I recently bought a ESP13 wifi shield which has to mount on to Arduino. I think it is much similar to esp8266 modules, but unable to find a proper guidelines/libraries relevant to it. I did not notice any helpful tutorials also. Here, I want to use this module to run as a wifi server.
An ESP13 is an ESP8266. It is version ESP-13.
It is not a WiFi shield for Arduino; although you can connect it to an Arduino via serial pins and use its WiFi capabilities.
The ESP8266 ESP-13 is a stand alone device. It combines a processor with WiFi so you don't need an Arduino for simple jobs (or not that simple; I use mine to receive REST commands and run 60 addressable LEDs in pretty patterns).
There are lots of resources for ESP8266s:
For example: https://tuts.codingo.me/introduction-to-esp8266-module.
Note that the pin locations change between versions so look out for that when making circuits.
Related
I am working on an embedded project on the STM32F103rb Nucleo-64 board.
The project contains the ESP8266 Wifi Module.
I write the code in the STM32CubeIDE workspace.
Is there a way to connect the ESP8266 Wifi Module to firebase through the STM32CubeIDE work environment?
Or is it not possible?
Many thanks in advance!
Update
The highlight text provide clarification as per # Oz Edri's comment.
Based on your comments. There are two ways to achieve what you want.
To have the ESP8266 with AT Command firmware, and the STM32 communicate with ESP8266 via AT commands to establish an SSL connection over TCP with firebase server. In this case, the ESP8266 just acts as a WiFi module.
To have the ESP8266 acts as an Arduino, and you design and write your interface protocol and commands between STM32 and ESP8266 (via SPI, I2C or UART). In this case, ESP8266 handle most of the communication while STM32 interfacing with sensors, etc.
I've done both ways in my projects, I have a blog post which might give you some more details on how to implement it.
I was troubleshooting why Serial1 was always throwing undefined errors in sketches I was trying to run when I found a solution posted online for a slightly different board that suggested this line:
HardwareSerial Serial1(2);
I uploaded it and now the Arduino doesn't show up in the IDE, did I remap it's serial communications? Why is this possible!
Is there any hardware factory reset option available on these boards? Did I just brick my device?
edit: It seems the STM32Cube programmer app can be used to communicate with the device but I'm not sure where to get the original firmware to flash. https://imgur.com/a/LbiHenf
Assuming from the tag in your question, I guess you have an STM32 – (BluePill) Development Board (STM32F103C8).
If you think that your board is not handling serial communication properly then you might consider burning bootloader to your board. This will reset the complete configuration of your board.
There are many ways in which you can burn bootloader to your board.
Using another Arduino board like Uno / Nano / Mega
Using an FTDI USB to TTL Serial Adapter.
You might want to go through tutorials list below:
Getting Started with STM32 using Arduino IDE: Blinking LED
Programming STM32F103C8 Board using USB Port
I am new to Arduino and I would like to do a project that sends data, remotely. So, the Arduino would not be connected to Wifi/Bluetooth, Ethernet, etc. Would using a GSM shield be the best way to transfer data? I do not need to make phone calls or send SMS (unless sending SMS would be a better, more reliable, option) just data to a server, who's app I would create. If this is the best option, what else would I need to make this happen? For example, on top of the GSM shield (I am looking at something cheap like this: https://www.amazon.com/Geeetech-SIMCOM-Quad-band-Development-Arduino/dp/B00A8DDYB6/ref=sr_1_2?ie=UTF8&qid=1467651878&sr=8-2&keywords=Arduino+GSM+Shield) what other charges would I need to pay? I.E. would I also need to get another phone plan? Would I have to pay for a gateway service that would receive the cell phone data and then send it to my server?
Thanks your any thoughts on this
Wifi, ethernet or GSM, it depends on what you want to use, and what you have.
With all three you can send data to a server.
There is a bench of Arduino shields. All shields from Arduino come with a library to handle communication.
Other shields from other vendors exist and they provide their libraries too.
For Ethernet you can check the arduino shield https://www.arduino.cc/en/Main/ArduinoBoardEthernet.
For Wifi there are plenty. You have first the arduino shield. You can also take a look at the CC3000. Or the famous ESP8266. For all three you can find libraries.
For GSM, Arduino has a shield and a library. Arduino uses the Quectel M10 GSM moduel. You can find lots of examples in the arduino website and all over the net (https://www.arduino.cc/en/Guide/ArduinoGSMShield).
There exist other shields like the one you mentioned. Libraries does exist for those "other" shields however they are not as maintained as the arduino one.
