Mixing
Options for cheap and “open†wireless thermometer/humidity sensors
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I'm starting to explore IoT in my home, the first step being to connect a raspberry pi 3 B+ to a DHT22 temp/humidity, record DHT readings in a database which I then surf via a node server running on the pi. All good.
I got help from e.g.: http://www.circuitbasics.com/how-to-set-up-the-dht11-humidity-sensor-on-the-raspberry-pi/
I'd like to broaden this now to add some cheap wireless temperature/humidity sensors, but most of the ones I've found appear to be locked to their manufacturer, e.g. Xiomi.
The answer to this question suggests connecting a RF module to the pi to receive data from sensors. This instructable also seems promising, suggesting purchasing these transmitter/receivers.
So maybe I'd be able to connect something like this sensor to such a setup?
Will using RF 433MHz be a good way for me to keep costs down?
smart-home raspberry-pi rfid
asked 2 hours ago
minisaurus
1062
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minisaurus is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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up vote
1
down vote
favorite
I'm starting to explore IoT in my home, the first step being to connect a raspberry pi 3 B+ to a DHT22 temp/humidity, record DHT readings in a database which I then surf via a node server running on the pi. All good.
I got help from e.g.: http://www.circuitbasics.com/how-to-set-up-the-dht11-humidity-sensor-on-the-raspberry-pi/
I'd like to broaden this now to add some cheap wireless temperature/humidity sensors, but most of the ones I've found appear to be locked to their manufacturer, e.g. Xiomi.
The answer to this question suggests connecting a RF module to the pi to receive data from sensors. This instructable also seems promising, suggesting purchasing these transmitter/receivers.
So maybe I'd be able to connect something like this sensor to such a setup?
Will using RF 433MHz be a good way for me to keep costs down?
smart-home raspberry-pi rfid
asked 2 hours ago
minisaurus
1062
New contributor
minisaurus is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |Â
up vote
1
down vote
favorite
up vote
1
down vote
favorite
I'm starting to explore IoT in my home, the first step being to connect a raspberry pi 3 B+ to a DHT22 temp/humidity, record DHT readings in a database which I then surf via a node server running on the pi. All good.
I got help from e.g.: http://www.circuitbasics.com/how-to-set-up-the-dht11-humidity-sensor-on-the-raspberry-pi/
I'd like to broaden this now to add some cheap wireless temperature/humidity sensors, but most of the ones I've found appear to be locked to their manufacturer, e.g. Xiomi.
The answer to this question suggests connecting a RF module to the pi to receive data from sensors. This instructable also seems promising, suggesting purchasing these transmitter/receivers.
So maybe I'd be able to connect something like this sensor to such a setup?
Will using RF 433MHz be a good way for me to keep costs down?
smart-home raspberry-pi rfid
asked 2 hours ago
minisaurus
1062
New contributor
minisaurus is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I'm starting to explore IoT in my home, the first step being to connect a raspberry pi 3 B+ to a DHT22 temp/humidity, record DHT readings in a database which I then surf via a node server running on the pi. All good.
I got help from e.g.: http://www.circuitbasics.com/how-to-set-up-the-dht11-humidity-sensor-on-the-raspberry-pi/
I'd like to broaden this now to add some cheap wireless temperature/humidity sensors, but most of the ones I've found appear to be locked to their manufacturer, e.g. Xiomi.
The answer to this question suggests connecting a RF module to the pi to receive data from sensors. This instructable also seems promising, suggesting purchasing these transmitter/receivers.
So maybe I'd be able to connect something like this sensor to such a setup?
Will using RF 433MHz be a good way for me to keep costs down?
smart-home raspberry-pi rfid
smart-home raspberry-pi rfid
asked 2 hours ago
minisaurus
1062
New contributor
minisaurus is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 2 hours ago
minisaurus
1062
New contributor
minisaurus is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 2 hours ago
minisaurus
1062
New contributor
minisaurus is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 2 hours ago
minisaurus
1062
asked 2 hours ago
minisaurus
1062
1062
New contributor
minisaurus is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
minisaurus is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
minisaurus is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |Â
add a comment |Â
2 Answers
2
active
oldest
votes
up vote
2
down vote
My solution to this was to use ESP8266 boards with various temp sensors like a TMP102 or LM75A. The ESP chips then send their data using MQTT to a Pi which is running Home Assistant.
