Temp and moisture logging [MALTING]

SHvanBommel · Feb 17, 2016

There wasn't anywhere else to post this. I'm looking to log temp and moisture. I've already got the temp logging figured out. using DS-18b20's i'm adding temps to a SQLite database. Now i'm having trouble logging moisture. they are analog so there's a good chance they need to go through an arduino in order to translate from analog to digital but i don't know how to get from the arduino into my sqlite db. any help would be greatly appreciated.

jlongstreet · Feb 17, 2016

Over serial?

SHvanBommel · Feb 17, 2016

See this is what I don't know. I've seen various projects out there where people are serving up data to a raspi from an arduino but I don't know how to get the data to go to a database on the raspi

FuzzeWuzze · Feb 22, 2016

This literally took me 15 seconds to find on google.

http://www.instructables.com/id/Save-data-of-temperature-and-humidity-on-MySQL-wit/?ALLSTEPS

If you dont want to use a Wifly you'd need to replace that code with code using an Ethernet shield or something.

SHvanBommel · Feb 22, 2016

Yeah I found this already. I'm looking for something that will transfer the moisture sensor data over serial to a pi that is already connected to the network and already is storing the database and acting as Web server. This is a good approach but is neither cost effective or efficient.

dyqik · Feb 22, 2016

What do you mean by "moisture"?

If you mean humidity, there are combined humidity and temperature 1-wire sensors, DHT-22 or DHT-11, easily available. Adafruit has example codoe for talking to them from Arduino, and they'll happily talk to a Pi as well. Unfortunately they aren't Dallas 1-wire compatible, so they need to live on their own circuit.

If you mean something like soil moisture, then there are analog sensors out there, but they'll need an ADC to talk to. e.g. http://www.instructables.com/id/Soil-Moisture-Sensor-1/