Questions tagged [iot]
The iot tag has no usage guidance.
11
questions
-2
votes
1answer
39 views
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 ...
-1
votes
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 ...
1
vote
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 ...
1
vote
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
votes
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 ...
0
votes
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 ...
0
votes
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.(...
1
vote
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)
...
1
vote
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 ...
0
votes
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 ...
1
vote
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 ...
