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data logger construction

I would like to have a thin sensor to measure the time of wearing a scoiliosis brace by patient. Any suggestions?

Topic by orthofoo    |  last reply


ESP8266 wifi module data logger? Answered

​hello everyone, can anybody do a simpler project with this? I just want to collect data using arduino Analog0 input with an LDR photoresistor. collect the data and simply post it on Thingspeak ?!?! . all the examples I find are very complicated and include libraries. I need my project to be much simpler. just read some data from the analog sensor and display the value on the cloud. . can anybody please help me with this? I have updated the firmware on my ESP8266 and I can connect to my house network using the CoolTerm software. . any help is highly appreciated !!! thank you, akin . useful links 1. http://www.electrodragon.com/w/Wi07c 2. http://www.esp8266.com/ 3. http://www.espruino.com/ESP8266 4. https://nurdspace.nl/ESP8266 5. http://hackaday.com/tag/esp8266/

Question by Akin Yildiz    |  last reply


Cat chip logger

Could you modify the reader in a chip reading cat flap to log the details of the chips t hat pass through it rather than only let recognized chips open the flap? Chip reading cat flaps exist data logging is possible this I know, how to tie the two together is beyond me. Give me detailed instructions I could do it, but I'm more at home with working out how to wind the detector coil than what to do with it. The reason is this My sister has a problem, she is in danger of becoming a cat lady, or at least over run with strays or other peoples cats. Her current plan other than catching the visitors that are clearly street cats and delivering them to the local shelter, is setting a camera trap aimed at her cat flap and posting the visitor photos on the local area FB page with is this your lost cat under it.  couple of the poor conditioned strays she has managed to get to the shelter have been chipped it is  reasonable to assume that some of the others must be to, and they would be easier to catch possibly if their  owners were trying to do it. Even a simpler system that just connected chipped cat with photo, and there by identified which cats aren't chipped so presumably are true strays not just nominally owned would b of help those could then be targeted for capture and re homing first.

Topic by Stan1y    |  last reply


'Weather station': can it be converted/ hacked to data-logger/ PC compatible??

This christmas, many stores in Holland sell nice 'weather stations', even with remote access. But no recording, data logger, no SD card, only transmission of real time signals to the display unit.  I myself have great 1960s vintage registering equipment, from the university dumpster.   But how many folks can get to that??? Hopefully, someone can figure out how to hack one of these weather stations...

Question by BobS    |  last reply


Accessing SD memory on data logging shield

Hey again, I finished my first project recently and was looking to expand on the design. It's an EMF detector (https://www.instructables.com/community/First-project-completednow-lets-expand-it/) and it's working great. Now, I want to add memory and a USB charger to turn it into an self-contained EMF data logger. The project looks easy enough, but I have a question that I wasn't able to find answers for. Here's the question: Can the memory installed on the data logging shield be accessed through the Arduino USB port? On my cell phone, whenever I plug the USB into my laptop, it connects as a drive. I'd like to do the same thing with the EMF data logger. Or will I just have to remove the SD card every time I want to extract data from it? Thanks LorienD

Topic by LorienD    |  last reply


How to use a rtc Data logger to set pre determined times in a table/chart ?

How to use a rtc Data logger to set pre determined times in a table/chart formation to activate when all parameters are true? Parameters would be if its the correct time, and If a button is pressed during the TIME FRAME of the time(30min window) And if another parameter such as a sensor is true. Table will consist of days of the week going vertically and Objectives going across the top (USING ARDUINO ) NEED HELP WITH CODE AND WIREING PLEASE ex                             Servo1                   Servo2                         Servo3               Servo4  monday             12:00-12:30pm                ect                                ect                          ect                             2:00-2:30pm                             4:00-4:30pm                             5:00-5:30PM tuesday                                                         *AND the same with the REST of the DAYS wednesday thursday friday sat  sun

Question by instructrk    |  last reply


Provide 1000 cheap, wireless climate data loggers - Citizen Science Contest

The SciStarter Citizen Science Contest is live! This is your opportunity to help millions of citizen scientists contribute to real scientific discovery. Make their experiences better by coming up with solutions to some real annoyances that hinder their participation. To get you started, here is a specific--and very real--challenge sent to us by project organizers. PROVIDE 1000 CHEAP WIRELESS CLIMATE DATA LOGGERS Background: Wildlife of Our Homes provides an opportunity for citizen scientists to help researchers study the species that live alongside us everyday - bacteria, fungi, and insects. By using a sampling kit and answering a few questions, volunteers help researchers create an atlas of microbial diversity in homes across the country. The Problem: Project organizers would love to collect climate data in each of the 1000 homes where volunteers are sampling microbes from 4 common surfaces. Unfortunately, climate sensors are expensive, and more importantly, project organizers don't have an easy way to transfer data from those home sensors (temperature, humidity, etc) to an online database. Currently, they must physically retrieve and download the data. The Challenge: Find a way to log climate data and wirelessly transmit the data to the project organizers. Enter now! Contest closes January 21, 2013

