Posts tagged ‘Data Logging’

Temperature and Humidity Logging Over Ethernet — II

Last week, I discussed the construction of a network-capable temperature and humidity sensor using SHT21 and ENC28J60 with an ATmega328P microcontroller. In this post, I will show the results obtained so far and the techniques used to chart the data. Continue reading ‘Temperature and Humidity Logging Over Ethernet — II’ »

Temperature and Humidity Logging Over Ethernet — I

I did a project on temperature/humidity logging a couple of years ago. In that project I logged the temperature and humidity readings in my basement lab over the course of a year. One issue with the approach I took back then was that the data could not be observed in real time because the logged data were written to an SD card and could only be retrieved once the logging process was done. Continue reading ‘Temperature and Humidity Logging Over Ethernet — I’ »

Temperature/Humidity Data Logger — One Year Worth of Data

I had almost forgotten about the experiment I started late last year using the data logger I built to log the temperature and humidity values in my basement lab for an entire year. The logger worked well during the initial trial run, but having it run continuously for a whole year is another story. Continue reading ‘Temperature/Humidity Data Logger — One Year Worth of Data’ »

Temperature/Humidity Data Logger — Trial Run

I built a rather generic I2C data logger a few weeks back. As I mentioned in my earlier posts, it can be used to log data from almost any I2C slave devices with relatively little code modification. Continue reading ‘Temperature/Humidity Data Logger — Trial Run’ »

I2C Data Logger Using ATmega328p and DS3232 – II

In my last blog post, I showed you the schematic of a I2C data logger I built. Here I will discuss some sample code used for this data logger and how to make it even more flexible. Continue reading ‘I2C Data Logger Using ATmega328p and DS3232 – II’ »

I2C Data Logger Using ATmega328p and DS3232 – I

There is a popular data logger shield out there designed for Arduino using a DS1307 real time clock chip. And that design makes data logging extremely easy if an Arduino board is used. Continue reading ‘I2C Data Logger Using ATmega328p and DS3232 – I’ »