.01
  • The power supply is a battery, and mobile can be a minimum of 2 weeks
  • That real-time clock is operating even during battery replacement and SD card exchange

Development environment

  • MacBookAir (Lion) or Windows7 (32bit) or WindowsXP
  • Arduino1.01
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