Topic by scistarter    |  last reply


IoT data logger for large file transfers - what protocol to use? (FTP, HTTP, MQTT, …)

Hi there, We manufacture CAN bus data loggers for use in e.g. cars, trucks etc.The logger records data to an SD card. When the logger is in range of a WiFi/Cellular hotspot, it will start pushing the data to a specified server. The files will be ½-20 MB in size and need to be transferred frequently (e.g. every few seconds). A user can have 100-300 loggers deployed, all sending data to the server simultaneously. Today, we handle this using the FTP protocol. It’s been a simple solution that most users understand.However, we fear it’s not future proof and we’d like to look into other options (e.g. HTTP, MQTT) - in particular also to enable easy transfers to e.g. Amazon/Google cloud servers.A few questions that we’d like input on:What do you believe would be the best protocol for the case described above? Do you have any examples of use cases, APIs, open source code etc. in such applications? If we switch from FTP to another protocol, is there a way to keep it simple for our “less techy” users that do not use e.g. Amazon/Google servers, but just their own PCs?Thanks a ton for your inputs! Martin

Question by MartinF124  


How to log the data that comes from an IR receiver on an arduino?

Write me some code so that I can see what an IR receiver i pulled out of a toy says to my arduino, so I can tell what my TV remote is saying. I am then gonna connect a light switch to it, so when i press an unused button on my remote, lights go off. Also, Im not sure if where to plug the data pin into. Honestly, im not sure which one it even is. i jst am gona gues which until it works. Any help there would be apppreciated. A pic of the IR receiver is attached.

Question by thenewdoctorwho    |  last reply


how to build dc electromagnet which produce 5mT of flux density?

Which type of core should be used.it is used in electronic circuit just to wake up data logger

Question by dhanushar    |  last reply


Citizen Science Contest - SciStarter

Citizen Science Contest Millions of "regular" people are helping scientists discover galaxies, measure climate change, track species' migrations, monitor air and water pollution, and more through citizen science projects featured on SciStarter.com. Help make their experiences better by coming up with solutions to some real annoyances: stop critters from eating sunflowers planted to observe pollinating bees, help remind volunteers to reset rain gauges and report measurements, link activities to social experiences. Or, dream up your own home-based research project that involves public participation to advance a field of scientific research. The Challenges: To get you started, we've listed four specific--and very real--challenges sent to us by project organizers. These problems impact the experience of the participants, and/or the ability of the project to reach its full potential. Select one or more to solve or come up with your own creative solution to a challenge you face as a citizen scientist! - Create Inexpensive Hail Pads - Stop Critters from Eating Sunflowers - Help Participants Submit Their Data - Provide 1000 cheap, wireless climate data loggers Enter now! Contest closes January 21, 2013

Topic by scistarter  


Need someone to set up a system that measuring the time of wearing a brace using a sensor and pay for this

I would like someone to construct or set up a system  that measures the time that someone is wearing a brace. Usually they use temperature or  resistance sensor using a data logger. Please if someone can build this I could pay him.thank you

Topic by orthofoo    |  last reply


Attempting to create tiny, wearable, covert, simple button click counter for behavioral mod

Hi all, I've been searching both this forum and the internet in general and strangely have not come across what I'm looking to do even though to me it seems very simple. Here are the specifications/requirements of the device that I am trying to create: -extremely tiny form factor (ideally a ring sized device but I'll settle for a thin bracelet) -unobtrusive/inconspicuous (I guess a thin bracelet that could hide under a sleeve might be best) -battery powered/untethered (This is essential. The device would be useless if depended on a connection to a computer or wall socket) -battery life must last a full day -data logged is just a simple time/day stamp that would indicate when a button was clicked by the wearer      (wearer would manually click the button during the day when certain thoughts came up for him/her)       This requirement indicates that the micro controller chosen would need a clock built in and        some kind of storage - be able to upload the data to a computer I did my preliminary research considering these requirements and I came up with the following electronic components that might work: - teensy 3 (has real time clock and 2K EEPROM which should be plenty of memory for storing date stamps) - ulog (1MB of usable space across 3 analog channels, couldn't find anything about a built in clock) - Pro Micro - 3.3V/8MHz (not sure about built in real clock  but storage is 32K flash space) - OpenLog (wasn't clear about how much built in storage and didn't see any build in real time clock) These are the best I could find. If anyone has better suggestions please let me know? My idea is to connect a Mini Push Button Switch to one of the digital inputs on one these micro controllers/data loggers and write a simple sketch that records the time the button was pushed in a MMDDYYhhmm format (10 bytes per click). To power any of these micro controllers/data loggers I was planning to use a Coin Cell Battery - 12mm. I was going to sew the micro controllers/data loggers on one side of a thin piece of material that would serve as a bracelet and sew the battery on the other side. Although I'm not sure how to fix the battery to the cloth and how to connect it to the micro controllers/data loggers. I'm guessing I could find some kind of battery holder for the 12mm cell battery? Other Questions about my assumptions: Will I have enough storage left over on the flash space or EEPROM to store the data click after the sketch code has been loaded in? Will a watch battery provide enough energy to run this device all day? Is the Coin Cell Battery - 12mm the correct external power source for this project? I encourage any feed back, criticism, comments, help of any kind to move me along with this preparation so that I can move forward and purchase the parts I need. Thanks! Michael

