Hi there this is a general question about how other people are doing their projects, in particular;
Frequency of sampling data
Typical packet size of transmission
I’ve built a prototype that sends to around 10 channels every 10 minutes packet size range from 11 to 20kb, but on average ate 16 kb.
I’ve also done some calcs;
Where I’m based in Peru costs is $0.85 / MB
So cost per kb = 0.85 / 1024 = $0.00083 (assumption 1024 kb in a MB)
Posts per hour = 6
Number of posts per day = 6 * 24 = 144
cost per day = 144 * 0.00083 * 16kb = $1.91
Project Monthly cost = $57,37 + 0.40 for monthly charges
I must be doing something really inefficent with the data, as this is not financially viable, why would anyone use a pay per MB sim? Even if I reduce my transmissions to once an hour my calcs give $9.56
I’d really like to hear about your projects, how often you send, and the size of your data packets. I appreciate I must be doing something wrong in my prototype as my costs don’t make sense.
Background on my project: Arduino Uno with 6 Analogue inputs, connected to a Raspberry Pi, running Node Red to calculate average values, and transmit to the web via a 3G modem dongle, data being sent to ThingSpeak.com account