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Forum Index : Microcontroller and PC projects : 4 $ WiFi Serial Transceiver Module
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atmega8 Guru  Joined: 19/11/2013 Location: GermanyPosts: 724 |
WOW !!!!! This opens a new world of communication also for Micromite and other Conrollers. •Integrated RF switch, balun, 24dBm PA, DCXO, and PMU •Integrated RISC processor, on-chip memory and external memory interfaces •Integrated MAC/baseband processors •Quality of Service management •I2S interface for high fidelity audio applications •On-chip low-dropout linear regulators for all internal supplies •Proprietary spurious-free clock generation architecture •Integrated WEP, TKIP, AES, and WAPI engines http://espressif.com/en/products/esp8266/ http://olimex.wordpress.com/2014/09/08/esp8266-wifi-chips-an d-modules-arrived/ |
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MicroBlocks Guru Joined: 12/05/2012 Location: ThailandPosts: 2209 |
Got one of those, not get it to work yet..... Here are some more links: http://hackaday.io/project/2879-ESP8266-WiFi-Module-Library http://www.esp8266.com/viewtopic.php?f=8&t=6 http://www.mikrocontroller.net/topic/342240 Can be controlled through serial, SPI and SDIO. Microblocks. Build with logic. |
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| atmega8 Guru Joined: 19/11/2013 Location: GermanyPosts: 724 |
exactly the modules i talked about. trivial to get them up and running. Where is your Problem ? |
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| MicroBlocks Guru Joined: 12/05/2012 Location: ThailandPosts: 2209 |
I tried the example that is on esp8266.com but it does not see my wifi router. I think i need to give it its own power supply, the power ont he arduino uno i tried it on might not give enough. Do you have some working code? Microblocks. Build with logic. |
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| atmega8 Guru Joined: 19/11/2013 Location: GermanyPosts: 724 |
My "Working Code" is that the AT Commandos are working like a charme and that is what i need, enough for home automation ! Be carefull, they only accept 3,3 Volt, 5 Volt will kill them... |
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| atmega8 Guru Joined: 19/11/2013 Location: GermanyPosts: 724 |
When they are "unconfigured" the modules consume nearly 200mA. When you configure them, the current will sink to 40-60mA... |
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| WhiteWizzard Guru Joined: 05/04/2013 Location: United KingdomPosts: 2944 |
These are $4 units so expect well above average current draw (typical syndrome from cheap 'fakes' as my 'followers' will know!). As has been said many times before - these are great for personal use; but don't expect consistent reliability, or performance matching the 'official' datasheet, or any guarantee for when it fails. 
These cheap units are great for proof-of-concept; and also for personal use and that about all. So grab a bargain, and be prepared to waste time getting it working in the same way as then next person! Warning over . . . . . |
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| atmega8 Guru Joined: 19/11/2013 Location: GermanyPosts: 724 |
the chip ESP8266 seems to be not older then 1-2 months. Maybe you are wrong ?! |
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| WhiteWizzard Guru Joined: 05/04/2013 Location: United KingdomPosts: 2944 |
This says it all . . . . [quote]Everyone (including the great [Sprite_TM]) has currently hit a roadblock . . . we’ll have to wait until someone from Tensilica, the company behind the guts of this chip, to chime in and help everyone figure out how this thing actually works.[/quote] New does not automatically mean 'good'. I am all for creativity but also think that quality is important. Lets see how it goes . . . . . edit: As always, I am prepared to be proven wrong 
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Grogster Admin Group  Joined: 31/12/2012 Location: New ZealandPosts: 9610 |
Cheapest is not necessarily the best. 