Here are some links that might help:
https://www.hackster.io/colinodell/mqtt-temperature-and-humidity-monitor-for-home-assistant-27b8d1
https://www.home-assistant.io/blog/2015/10/11/measure-temperature-with-esp8266-and-report-to-mqtt/
edited 15 mins ago
anonymous2♦
3,3522836
answered 42 mins ago
Garrett Banuk
211
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Garrett Banuk is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |Â
up vote
1
down vote
As always with a wireless solution, the critical parameters for selecting a solution are required range and power consumption.
You might be able to identify a cheaper pair of sensors, or even find a MCU which is integrated with the sensors you need (and a radio) if you're lucky.
The sensors you found seem to simply broadcast digital data continuously, so whilst you could connect one of these to a 433 MHz transmitter, you will only get one channel.
A more standard approach would be to use a Wifi/BLE/ZigBee/ah-hoc wireless module which exposes a limited amount of spare processing power, and use the wireless module to control when to send data samples. These modules come in at $2-3 (wifi seems cheaper than BLE) and ought to be suitable for battery power applications. You will of course need to learn a new software/toolchain approach, but with luck your endpoint application is a simple example which you can just import with minimal modification.
Once you accept an MCU into your endpoint, you can use any sensor, using a 'single pin self timed', SPI/I2C digital interface, or even an analogue input if you find a device with a spare ADC input. In fact, there is a wide range of options which will allow you to try and compete with this pre-built ESP8266 implementation, but you will struggle to come in at better than the sort of prices that Xiomi are achieving. I guess that the device I linked there is 'open' to some extent, but need to wait and see.
answered 2 hours ago
Sean Houlihane
8,56511251
Thanks @Sean Houliane, do you mean a solution something like this: tzapu.com/… ?
– minisaurus
1 hour ago
Yes, although note there that it's identified that there are problems with trying to deep-sleep the device.
– Sean Houlihane
1 hour ago
Or maybe this setup? - opensource tho' not so cheap openenergymonitor.com/emonbase-web-connected-base-station openenergymonitor.com/emonth-v2-temperature-humidity-node
– minisaurus
1 hour ago
Yes, lots of choice. Some trade offs in how much electronics/software you want to take on, and where your interest really lies.
– Sean Houlihane
1 hour ago
My interest is mostly hobby (even slightly study related), I also like that so far I've coded everything apart from the AdaFruit driver for the DHT22 - I was a C programmer in the '90s :) However my electronics skills are almost non-existent, but the soldering-up side of the tzapu thing looks like fun, but I'm a bit worried that I'd buy the wrong stuff!
– minisaurus
35 mins ago
add a comment |Â
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
2
down vote
My solution to this was to use ESP8266 boards with various temp sensors like a TMP102 or LM75A. The ESP chips then send their data using MQTT to a Pi which is running Home Assistant.
Here are some links that might help:
https://www.hackster.io/colinodell/mqtt-temperature-and-humidity-monitor-for-home-assistant-27b8d1
https://www.home-assistant.io/blog/2015/10/11/measure-temperature-with-esp8266-and-report-to-mqtt/
edited 15 mins ago
anonymous2♦
3,3522836
answered 42 mins ago
Garrett Banuk
211
New contributor
Garrett Banuk is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |Â
up vote
2
down vote
My solution to this was to use ESP8266 boards with various temp sensors like a TMP102 or LM75A. The ESP chips then send their data using MQTT to a Pi which is running Home Assistant.
Here are some links that might help:
https://www.hackster.io/colinodell/mqtt-temperature-and-humidity-monitor-for-home-assistant-27b8d1
https://www.home-assistant.io/blog/2015/10/11/measure-temperature-with-esp8266-and-report-to-mqtt/
edited 15 mins ago
anonymous2♦
3,3522836
answered 42 mins ago
Garrett Banuk
211
New contributor
Garrett Banuk is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |Â
up vote
2
down vote
up vote
2
down vote
My solution to this was to use ESP8266 boards with various temp sensors like a TMP102 or LM75A. The ESP chips then send their data using MQTT to a Pi which is running Home Assistant.
