Software Serial Esp8266 Lua
Robo India presents tutorial how to flash ESP8266 wifi module with LUA firmware. NodeMCU firmware is used here. Introduction:ESP8266 wifi module can be used as a development board with LUA programming. To start with LUA Programming on ESP8266 wifi module, the module should have a firm wire that supports LUA. NodeMCU is an open source firmware for ESP8266 wifi module. This tutorial explains how to upload NodeMCU firmware to ESP8266 wifi module.Before we go ahead you may need to know the setup connections of ESP8266,Connect RX and TX pins of ESP8266 module to the Serial Port of you computer, if you don’t have one in your computer, FTDI or CP2102 can be used.
Required SoftwareTwo software will be required to flash ESP8266 wifi module with NodeMCU.2.1 NodeMCU FirmwareDownload NodeMCU firmware from the below link.You will find two firmware there, one is for integer and other is for float. Download any one of them as per your requirement.2.2 FlasherA software will be required to transfer the firmware we downloaded in above step to the ESP8266 wifi module. This software is known as flasher. Download flasher from the below mentioned link. It has got flasher for Win64 and Win32, download as per your computer’s operating system.3.
FlashingIn order to flash ESP8266 wifi module, your module should be connected to your computer. From device manager of your computer please note down the comport no to which your ESP8266 wifi module is connected. For mine it is COM2.Open Flasher downloaded in above step and select COM Port.Click on configuration tab and enter the full path the firmware you downloaded in step2.
If the path is correct it will be in green color else it will turn red. As shown in the following image.Go to Operation tab of Flasher software and click on Flash(F) button.Press Flash Switch (on ESP8266 Module) and reset the module by pressing reset switch. You should keep on pressing Flash button while pressing and releasing Reset button. (Flash button connects GPIO0 to GND and Reset Button connects RST to GND)By doing this ESP8266 module will enter into flash mode, You may check this by clicking on Log tab of Flasher Software.It is showing Acknowledge successful.After successful acknowledgment it show the status of set base address. In the above image it is showing successful set base address.The module is being flashed with the NodeMCU firmware.
In the operation tab you can see current status of flashing.Once the module gets connected to Flasher software, it starts showing MAC address of the ESP8266 wifi module.On successful completion of flashing green tick mark appear on bottom left corner. The same can be seen from Log tab of Flasher software.After successful flashing Flasher software disconnects itself.The ESP8266 wifi module is now successfully flashed with NodeMCU firmware. You may use it for LUA programming.If you have any query please write us atour whatsapp helpline: +188Thanks and RegardsContent Development TeamRobo India.
“Surprisingly, there are a number of engineers and hobbyists who have not heard of this chip”For hobbyists that IS surprising. For engineers not so much.Engineers who design products for companies to mass produce and sell need to deal with FCC or their country’s equivalent certification. That is an expensive and difficult process. If they are already doing that they probably already have some company selling them chips that they solder directly to their PCBs, and having signed the NDAs they already have the full oficial documentation. They probably aren’t interested in hobbyist modules.No, it doesn’t even matter if the module has already been aproved. Have they even been aproved? Again, it doesn’t really matter.
Stick it in a product that you plan to produce and sell and you have to get it certified again as a whole.RF is a finicky thing and the module could be reacting with your power bus or other components, maybe even metal parts of your case. This could cause it to radiate outside of it’s desired frequency or to focus energy in one direction thus going over legal limits for unlicensed operation in that direction.As a hobbyist the rule is to take reasonable care within your means to ensure that you are neither broadcasting outside your limits or worse. Interfering with someone. As a professional the bar is set a whole lot higher and things are not so easy.
When I was trying to buy a pcie mini card for my laptop (lenovo, sigh; they are infamous for the whitelist they use) I had to flash a hacked bios that removed the whitelist. When you ask lenovo why they don’t let you install your own pcie wifi card, their reply is to the effect ‘we cant guarantee fcc class b’ or some crap like that. Clearly its bullshit.
They are trying to lock you into their own cards. Strangely enough, their card IS a centrino intel card, same as what I bought at my local store. But some ID is different. The card is 100% identical, otherwise.lenovo lies. I won’t be buying lenovo again (for several reasons).
But this whitelist stuff really is so anti-consumer. HP plays the same game, too, btw. Actually, the FCC does permit transfer of a module cert to a device using that module so long as the device adds nothing, not even a cable or new antenna, to the RF path. So it only applies to modules with either a built-in antenna, or precisely the same cable and external antenna as it was certified with as it was certified with (provided as a certified kit by the module vendor).In the EU, full device re-certification is required, module or not.