Topic by mhussar    |  last reply


Project for vector calculus

Hello there, So, for my project in Vector Calculus: The suggestion is that we pick a certain "curve" within a country road. We are to log longitude, latitude and altitude while we drive this "curve" for approximately 15-20 seconds. With the data from the latitude-longitude-altitude "logger", we are to perform the various vector calculus principles we have learned in class. Instead of driving the road, I would like to attach whatever latitude-longitude-altitude logger to a boomerang, and get my curve through flight. Does anyone know which sensor I should be looking for? A bit about me: I am currently an electrical engineering technician in product development for a motor-controls company. I mostly test hardware/software, which is designed by our in-house engineers. I am very comfortable with soldering, visual inspection of PCBs, schematics, and general electrical engineering knowledge. Does anyone have a feasible idea for getting a gps unit onto a boomerang, and be ale to transmit the data to me in real-time? Thanks in advance.

Topic by PaulP292    |  last reply


How do I use an Arduino to write say 2.1 volts? Hobo dataloggers accept 0-2.5vdc inputs. Arduino outputs PWM.. thanks!? Answered

I'm working with a university and they love their Hobo's and I don't blame them... they're pretty straight forward to use...  I'd like to write to the Hobo... here's the hobo analog inputs: 0 to 2.5 Vdc; 0 to 5 Vdc; 0 to 10 Vdc; 4-20 mA Hobo stats: http://www.onsetcomp.com/products/data-loggers/u12-006 Analog channels: 0 to 2.5 Vdc; 0 to 5 Vdc; 0 to 10 Vdc; 4-20 mA Accuracy (logger only): ± 2 mV ± 2.5% of absolute reading; ± 2 mV ± 1% of reading for logger-powered sensors Resolution: 0.6 mV Sample Rate: 1 second to 18 hours, user selectable Time accuracy: ± 1 minute per month at 25°C (77°F), see Plot A Operating range: -20 to 70°C (-4° to 158°F) Operating temperature: Logging: -20° to 70°C (-4° to 158°F) Launch/readout: 0° to 50°C (32° to 122°F), per USB specification Humidity range: 0 to 95% RH, non-condensing

Question by hydronics    |  last reply


Gs to Speed Converstion

I am looking for the math equation that converts G load to speed using Arduino (https://www.adafruit.com/products/2796)?  I am building a high power rocket data logger/controller. I need to know the speed by using accelerate of the bird. Yes I might be able to use GPS info, but at super sonic speed GPS can not keep track of the speed. The bird is a 2 stage bird. I want to stage when about 40% of the speed has bleed off.  Thanks Rocket Nut

Topic by Rocket Nut    |  last reply


CO2 analyzer (sensor)

Dear friends My research topic is about designing a chemical reactor for CO2 capture. I have designed an experimental reactor and I need to measure the concentration of CO2 in the outlet of the reactor. Accordingly, I need a CO2 analyzer (CO2 sensor) that would be able to measure the concentration of CO2 and record it in the computer. I have searched google, but I have not found too many products that can be used in my research. Could you inform me if you know any CO2 analyzer or sensor that meets the following criteria: 1) I need to record the variations in CO2 concentration in short periods of time, for example every 20 sec. The analyzer should have a data acquisition system or can be connected to data logger to record the data in the computer. 2) I need to change the flow rates every time I begin the experiment. The range of flow rate will be between 1 to 5 Lit/min. The flow gas usually contains 25% of CO2. While I appreciate your kind attention, I look forward to hearing from you soon. Best regards Saeb

Question by sbesarati    |  last reply


Connect ESP8285 Development Board IOT to temperature, pH and DO probes

Instructable had this great article on how to connect several sensors from Atlas Scientific to the Arduino MEGA 2560 board. See here:How-to-Make-a-Data-Logger-for-the-Temperature-PH-a/Unfortunately the 2560 does not have Wifi.I was wondering whether there is a similar write-up on connecting the same Atlas Scientific temp-, DO- and pH probes to the new ESP8285 IOT board, which does have Wifi. See here for detail:ESP8285 IOT BoardIt would be a great day if I can get some instructions and help on how-to as this is my first project of this nature. :)

Question by achaninau    |  last reply


10% off featured Adafruit kits for pro members only! Extended to AUGUST!