Here are some links that might help:
https://www.hackster.io/colinodell/mqtt-temperature-and-humidity-monitor-for-home-assistant-27b8d1
https://www.home-assistant.io/blog/2015/10/11/measure-temperature-with-esp8266-and-report-to-mqtt/
edited 15 mins ago
anonymous2♦
3,3522836
answered 42 mins ago
Garrett Banuk
211
New contributor
Garrett Banuk is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
My solution to this was to use ESP8266 boards with various temp sensors like a TMP102 or LM75A. The ESP chips then send their data using MQTT to a Pi which is running Home Assistant.
Here are some links that might help:
https://www.hackster.io/colinodell/mqtt-temperature-and-humidity-monitor-for-home-assistant-27b8d1
https://www.home-assistant.io/blog/2015/10/11/measure-temperature-with-esp8266-and-report-to-mqtt/
edited 15 mins ago
anonymous2♦
3,3522836
answered 42 mins ago
Garrett Banuk
211
New contributor
Garrett Banuk is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 15 mins ago
anonymous2♦
3,3522836
edited 15 mins ago
anonymous2♦
3,3522836
edited 15 mins ago
anonymous2♦
3,3522836
3,3522836
answered 42 mins ago
Garrett Banuk
211
New contributor
Garrett Banuk is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered 42 mins ago
Garrett Banuk
211
answered 42 mins ago
Garrett Banuk
211
211
New contributor
Garrett Banuk is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Garrett Banuk is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Garrett Banuk is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |Â
add a comment |Â
up vote
1
down vote
As always with a wireless solution, the critical parameters for selecting a solution are required range and power consumption.
You might be able to identify a cheaper pair of sensors, or even find a MCU which is integrated with the sensors you need (and a radio) if you're lucky.
The sensors you found seem to simply broadcast digital data continuously, so whilst you could connect one of these to a 433 MHz transmitter, you will only get one channel.
A more standard approach would be to use a Wifi/BLE/ZigBee/ah-hoc wireless module which exposes a limited amount of spare processing power, and use the wireless module to control when to send data samples. These modules come in at $2-3 (wifi seems cheaper than BLE) and ought to be suitable for battery power applications. You will of course need to learn a new software/toolchain approach, but with luck your endpoint application is a simple example which you can just import with minimal modification.
Once you accept an MCU into your endpoint, you can use any sensor, using a 'single pin self timed', SPI/I2C digital interface, or even an analogue input if you find a device with a spare ADC input. In fact, there is a wide range of options which will allow you to try and compete with this pre-built ESP8266 implementation, but you will struggle to come in at better than the sort of prices that Xiomi are achieving. I guess that the device I linked there is 'open' to some extent, but need to wait and see.
answered 2 hours ago
Sean Houlihane
8,56511251
Thanks @Sean Houliane, do you mean a solution something like this: tzapu.com/… ?
– minisaurus
1 hour ago
Yes, although note there that it's identified that there are problems with trying to deep-sleep the device.
– Sean Houlihane
1 hour ago
Or maybe this setup? - opensource tho' not so cheap openenergymonitor.com/emonbase-web-connected-base-station openenergymonitor.com/emonth-v2-temperature-humidity-node
– minisaurus
1 hour ago
Yes, lots of choice. Some trade offs in how much electronics/software you want to take on, and where your interest really lies.
– Sean Houlihane
1 hour ago
My interest is mostly hobby (even slightly study related), I also like that so far I've coded everything apart from the AdaFruit driver for the DHT22 - I was a C programmer in the '90s :) However my electronics skills are almost non-existent, but the soldering-up side of the tzapu thing looks like fun, but I'm a bit worried that I'd buy the wrong stuff!
– minisaurus
35 mins ago
add a comment |Â
up vote
1
down vote
As always with a wireless solution, the critical parameters for selecting a solution are required range and power consumption.
You might be able to identify a cheaper pair of sensors, or even find a MCU which is integrated with the sensors you need (and a radio) if you're lucky.
The sensors you found seem to simply broadcast digital data continuously, so whilst you could connect one of these to a 433 MHz transmitter, you will only get one channel.
