Hello I have a question about reading Sensor datas with Node-Red and the Raspberry Pi. I watched some Youtube Videos, and the most of them have the Grove Pi addition to connect there Sensors. Now i want to ask if i need this Grove Pi or can i connect the Sensors directly with the Raspberry Pi and…

Also note that Peter Scargill has a solution to this where he has a total home control system written around NR and RPis. He provides a firmware download for the Nano that turns it into a glorified peripheral expansion for the Pi - very easy to use and come to grips with and gives you thes best of b…

@scargill 's blog is definitely a good source of some fun ideas.

My plan is to have the "arduino" out by my pool and the RP inside. I'm hesitant to have a wifi device out there for a few reasons, and was hoping to use serial, but I will look at other options. Right now, I'm able to control it via serial connection and getting accurate values from the arduino in…

Serial over any distance brings issues of its own though depending on your location, WiFi with an ESP8266 might be a little exposed, mostly it should be ok. If you want more security, you should move to an ESP32 which has an onboard security processor and so can cope with TLS encryption without issu…

[image] TotallyInformation: For serial over any distance, you'll need to think about wire resistance, voltage losses, external interference (the wire acts as an Arial and can generate an appreciable voltage due to radio interference), lightning strikes and lawnmowers/spades/dogs :slight_smile: W…

And a 6-10m length of unscreened cable will have some "interesting" characteristics, especially if you live near a large radio mast :smile: I used to live not that far away from the masts that powered BBC Radio 4 and some world service broadcasts. Lots of local stories about peoples radiators and e…

My serial run will be pretty short. That being said, the esp8266 is interesting. What are the analog read capabilities of those boards?

Looks like the esp32 has more analog inputs. Any words of wisdom on going that route?

There's an MQTT library for ESP32 that supports https, which is arguably an excellent way to send your telemetry.

Node-Red Sensors

Hardware

dynamicdave 21 August 2019 17:01 24

It has a single 10-bit ADC channel on the A0 pin.
You can connect an ADS1115 device to it using I2C which will give you four extra 16-bit analog channels.

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Node-Red Sensors

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