UPDATE: 10% off featured Adafruit kits for pro members only! Extended to AUGUST! We (Adafruit industries) are tying an experiment with Instructables. If you're a pro member (you are if you're reading this) we are offering 10% off our 6 kits/projects that are featured here on Instructables. Here are the kits and below, how to get 10% off (just enter INST10 on checkout at adafruit.com) Data logger: https://www.instructables.com/id/Logger-Shield-Datalogging-for-Arduino/ Tweet-a-watt - How to make a twittering power meter... https://www.instructables.com/id/Tweet-a-watt-How-to-make-a-twittering-power-mete/ TV-B-Gone Kit https://www.instructables.com/id/TV-B-Gone-Kit/ Proto Shield https://www.instructables.com/id/Proto-Shield/ XBee adapter https://www.instructables.com/id/XBee-adapter/ Drawdio! https://www.instructables.com/id/Drawdio/ All you need to do is enter the code (INST10) on checkout at Adafruit - this code can be used once per pro member. If this works out well for pro members and for Adafruit we'll do more with more kits! if you have any questions post them up here and/or email support@adafruit.com

Topic by adafruit    |  last reply


Zener Diode to regulate solar voltage

I'm new to electronics, and I'm having trouble with varying voltage. I'm running a 6V solar panel through a charge controller, and out to a lithium battery (3.7V) and a load (3.7V), in this case a GPS data logger. My issue is the varying voltage to the GPS. The GPS works perfectly off the battery (constantly diminishing voltage), but when the solar panel kicks in the voltage increases, the GPS thinks it is being charged, and switches off. The GPS will work on any voltage above 2.75V I was wondering if I put a 3V zener diode in series between the charge controller and the GPS, would this keep the voltage at a constant 3V even if the solar panel is producing the 5V needed to charge the lithium battery?  I hope this makes sense Thanks

Topic by blakea    |  last reply


temperature logging with raspberry pi

New here, and to Pi/Python looking to log data from a few different sensors from Atlas Scientific (RTD & PH).  I've gotten really stuck so fare in getting these going and was wondering if anyone here can help me out.  so far I've used this code:  import smbus import time import datetime #SMBus(0) - Raspberry Pi Model A #SMBus(1) - Raspberry Pi Model B bus = smbus.SMBus(1) #I2C address of sensor address = 0x66 def temperature():     rvalue0 = bus.read_word_data(address,0)     rvalue1 = (rvalue0 & 0xff00) >> 8     rvalue2 = rvalue0 & 0x00ff     rvalue = (((rvalue2 * 256) + rvalue1) >> 4 ) *.0625     #print rvalue1, rvalue2     return rvalue print("Temperature Data Logger\n") while True:         #Open Log File     f=open('tempdata.txt','a')     now = datetime.datetime.now()     timestamp = now.strftime("%Y/%m/%d %H:%M")     outvalue = temperature()     outstring = str(timestamp)+"  "+str(outvalue)+" C "+str(outvalue*1.8+32)+" F"+"\n"     print outstring     f.write(outstring)     f.close()     #log temperature every 10 seconds     time.sleep(10) I've got the two sensor boards connected to the raspberry pi 3 mounted via a Whitebox Tentacle T3.   The boards are in i2c mode and i can see them using sudo i2cdetect -y 1 (they show up address 63 and 66)  but when i run this program above I just get a red error light when it reads the temperature.   The log file reports a measurement of 2C and 35.2F which is not correct but the red light on the board tells me that the Pi is trying to connect with it.   Anyone able to help?

Topic by Chair_t  


First project completed...now let's expand it!

My wife is interested in ghost hunting shows like TAPS and Ghost Hunters International. She even joined a local Paranomal Society. The first thing she wanted to buy was an EMF detector for a whopping $175. Now, I don't believe in ghosts, but I support my wife, so instead of buying her an OTS EMF detector, I decided to build her this one. Thanks Computergeek! Oddly, the first thing that popped into my head when I finished building the Arduino EMF detector was a quote from Keano Reeves from Point Break, "I caught my first tube today....Sir." It's appropriate though, in the sense that he was just getting started in the bank robbery investigations. I'm pretty happy with this build...I had a couple of issues in hardware and code that I was able to troubleshoot myself. And it all works! So this was pretty easy, even for a newbie. Now, what I want to do is add a data logger that records values to flash memory. You can probably see where I'm going with this (as a non-believer). If you remove the human element from the situation, is there still paranomal activity? Or put another way, if a tree falls down in the middle of the forest and no one is around to hear it...does it still make noise? If anyone has any ideas, tips, or suggesstions, I'd love to hear them. Thanks for a great online community! LorienD  

Topic by LorienD