You need to be careful though, you'll find over Amazon (and most likely on Alibaba) some GSM modules like SIM900A that are way cheaper, those are only dual band and will work only on certain contries.
There is another cheap GSM Module called the A6. It was made by espressif the company behid the ESP8266. It's relatively new and no library exist for it at the time. You can write you own functions to use it, but that would be some extra work.
In all cases, to use a GSM module you'll need a sim card with it's phone plan and all.
Another thing to consider is how to power these shields. They use more power than an Arduino can generate (A GSM modules datasheet recommend to use a power supply that can deliver up to 2A). If you power them straight from the Arduino, you may encounter some strange behaviour.
So the ideal way is to have for them an external power supply with the required amps and have a commun ground with the Arduino.
I am new to arduino and just picked up myself an UNO and an ESP8266 module. I've managed to wire them all up properly and connected to my home network using the AT commands.
But now im trying to follow tutorials on the internet but the problem is every example includes a library
#include <ESP8266WiFi.h>
such as this example tutorial https://learn.sparkfun.com/tutorials/esp8266-thing-hookup-guide/example-sketch-ap-web-server
So I have tried googling for it but can't find anything. I'm assuming thats because its really simple and Im missing something quite obvious.
help?
If you wish to use the Arduino as the main part of your ESP8266 project, there are several ways to go.
Use the Arduino to issue AT commands to the ESP8266.
Create your own protocol or messaging system by programming up the
ESP8266 with (for example) nodemcu or the Arduino/ESP8266 project or
Espressif or others, then program up your Arduino with the same
protocol or messaging system so the two may talk.
Alternatively, just program your ESP8266 directly. No Arduino required. Doing so, you can turn the tables and get the ESP8266 to issue messages to the Arduino if for example if you wanted the many GPIO and sense pins of the Arduino to do something. If you only need a couple of extra GPIO pins, look at the ESP8266 range to get more GPIO pins, such as the ESP8266-12
Which to choose?
nodemcu will give you a good idea of the capabilities of the ESP8266
and may be a good starter, easy to flash, easy to program, but it is a poor finisher except for the most basic of programs.
espressif has a large toolchain, not pleasant to flash,
you'll be at the cutting edge, however the community support is
minimal
The Arduino/ESP8266 project is awesome, easy to flash, very fast,
very stable, and unlike nodemcu you can create a large project. As you noticed, any arduino project starting with #include <ESP8266WiFi.h> is not for the arduino, but for the ESP8266 using the arduino IDE https://github.com/esp8266/Arduino
The Sparkfun example, it's for the ESP8266 Thing and it's using the Arduino ESP8266 Core, to flash the module.
It's not Arduino code that communicates with the module over serial. You need to upload this code to ESP module and with the Arduino ESP8266 Core, it's possible to program the ESP directly from the Arduino IDE.
I have the Arduino UNO board and I want to know if it is possible to use both the USB connection (for exchanging data) and the external jack to power supply it.
I will use the following cable: http://ecx.images-amazon.com/images/I/41OMXaj5cPL.SY355.jpg with a AC-DC 5V adaptor in order to power supply the Arduino. However, I want to use also the USB connection in order to send some data from the computer.
Both will be connected at the same time.
In short, I want the Arduino to be able to run even if the computer is OFF and whenever I open the computer to send data to Arduino from USB connection.
Is this possible? Will the Arduino Uno board support it?
Yes. From the official Arduino website:
Power
The Arduino Uno can be powered via the USB connection or with an external power supply. The power source is selected automatically.
External DC power will override USB power if the Arduino detects it. [Source]
as other said, it is absolutely possible to have both usb and power jack plugged in.
but be aware that if you shut down your computer and turn it on after, when reading the usb port you'll restart the Arduino and might loose important data.
yeah both of them can be used. If you want to upload the code in arduino then simply use the usb cable otherwise keep it on adapter. it wont harm the device.
What I personally do is, I keep on plugging the adapter and remove the usb once I am done with uploading and then test it as normally the usb cable is quite small and I normally work on robots so I need long wires.
if you want just plugs it in, it's ok but Arduino board will chose one and usb has priority to other power source.
********* Very important :*****
if you are controlling other circuits, that are connected to an external power supply, with your Arduino and connecting it to your PC's usb, Arduino will have potential difference and it will cause current flow that will damage your PC and Arduino board. if you want to do such thing, you have to shield your Arduino board from your other circuits that you want to control and they have external power source. this could happen with optocouplers for digital ports, non signal analog ports with shield relays, and complex analog circuits for analog signals