EzloPi build a Temperature Sensor with open source

[melih]

New Version of EzloPi is now out.
You can use this Open Source Firmware to turn any hardware device into a Smart Hardware device. Its ESP firmware at the moment, more to come.

Documentation and Knowledge Base Forum | Ezlopi

here is the full Source code and an example of how to build a Temperature Sensor.

EzloPi ADC TM36 Example - EzloPi

We will continue to expand the platform and add more examples.

[cw-kid]

Any news about support for the DS18B20 temp sensors?

I’ve used DS18B20 temp sensors before with some Z-Wave devices that support them.

Thanks.

[curiousB]

I did one with an ESP32 mini. Then its set up as a IP Device under Ezlo.

A DIY General Purpose WiFi (IP) Based IO Module for Ezlo

[ESP32 Temp] [Temp ESP32] Picked up a handful of ESP32 minis and hermetically sealed DS18B20 temp probes $9.51 for the both. Added an old USB charger and a cord and I have a WiFi based temp probe. Just loaded my IO Module Arduino code on the ESP32 but only the temp probe portion is getting any usage. The probe with a cord is needed because the ESP32 has a heat profile that throws off the temp reading if the sensor is within 10" (250mm) of the ESP32. It is polled by Ezlo Plus from an IP Device…

Ezlo polls the ESP32 with a GET and then the IP template parses the response string to stuff the temperature reading into a temp probe device.

The code to read the sensor is trivial once you load the Dallas Semi library, just a couple lines to initialize and read the probe(s). Would be easy to make this native in Ezlo Pi.

Init Section:
#include <OneWire.h>
#include <DallasTemperature.h>

// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
OneWire oneWire(ONE_WIRE_BUS);

// Pass our oneWire reference to Dallas Temperature.
DallasTemperature sensors(&oneWire, ONE_WIRE_PULLUP);

---

sensors.requestTemperatures(); // Goes out and polls all the attached DS18B20 Sensors attached and each gets a row in the output
for (int i = 0; i < sensors.getDeviceCount(); i++) {
row = "Temperature P ";
row += String(i + 1);
}

[cw-kid]

@curiousB I was just sent some ESP32 boards to play around with, not sure of their exact type yet. Other than they are 30 pin.

But I might be asking you some questions in the coming weeks if you don’t mind? As reading some of the “EzloPi” threads you seem pretty knowledgeable on this topic.

I need to order some breadboards and pinout cables though, any recommendation on the type of breadboards to use ? I also need to order various sensors and peripherals to try, like buttons, relays, temp sensors, presence sensors etc, before I can get started.

Thanks