However, the top-level device cert is simplified (and much faster) if the RF module has already been certified separately. The reasoning, I believe, is the simple fact that many modules are easily misused. So modules are still the way to go in the EU for RF sub-systems that are expected to evolve quickly.
The net effect in the EU is to encourage the use of custom external antennas (since you’re doing a top-level cert anyway). @RobThe same thing that happened before NAT became a thing every home router did; you were responsible for keeping your system safe. Industry used firewalls, so did home PCs. IoT devices that are connecting to APs in the wild should be doing some kind of confirmation of their connection before sending or receiving sensitive data.
How you do that is up to you, but presuming that your AP is safe because of a password and NAT is pretty foolish; if you want data from it from externally, then it has a port open to the internet at large and that port needs to be secured whether it’s IPv4 or IPv6. My internal network, behind a rented (i know, I know) cable modem doing NAT is still IPv4 and IPv6.
Does it make a difference? Not really; it wouldn’t surprise me if the cable modem is doing NAT to IPv6 and assigning the same addresses to everybody with that variety of modem. It does ensure that when I connect out to an IPv6 site, I (should, baring strange NAT on the modem/router combo) be interacting without an IPv6-to-IPv4 pipe.But the more of us who start to switch, and demand that the big providers switch, the better we’ll be. A very helpful write-up. You can now download ready-built toolchains too.For the Linux Arduino IDE – ESP8266 toolchain, there is an example (I haven’t tried this one) at “Programming ESP8266-EVB with Arduino IDE” by Olimex Ltd “the equivalent Windows (64-bit only) toolchain, I downloaded and ran this one on the ESP8266 Community Forum – “This is how to install without replacing your existing IDE” atWorked first time with Arduino IDE 1.6.2. This is indeed a good writeup.I’ve been playing with this neat chip since last fall.
Software Serial Esp8266 Lua 10
At $5 a board, why not! The documentation is still spotty, but the wider community (such as here) have gone along way towards filling the gaps. I have had some success developing custom firmware using a Windows toolchain. Big fun!I’ve also been working with the Spark Core and soon, the Spark Photon – they seem to be the ‘Arduinos’ of wifi-enabled controllers, and Spark has provided a lot of tools and support, so they might be a preferred starting point for those with less experience.
Softwareserial Esp8266 Arduino
It does!I was doing a little research, I tested my esp8266 to draw 70mA on it’s own (can probably save a few mA removing the tiny LED) a pro mini is probably about 50mA, can probably utilize sleep and have an interrupt wake it up when there is a client present on esp8266 (will be running in AP mode).Regarding car battery I’ve found info that it is 44Ah but that’s at 12 so for a 5v load I should deff have enough for my setup.I also thought about adding a switch to the whole setup to only turn it on when it’s cold weather and have the whole system disengaged during the summer months. Cnlohr asked “I don’t really understand what about this would apply to the 8051? ” in response to my post which was responding to Jack.The 8051 is a simple inexpensive processor & the toolstick by silabs is a product that builds on the 8051 generic parts with a lot more IO options such as crossbar.cnlohr went on to ask “I don’t understand why you wouldn’t just make the ESP do whatever the 8051 was doing?” fair question if the task was simple & you had sufficient time.There are a couple of unclear issues using the ESP embedded processor as the wifi does require program overhead thus takes processing away from your inserted application. Overall its far quicker to not mess with any of the internal structures assuming the programmers have well documented the CPU. its s/w interface os etc within the ESP and in any case cannot necessarily warrant or even guarantee a professional process as your application has to work in conjunction with however the ESP operating system is configured. If the documentation were improved then such resistance lessens.Engineers tend to want to avoid those unclear issues as it can also touch on IP too & also if you are already fully conversant with another processor such as 8051, 68HC11 etc then the time to market is far reduced than having to otherwise interface your application into the ESP embedded processor and in any case depends on the size of your data set which may include substantial ascii or html generation overhead.
Software Serial Esp8266 Lua Free
OTOH if the application is simple & not part of a commercial development process that involves any public co capital risk then sure its worth exploring but, when you have investors capital at stake then as a bridge to proof of concept its economically more viable (time & $) to interface to an existing processor & especially so if the already has stock & resident expertise etc:-).