A more standard approach would be to use a Wifi/BLE/ZigBee/ah-hoc wireless module which exposes a limited amount of spare processing power, and use the wireless module to control when to send data samples. These modules come in at $2-3 (wifi seems cheaper than BLE) and ought to be suitable for battery power applications. You will of course need to learn a new software/toolchain approach, but with luck your endpoint application is a simple example which you can just import with minimal modification.
Once you accept an MCU into your endpoint, you can use any sensor, using a 'single pin self timed', SPI/I2C digital interface, or even an analogue input if you find a device with a spare ADC input. In fact, there is a wide range of options which will allow you to try and compete with this pre-built ESP8266 implementation, but you will struggle to come in at better than the sort of prices that Xiomi are achieving. I guess that the device I linked there is 'open' to some extent, but need to wait and see.
answered 2 hours ago
Sean Houlihane
8,56511251
Thanks @Sean Houliane, do you mean a solution something like this: tzapu.com/… ?
– minisaurus
1 hour ago
Yes, although note there that it's identified that there are problems with trying to deep-sleep the device.
– Sean Houlihane
1 hour ago
Or maybe this setup? - opensource tho' not so cheap openenergymonitor.com/emonbase-web-connected-base-station openenergymonitor.com/emonth-v2-temperature-humidity-node
– minisaurus
1 hour ago
Yes, lots of choice. Some trade offs in how much electronics/software you want to take on, and where your interest really lies.
– Sean Houlihane
1 hour ago
My interest is mostly hobby (even slightly study related), I also like that so far I've coded everything apart from the AdaFruit driver for the DHT22 - I was a C programmer in the '90s :) However my electronics skills are almost non-existent, but the soldering-up side of the tzapu thing looks like fun, but I'm a bit worried that I'd buy the wrong stuff!
– minisaurus
35 mins ago
add a comment |Â
up vote
1
down vote
up vote
1
down vote
As always with a wireless solution, the critical parameters for selecting a solution are required range and power consumption.
You might be able to identify a cheaper pair of sensors, or even find a MCU which is integrated with the sensors you need (and a radio) if you're lucky.
The sensors you found seem to simply broadcast digital data continuously, so whilst you could connect one of these to a 433 MHz transmitter, you will only get one channel.
A more standard approach would be to use a Wifi/BLE/ZigBee/ah-hoc wireless module which exposes a limited amount of spare processing power, and use the wireless module to control when to send data samples. These modules come in at $2-3 (wifi seems cheaper than BLE) and ought to be suitable for battery power applications. You will of course need to learn a new software/toolchain approach, but with luck your endpoint application is a simple example which you can just import with minimal modification.
Once you accept an MCU into your endpoint, you can use any sensor, using a 'single pin self timed', SPI/I2C digital interface, or even an analogue input if you find a device with a spare ADC input. In fact, there is a wide range of options which will allow you to try and compete with this pre-built ESP8266 implementation, but you will struggle to come in at better than the sort of prices that Xiomi are achieving. I guess that the device I linked there is 'open' to some extent, but need to wait and see.
answered 2 hours ago
Sean Houlihane
8,56511251
As always with a wireless solution, the critical parameters for selecting a solution are required range and power consumption.
You might be able to identify a cheaper pair of sensors, or even find a MCU which is integrated with the sensors you need (and a radio) if you're lucky.
The sensors you found seem to simply broadcast digital data continuously, so whilst you could connect one of these to a 433 MHz transmitter, you will only get one channel.
A more standard approach would be to use a Wifi/BLE/ZigBee/ah-hoc wireless module which exposes a limited amount of spare processing power, and use the wireless module to control when to send data samples. These modules come in at $2-3 (wifi seems cheaper than BLE) and ought to be suitable for battery power applications. You will of course need to learn a new software/toolchain approach, but with luck your endpoint application is a simple example which you can just import with minimal modification.
Once you accept an MCU into your endpoint, you can use any sensor, using a 'single pin self timed', SPI/I2C digital interface, or even an analogue input if you find a device with a spare ADC input. In fact, there is a wide range of options which will allow you to try and compete with this pre-built ESP8266 implementation, but you will struggle to come in at better than the sort of prices that Xiomi are achieving. I guess that the device I linked there is 'open' to some extent, but need to wait and see.
answered 2 hours ago
Sean Houlihane
8,56511251
answered 2 hours ago
Sean Houlihane
8,56511251
answered 2 hours ago
Sean Houlihane
8,56511251
answered 2 hours ago
Sean Houlihane
8,56511251
8,56511251
Thanks @Sean Houliane, do you mean a solution something like this: tzapu.com/… ?
