Questions tagged [iot]

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Are SX1276 DIOx pins necessary?

This is about a SX1276 Semtech chip dev custom board: For this project, is there anything missed when not connecting any of the DIOx pins to my microcontroller? I meant, in my project I have no pins ...
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0answers
24 views

How large is difference in range between LoRa devices on different frequencies?

I recently bought Lilygo T-Beam device with frequency 923Mhz for my country. I wonder if there is some big difference in usable range (in km) between low and high ...
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1answer
62 views

SIM7020 current consumption way too high

For a project I'm using the SIM7020 Narrowband-IoT (NB-IoT) module to send data to the cloud. The SIM7020 is controlled by an Arduino Pro Micro (ATmega32U4). Because the sensor is running on a ...
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1answer
38 views

STM32 Low power series microcontroller or STM32WL series with integrated LoRA? (IoT Device)

I'm starting a design of IoT device. Trouble that I have is deciding which setup to use. I would like to someone with more experience can point me to right direction. With everything that is happening ...
0
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1answer
35 views

Providing power to NodeMCU (ESP 8266) from 5V output of an Arduino

Is it possible to power a NodeMCU from 5V output of an Arduino UNO board? I was trying to use the Vin of the NodeMCU as the input from the 5V port of the Arduino. It didn't work. Could anybody please ...
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0answers
34 views

How to upload new firmware to Ralink RT5350F board

I took apart old Edimax SmartPlug (model SP-1101W) to find out that the brain of the device is Ralink RT5350F chip conviniently placed on removable module board: The board has two rows of 14 pins (28 ...
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1answer
38 views

How long can I power up a nodeMCU

I have a nodeMCU esp8266 and I'm going to power up the nodeMCU as long as possible but I need to know is it good to the health of nodeMCU. In other way I am going to power the nodeMCU forever.(...
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1answer
104 views

Why are ultra low power microcontrollers 32-bit?

I am learning about ultra low power (ULP) microcontrollers and I've listed some criteria: Current consumption with only RAM retention (~70nA) Current consumption with RAM retention + RTC (~150nA) ...
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2answers
65 views

SCADA communication protocol

I am a software engineer by trait and have very little knowledge of communication protocols inside surrounding PLC's. Not even sure I have a PLC at this point. I have bought a battery, a quiet big ...
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0answers
35 views

TPL5110 autoshutoff

I am planning to use TPL5110 (Adafruit breakout) with a LoRa-based soil sensor, to make it energy efficient for battery use. I want to turn on the sensor box after every hour to send data and shutoff ...
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0answers
83 views

What happened to the M2.com standard?

I just discovered some news articles from 2016 announcing an IoT standard called "M2.com", with quite a few big names supporting it. It was basically meant to be a standard pinout for the M2 ...