Still - impressive little modules for the price, but if you have to fight them to make them work, you would probably lose less hair with a more expensive module. Just about everyone has their own opinion on RF data modules, so I will just offer my own 2c here: I use the Radiometrix range of modules. These are NOT known for being cheap(actually they are quite expensive), but they are very well documented, compliance tested and supported. I have used a couple of hundred Radiometrix transmitter modules over the years, and have not had a single failure in any of them yet. I do distinctly remember bench testing some of those cheap-as-chips RF modules years ago, and gave up, cos I could not make the bloody things work right. In the end, I bought a couple of the Radiometrix modules - just to test, knowing full well they were about ten times the price of the cheap ones, but guess what? They worked from the very first bench test, exactly as expected, no hair loss for me, and they then became the product's transmitter. Something else to consider - regulations. The Radiometrix stuff(along with many other quality modules, by the way), have full type-approval - they have been tested in a lab for harmonics and spurious emissions, correct power output levels etc. Cheap modules will not be tested like that, and could possibly be emitting all over the band when they are enabled - you would never know unless you were to put one on a spectrum analyser. I have to side with WW here. Cheap modules are OK for hobby use and tinkering around(assuming you can get them to co-operate!), but as he says - don't use in a product.  Smoke makes things work. When the smoke gets out, it stops! |
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| plasma Guru Joined: 08/04/2012 Location: GermanyPosts: 437 |
I ordered 4 cheap modules from ebay . I need to build a network with . If i got it to work i'll show my success here. Btw.: i have 2 wifly network module also But booth have a buffer oberflow if i send Much datas on maximal speed. Also the ping times (ad hoc modus, with only 2 devices) Are horrible floating from 5 ms up to 120. And the wifly modules Is really expensive. After Microchip gets Roving Network there are no software updates anymoore. So i try my luck with the cheapy chinese boards. |
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| atmega8 Guru Joined: 19/11/2013 Location: GermanyPosts: 724 |
http://youtu.be/WFo4Fs0p_NY http://youtu.be/WFo4Fs0p_NY |
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| viscomjim Guru Joined: 08/01/2014 Location: United StatesPosts: 925 |
Ran across this article. Seems doable. I'm going to research a bit more. Serial to WiFi |
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| plasma Guru Joined: 08/04/2012 Location: GermanyPosts: 437 |
i have 2 of thes Hilink module from above , booth working |
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Oldbitcollector Senior Member  Joined: 16/05/2014 Location: United StatesPosts: 172 |
So I started playing with one of these tonight connected to my MMC board. This power hungry little sucker made my 5v regulator start to sweat a bit, bit it held in there for the hour I was playing with it. :) I'm using a little terminal program we wrote a few weeks ago for the Micromite; [code] Open "Com1:115200" As #1 'Connected the unit to Micromite Com1 terminal: a$="" b$="" a$=Inkey$ If a$ <> "" then Print #1,a$; If Loc(#1) >=1 then b$=Input$(1,#1) char=asc(b$) If char > 31 then Print b$; If char = 13 then Print " " Goto Terminal [/code] Here's a little "cheat-sheet" that may help you with the commands. I was able to connect the unit to my wireless network, turn on the server, and then establish a telnet connection between my linux box and the terminal. [code] AT+RST Reset AT+CWMODE=3 Set as Client and Access Point AT+LAP List Access Points AT+JAP="ssid","password" Join Access Point AT+CIFSR Display Current Assigned IP Address (Unit it PINGable at this point) AT+CIPMUX=1 Set Single Connection AT+CIPSERVER=1,{port} Open Socket Server (A telnet connection can be opened at the specified port) AT+CIPSEND=0,{number of bytes} > Send number of bytes [/code] There will probably be a few of us playing with these using the Micromite, so bookmark this thread as well. http://propellerpowered.com/forum/index.php?topic=688.0 Jeff My Propeller/Micromite mini-computer project. |
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| viscomjim Guru Joined: 08/01/2014 Location: United StatesPosts: 925 |
Hi OBT, Thanks for a quick start on this. I will be following your propeller thread to see what you guys accomplish with this unit. Would be great to get the uMite "online" and maybe able to control things over the internet. Looking forward to progress. |
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| Oldbitcollector Senior Member Joined: 16/05/2014 Location: United StatesPosts: 172 |
Just got a simple webserver running on my Micromite. :) http://propellerpowered.com/forum/index.php?topic=688.msg463 3#new My Propeller/Micromite mini-computer project. |
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| viscomjim Guru Joined: 08/01/2014 Location: United StatesPosts: 925 |
Hi OBC, just checked out your thread on propellerpowered. This is very exciting. I can see this opening a lot of doors toward some IoT stuff using uMite. GREAT WORK!!!! Thanks! |
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TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 6283 |
I have some of the modules on the slow boat from China so you have saved me a lot of reading. I have been dismayed at the power requirements of any Ethernet or wireless module I have used. It makes low power devices difficult to make. At the moment I an using Raspberry Pi's for my serial to Ethernet devices and that way most of the static web pages can be easily catered for with the Pi, leaving the uMite for the useful bits. Jim VK7JH MMedit |
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| JohnS Guru Joined: 18/11/2011 Location: United KingdomPosts: 4044 |
The RPi has scary power needs! John |
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