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Questions tagged [power-consumption]

For questions about determining, controlling or reducing the power consumption of an IoT device. Every IoT device consumes power, make sure that the power consumption is the core of the question.

5
votes
2answers
54 views

How relevant is the energy consumption of IoT and RF home devices?

I am designing and building my own house. I am very interested in automatizing several devices as blinders and lights. In general, I am thinking in using Zigbee (Xiaomi and Aqara), RF and IR devices. ...
3
votes
1answer
55 views

Distance calculation based on RSSI value

I want to calculate the RSSI value of a Bluetooth module (HC05) and from the derived RSSI value I want to calculate the distance of the surrounding devices. I'm using an Arduino Uno r3 as a controller ...
4
votes
1answer
67 views

Does powering NodeMCU with 3.3 V also power USB-UART module?

I want to power my nodemcu module with 3.3 V. Does powering it with 3.3 V also power USB-UART module? If so I do not want this as it eats the battery.
2
votes
2answers
86 views

NodeMCU connected with batteries stopped working after 2 hours

I connected nodemcu with batteries and uploaded a code which sends http post request every 10 min and goes to deep sleep. But after 2 hours node mcu stops sending the data. Voltage regulator used is ...
1
vote
1answer
62 views

Could not measure power consumption of ESP8266 module [closed]

I want to measure the power consumption of ESP8266-01. For that I connected my multi-meter in series with ESP8266 to measure the current but then ESP8266 does not power up and multi-meter gives zero.
10
votes
2answers
103 views

Are there any 'minimal' power meter data loggers?

I mean, a device that will just read, persist, and then push the data to a (my) server without having to buy a 3rd party software license. The data being, in this case, electrical generation/...
5
votes
0answers
60 views

What is the working voltage range of a Sonoff Touch?

I would like to replace normal (mechanical) switches at home with Sonoff Touch ones, which I will be able to manage. Today I have this: and by adding the Sonoff Touch I will have that (P1 is the ...
5
votes
0answers
70 views

When using LTE-M's eDRX mode, is the TCP connection still open?

We currently have an IoT device, that connect to our servers using a raw TCP connection over 2G, and from times to times the device send a "keep-alive"-ish message , as we've seen it's consume less ...
10
votes
2answers
63 views

Trigger to remote server when my device in low-battery?

Currently, I working on a project to make a car tracker device. At the moment, the device can work well, but I want to improve it. The situation is that my device is running on a external power (lead-...
2
votes
1answer
287 views

Solar panel + battery power for IoT device with 802.11n [closed]

I've only got basic skills but i am trying to hack together an ESP32 + temperature sensor to send periodic readings out via Wi-Fi. I've managed to get the board to connect to Wi-Fi, read the sensor, ...
8
votes
1answer
114 views

Is wireless mesh a poor choice for sleepy devices?

I've been thinking about what it would take to build a temperature sensor network for the block of apartments I live in. A wireless mesh, if it would work at all, would have some nice features. In ...
7
votes
0answers
282 views

Power Consumption Benchmarks of Different Android Things SoMs?

I'd be grateful if anyone could publish some results of some (even one is good) Android Things compatible SoMs (System On Modules, see here) power consumption benchmark (data for idle, and under load, ...
39
votes
6answers
9k views

What is the simplest programmable IoT device that can connect to Wi-Fi?

I am trying to build a cheap asset tracker that can be powered by a battery pack. All I need the IoT device to do, is to connect to known WiFi network access points. I have access to the backend ...
11
votes
2answers
3k views

Is MQTT protocol appropriate for transmitting sensor readings over BLE?

Assume that there are numerous weak sensors (e.g., Arduino level devices) which rely on BLE as means of communication and that these devices are connected to a more powerful gateway (e.g., Raspberry ...
11
votes
3answers
462 views

Power reduction for Raspberry Pi GPS/GSM tracker

I've recently built a fully functional IoT GPS/GSM tracker with a Pi Zero for a college project and now that it's finished and done with, I would like to minimize the current draw of the entire system ...
31
votes
16answers
7k views

Where can I harvest energy in my home to power my wireless sensors?

I was reading this article, "Five Building Blocks of Self-Powered Wireless Sensor Nodes" (shared on Meta) about energy harvesting in IoT. It lists a couple of harvestable energy sources for example: ...
5
votes
1answer
154 views

Automatic link failure detection methods in ZigBee networks

Given a ZigBee mesh network with several nodes in it. There are established links between each node via router nodes. If Node A wants to send a message to Node Z for the first time then Node A must ...
13
votes
3answers
846 views

What is the power implication of encrypting my sensor traffic?

Considering a typical type of application, a battery powered sensor taking readings (32 bit value) every 10 minutes, what is the likely impact on battery life if I choose a simple un-encrypted on-air ...
6
votes
2answers
179 views

Will reusing a mobile phone as a smart webcam be cheaper than buying a dedicated webcam?

With Perch, it seems that you can use an old Android smartphone with a camera as a webcam, which seems like a great idea to reuse old devices that you no longer want. However, in normal usage, phones ...
19
votes
4answers
12k views

How much power do smart sockets consume themselves?

I see a lot of Wi-Fi sockets or plugs etc, but no one ever mentions how much power they consume themselves. They are typically connected to Wi-Fi constantly, waiting for commands. Does this not take ...
8
votes
2answers
176 views

Do Internet-connected lighting systems save energy overall?

Many manufacturers of 'smart lighting' systems claim that connecting your lights to the Internet of Things will save energy. For example, Samsung SmartThings use energy savings as a key selling point, ...
10
votes
2answers
658 views

Power consumption of ANT/ANT+ compared to other wireless sensor network technologies

ANT/ANT+ is a proprietary but open access multicast wireless sensor network technology. It's data rate and the resulting application throughput of 20 to 60 kBit/s is significantly reduced compared to ...
17
votes
3answers
349 views

What factors to consider when selecting an integrated wifi MCU for a low powered edge device?

The motivation for this question comes from the fact that some time ago I created a simple proof of concept (PoC) IoT edge device using a microcontroller and a CC3100 Wifi network processor. One of ...
10
votes
1answer
251 views

Why does Docker reduce power usage on an Internet of Things device in this benchmark?

I've been interested in the applications of Docker on IoT devices such as Raspberry Pis. After reading A Performance Evaluation of Container Technologies on Internet of Things Devices, I was slightly ...