– minisaurus
1 hour ago
Yes, although note there that it's identified that there are problems with trying to deep-sleep the device.
– Sean Houlihane
1 hour ago
Or maybe this setup? - opensource tho' not so cheap openenergymonitor.com/emonbase-web-connected-base-station openenergymonitor.com/emonth-v2-temperature-humidity-node
– minisaurus
1 hour ago
Yes, lots of choice. Some trade offs in how much electronics/software you want to take on, and where your interest really lies.
– Sean Houlihane
1 hour ago
My interest is mostly hobby (even slightly study related), I also like that so far I've coded everything apart from the AdaFruit driver for the DHT22 - I was a C programmer in the '90s :) However my electronics skills are almost non-existent, but the soldering-up side of the tzapu thing looks like fun, but I'm a bit worried that I'd buy the wrong stuff!
– minisaurus
35 mins ago
add a comment |Â
Thanks @Sean Houliane, do you mean a solution something like this: tzapu.com/… ?
– minisaurus
1 hour ago
Yes, although note there that it's identified that there are problems with trying to deep-sleep the device.
– Sean Houlihane
1 hour ago
Or maybe this setup? - opensource tho' not so cheap openenergymonitor.com/emonbase-web-connected-base-station openenergymonitor.com/emonth-v2-temperature-humidity-node
– minisaurus
1 hour ago
Yes, lots of choice. Some trade offs in how much electronics/software you want to take on, and where your interest really lies.
– Sean Houlihane
1 hour ago
My interest is mostly hobby (even slightly study related), I also like that so far I've coded everything apart from the AdaFruit driver for the DHT22 - I was a C programmer in the '90s :) However my electronics skills are almost non-existent, but the soldering-up side of the tzapu thing looks like fun, but I'm a bit worried that I'd buy the wrong stuff!
– minisaurus
35 mins ago
Thanks @Sean Houliane, do you mean a solution something like this: tzapu.com/… ?
– minisaurus
1 hour ago
Thanks @Sean Houliane, do you mean a solution something like this: tzapu.com/… ?
– minisaurus
1 hour ago
Yes, although note there that it's identified that there are problems with trying to deep-sleep the device.
– Sean Houlihane
1 hour ago
Yes, although note there that it's identified that there are problems with trying to deep-sleep the device.
– Sean Houlihane
1 hour ago
Or maybe this setup? - opensource tho' not so cheap openenergymonitor.com/emonbase-web-connected-base-station openenergymonitor.com/emonth-v2-temperature-humidity-node
– minisaurus
1 hour ago
Or maybe this setup? - opensource tho' not so cheap openenergymonitor.com/emonbase-web-connected-base-station openenergymonitor.com/emonth-v2-temperature-humidity-node
– minisaurus
1 hour ago
Yes, lots of choice. Some trade offs in how much electronics/software you want to take on, and where your interest really lies.
– Sean Houlihane
1 hour ago
Yes, lots of choice. Some trade offs in how much electronics/software you want to take on, and where your interest really lies.
– Sean Houlihane
1 hour ago
My interest is mostly hobby (even slightly study related), I also like that so far I've coded everything apart from the AdaFruit driver for the DHT22 - I was a C programmer in the '90s :) However my electronics skills are almost non-existent, but the soldering-up side of the tzapu thing looks like fun, but I'm a bit worried that I'd buy the wrong stuff!
– minisaurus
35 mins ago
My interest is mostly hobby (even slightly study related), I also like that so far I've coded everything apart from the AdaFruit driver for the DHT22 - I was a C programmer in the '90s :) However my electronics skills are almost non-existent, but the soldering-up side of the tzapu thing looks like fun, but I'm a bit worried that I'd buy the wrong stuff!
– minisaurus
35 mins ago
add a comment |Â
minisaurus is a new contributor. Be nice, and check out our Code of Conduct.
minisaurus is a new contributor. Be nice, and check out our Code of Conduct.
minisaurus is a new contributor. Be nice, and check out our Code of Conduct.
minisaurus is a new contributor. Be nice, and check out our Code of Conduct.
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