Questions tagged [datalogging]
logging data into some storage or memory
122 questions
0
votes
0
answers
248
views
How can I save an image from the ESP32-CAM to a separate SD card?
For a project, I need to take a picture with the ESP32-CAM, save it to an SD card, and then have the Arduino UNO access the image. I have the ESP32-CAM with OV2640 connected to the ESP32-CAM-MB, which ...
4
votes
1
answer
1k
views
Connecting pressure sensor to Arduino to collect pressure and time data
I'm trying to build a pressure data logger using an Arduino and Mindman MP47P-03-F1 (https://www.mindman.com.tw/proimages/pdf/E_MP47_S.pdf) pressure sensor, the sensor is connected to an outer 12-24 ...
- 49
1
vote
1
answer
273
views
Modbus rtu server library which logs the requests
Kindly seek help. In my project I want to ‘fake’ a smart meter via Modbus rtu server for a solis inverter.
Somehow the solis realizes that I am faking him, so I am wondering which Modbus rtu server ...
- 21
1
vote
0
answers
60
views
Why is this buffer not being sent to the server?
I'm loading a buffer with different data recorded by sensors and sending them to a server. But I also wanted to log when the data was sent on the client side, so I formatted the time of my RTC clock ...
- 33
0
votes
3
answers
66
views
How do you deal with balancing the limited storage of Arduino with the decrease in speed if you just print everything as it gets measured?
I am working on a simple data acquisition system based on an Arduino Uno. Each run would ideally collect up to 10k data points (all doubles). Obviously, the Arduino doesn't have the capacity to hold ...
- 101
0
votes
1
answer
2k
views
how can I delete contents of an SD card in arduino?
I have a datafile, datalog.txt I can open, read and write cool. What is the best way to delete all the file contents?
Should I try rewriting the SD card file with NULL data?
I have been reading the &...
- 902
1
vote
0
answers
89
views
RTC shield with LCD and Keypad
I am having issues with a code that I have been modifying.
I can change the TIME, and DATE from a keypad, and see the data on the serial monitor, but it is not recording on the SD Card. Anyone that ...
- 31
1
vote
2
answers
52
views
Can UNO log more PCB 353b33 accelerometer data points compared to TDS3014B oscilloscope?
I'm currently recording data points from an analog accelerometer(PCB 353b33) using a TDS3014B oscilloscope which has Record Length of 10,000 points at a Sample Rate 1.25 Ga/s. I'm want to record more ...
-1
votes
1
answer
126
views
HTTP-POST returns 400 when posting a value from the sensor
I'm trying to POST the data of total, but it returns 400. but when I try a sample data like
int httpResponseCode = http.POST("{\"amount\":\"total\"}"); (400)
into
int ...
- 17
1
vote
0
answers
194
views
Can I record us (microseconds) with AnalogBinLogger example in SdFat's library?
I am using the AnalogBinLogger from the SdFat example library. I am using it to record 8 analog channels at 5kHz! which is amazing (thank you SdFat).
Is it possible to include a separate column to ...
- 115
1
vote
0
answers
53
views
Problem with data logging in arduino environment
iam recently making a projects that include arduino, mpu6050 and bmp280 and finally i have to log that data so, iam using a microSD card module
info of the the microSD card:
Initializing SD card......
- 11
1
vote
0
answers
123
views
Transfer analog value via Bluetooth HC-05 (master) to second HC-05 (slave)
II have setup a UNO and a HC-05 Bluetooth module as a 'Slave', and a NANO and an HC-05 Bluetooth module as 'Master', I believe the comm's work ok as I am receiving values and text, but the analog IN ...
- 11
1
vote
0
answers
195
views
How to separate in columns the data contained in a barcode
I have the following code, which allows me by scanning a typical 128 barcode to write this code in SD card under the Header "FA" as well as the time and date of scanner under the Header &...
- 111
-1
votes
1
answer
45
views
acelermetor count goes down after 1 peak
I am using a Wemos D1 Mini and an mpu 6050 accelerametor. I managed to get the acceleratmetor to work and have 1 value come out of movements. So when a peak it hit (aka, the threshold of 1.00 is hit) ...
- 21
1
vote
0
answers
192
views
Using SMS to send commands to the Arduino. Having problems in data parsing
I'm still inexperienced in programming and i apologize in advance if my mistakes are stupidly obvious. This sketch I'm working on is a basic GSM project using SIM900a Mini and an Arduino UNO that ...
- 11
0
votes
2
answers
183
views
data classification with arduino
I want to classify my data from 3 sensors with arduino so that every time i enter the specific date or hour, or also it can be a period of time like 10 days ago, it shows me the exact data. In other ...
- 37
-1
votes
1
answer
119
views
sending specific date's data from data logger shield to serial port
I was wondering if it is possible to save lots of data( exp: one year data) in data logger shield and then read them from serial port without ejecting the SD card... this part of my question is fine......
- 37
2
votes
2
answers
1k
views
EEPROM.get returns bad data
I am using the attached code.
What I am trying to do is:
Test if there is a personalized "board serial number" written in the EEPROM (by previous code run)
If data found was not 7 characters (e.g SN-...
- 252
1
vote
4
answers
485
views
How to manage two alarms with one interrupt?
I have a datalogger using the RTC DS3231 as an interrupt generator. I am able to have the interrupts work but here is my problem. I would like to take 2 separate measures from 2 different sensors (one ...
- 75
1
vote
0
answers
6k
views
Using CoolTerm to receive Serial Data into a saveable file
Have functional code that reads data from sensors. Found that I need to use a terminal program to grab the data from the serial output using CoolTerm by Roger Meier.
Wasn't able to test it with my ...
4
votes
2
answers
765
views
Writing to sd card with a sampling rate 50ms or less? I have a sketch that writes to sd every 1s but jams at faster sampling rates. Please help?
My code below reads data from an ADC and 3 digital pins via a Mega and prints to an SD Shield (Deek Robot). I want to be able to read the data every 50ms (20ms ideally). I can't get below 250ms.
I've ...
- 115
0
votes
1
answer
453
views
Does LabVIEW Linx affect the communication speed with Arduino?
I am using LabVIEW to connect to Arduino Mega. I control a logic gate to switch the current On/Off and at the same time there is an I2C connection with a sensor. It came to my attention that the ...
- 103
0
votes
1
answer
1k
views
creating HTTP persistent connection, to create 'smooth' data over GSM sending
Project goals
Send data over GSM to firebase
Fast sampling - need to send 16 bytes every half second to firebase
Send data using GET or POST to server with PHP script, that redirect data to firebase
...
0
votes
1
answer
130
views
Can't store RFID data in the next 5 bytes of array
I'm working on RFID project to handle multiple cards.
I did most of the things OK. But now I have one problem. Which is the following:
The RFID code is 5 bytes, so I need an array of 5 bytes. If more ...
- 283
0
votes
1
answer
173
views
Arduino stops logging data after ~32761 seconds
I made a small set up to log temperature on SD card, everything is running smoothly until it reach 9:06:01 of logging that is 32761 seconds. I know that corresponds roughly to the maximum value of an ...
- 17