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How can I use internet on my phone with GPRS when my sim is actually GSM and the two are different technologies.
Your SIM card have nothing to do with technology used for data transfer.
SIM only contains identification of subscriber (Subscriber identity module) and maybe some auth/encryption process (A3/A5), thus it's on modem, if is capable with GPRS/EDGE/HSDPA (and of course operator's network)
Only thing to note is the "phase" of your SIM card.
However, it's only information, with which extension is your SIM capable.
You can read ETSI TS 131 102 or ETSI TS 121 111 documents for some details, there are available on http://www.etsi.org
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i am working on a project and i don't really now how to handle this one.
So i have raspberry pi with nrf905 connected to it. It's purpose is to send data via radio.
Also there is arduino M0 board that serves as a reciver with it's own build in radio module. It should also print recived data in serial monitor. Any tips on how to start? Frequency must be 433.0 MHz, bandwith 125kHz.
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I would like to use a BLE temperature sensor (such as the Inkbird IBS-TH1 Mini BLE Sensor), however, I want to be able to display the temperature measurements in my own website. To do this I am planning to have an ESP32, which would intercept the temperatures sensor's BLE messages (and then send them to Firebase Realtime Database via WiFi). I know how to use the ESP32 to find advertising devices, however, I am not sure how to receive the measurements the sensor is transmitting. I have seen libraries such as the ESPHome or ESP32-mqtt-room, but I was wondering whether there is a way to bypass them? Is it neccesary to use mqtt or mosquito? Or is it possible to achieve this using solely the Arduino BLE library?
Any help would be appreciated!
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I am supposed to work on project which involves communication between 2 GSM 900A modems. The main idea is to acquire data in remote location through Arduino (Arduino Mega in my case) and transmitting the data to the Server which will be my laptop, in which that communication part i use 2 GSM 900A modems. I am new to GSM modems so could you please help me with your ideas for establishing communication between 2 modems..
I posted a blog on this topic which is given below. I think it may be helpful for you. link:http://www.jellyfishtechnologies.com/category/embedded/
GSM modems do not follow a common standard, although the command set does tend to be a superset of Hayes AT. You will need to refer to documentation and development kits for your particular devices.
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This shows a network of 3 workstations and a router. below is the routing table of PC 1
If PC1 sends a packet to PC 2. How would it get to the destination?
As I have understood PC1 would refer its routing table, and broadcast the packet.For that which entry in the routing table would it make use of?
It's the third entry in your routing table: 172.16.18.0/24 is routed through 172.16.18.1 which is local network interface. Thus the OS knows that packets to this network should be delivered through this interface.
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I am not familiar with ZigBee technology. And I am bit confused. Does Zigbee need a transmitter and receiver? How is its networking flow?
I was thinking of the notifications that our system have would be send to an application in a PC via ZigBee. That is, drop rate changes of dextrose shows in an application / interface.
ZigBee is built on top of the 802.15.4 standard. It's a bi-directional protocol... so to participate in a ZigBee network (or any 802.15.4 network) you need a transceiver (transmitter+receiver). There are lots of products on the market, but I'd suggest you take a look at the Digi XBee modules. A lot of the complexity of implementing ZigBee is built into the modules so that you don't have to worry about it.
The book "Building Wireless Sensor Networks" by O'Reilly is a good start if you go the XBee route.