More about the A20 Plus (Pictures of the final product)

Hey

I found more info about the new A20, apparently it was available on taobao but idk why we can’t buy it at the moment, here is the link: https://world.taobao.com/item/537201526509.htm?fromSite=main&spm=a1z10.1-c.w4004-6565671699.4.OdxtAG

Important points:

• Esp8285 for the wifi
• No video mode available(there is an AT command for that)
• 12-15$
• Compatible with OV7670,GC0308,GC0328,GC0309 cameras (0.3M)
• Flash

 

And we have a picture:

 

So there is two information:

It’s surly the biggest Ax board( and maybe there is also an UART ?)

The price: it’s very close to the A6C board for the seller, the AC6 cost 7,49$ and the A20 7,49$ (50Y and 49Y) so it will be surly around 12-13$

They added also two leds surly for the flash, in the A6C AT Commands we can activate it thx to the Camera parameters commands.

 

They also made an android app for use the A20Plus camera, here some pictures:

I found the Application and explanation here: http://pan.baidu.com/s/1o7UleBo#path=%252FGPRS%25E6%25A8%25A1%25E5%259D%2597%25E8%25B5%2584%25E6%2596%2599

You can also go to the online doc here, i found the last pictures here and they explain the code(in chinese): http://www.showdoc.cc/5627?page_id=37300

The first code is: 123456

We can find more info about the code here, but i can’t download his zip because we need to pay for it! : http://www.itdadao.com/articles/c15a342329p0.html

I found the biggest part of these informations on this page:

http://bbs.ai-thinker.com:8008/forum.php?mod=viewthread&tid=2141

Pinout and other pictures of my previous post: https://raymondtunning.wordpress.com/2016/09/08/a20-the-new-gprsgsm-product/

Details of the A6C(like the A20 with no wifi), At commands for control the camera, demo etc: https://raymondtunning.wordpress.com/2016/09/08/best-wireless-cam-solution-a6c/

A20 ? The new Gprs/Gsm product

If you read the infos about A6/A6C/A7 in this pdf: http://wiki.ai-thinker.com/lib/exe/fetch.php/modules/datasheet/a6/ai-thinker_a6_a7_a6c_at_v1.02.pdf you can notice in the title there is also the A20 but i found nothing about this module in internet it’s because they actualy work on it, we can find the information here : http://wiki.ai-thinker.com/lib/exe/fetch.php/modules/datasheet/a6/a6_a6c_a7_datasheet.pdf

So the A20 will combine WIFI/GPRS/GSM/CAMERA, they are the same poeple who made the ESP8266 so maybe they will use this chip for the A20.

There is nothing in the datasheet about the wifi so idk why exacly they added the A20 name, and for the second page they said in chinese “to be updated” and “See full functional test board reference schematics”.

EDIT: I found in a doc here: https://drive.google.com/drive/folders/0B6uNNXJ2z4CxZjZXdy10endmZXM more info about the A20, they will use the 8285 chip for the wifi!

Here is the pin description:

More pictures:

Top

 

Bottom

So maybe thx to this chip it will be easiest to find a solution for program the A20 with the Arduino environment… I hope.

The google Drive link come from here: http://www.dx.com/p/gprs-a7-serial-gprs-gps-module-core-developemnt-board-for-arduino-445823#.V9HzFpiLSUk

Best Wireless Cam solution : A6C ?

 

I’ve discovered the A7, an anwsome solution for have GPS and GPRS in the same chip thx to the great Andreas Spiess youtube channel:

But he he did not talk about the A6C module, maybe because the module was not annonced at this moment, let’s me tell you the avantages of this module:

• Size: If you know the others cam solutions for the arduino and tiny devices, you surly know the ArduCam, and it’s a BIG module because the Arduino can’t be connected directly to the Camera or we need a lot connections so a big module like this one:

  

  OV7670

  The A6C has the same cam(OV7670) but it’s more smaller and we need just 2new connection for the Arduino, RX/TX just for the cam!

• Price: Surly the important point because we can have smaller, better résolution, better gprs etc but much more expensive! I think for exemple to the Raspberry pi Zero and his high definition camera, normaly they cost around 25$ and with a good Gsm/gprs module around 50$. I also wanted to do a wireless camera with a Esp8266, it’s a cheap module but the cameras are really expensive, like this one: http://www.uctronics.com/arducam-2mp-v2-mini-camera-shield-with-esp8266-nano-esp-12f-evaluation-kits.html and i didn’t find a solution above 25$…  But with the high price we have also better résolution, 2M against 0.3M max for the A6C but personaly i don’t know what can happen to a wireless module so i prefer a cheap one which do the basic job. His price is around 12$, with the camera which cost normaly around 3.5$. But the module is likely to cost less in the future because i’ve found only few sellers.

 

I think there is no better deal for a wireless Cam module at this moment, 12$ is a great price and it can be really interesting for the makers community which don’t want to spend more than 15$ for send a picture through a wireless module.

DEMO

 

Camera

AT Commands

AT+CAMSTART         (Start the Cam and choose the resolution)

• AT+CAMSTART=0       (QVGA: 320×240)

• AT+CAMSTART=1         (VGA: 640×480)

• AT+CAMSTART=2        (QQVGA: 160×120)

 

AT+CAMSTOP       (Stop the camera)

AT+CAMCAP         (Take a picture, the default format is .JPG)

AT+CAMRD          (Read the content of the picture)

• AT+CAMRD=fromaddr,toaddr;

 

AT+CAMREC (Not available for the moment)

AT+CAMCFG (Camera configuration)

• AT+CAMCFG=mode,param

This is pure Reverso traduction because i don’t understand what they really say(in chinese):

• 0 indicates that the flash mode, the parameter is 0, Off, 1, 2 Open Automatically
• 1 indicates whether a night market, the parameter is 0, no night vision, 1 open the night vision
• 2 indicates that the image quality, parameters 0,1,2 //7,10,14,20
• 3 indicates that the image is rotated, the parameter is 0, indicating that will not rotate 1 rotate 90 degrees, 2 rotate 180 degree and 3 rotate 270 degree
• 4 The exposure parameters -2,-1,0,1,2
• 5 brightness, parameters -2,-1,0,1,2
• 6 white balance, parameter 0-auto,1-daylight,2- daylight (0x08),3-cloudy(0x09),4- (0x0a) tungsten lamps
• 7 contrast parameters 1-5;

 

Interesting Docs:

Pinout:

a6_a7_a6c_datasheet-en (Page 15 for the A6C)

AT Commands(in chinese)

ai-thinker_a6_a7_a6c_at_v1-02 (Page 171 for the A6C)

 

Few interesting links:

Module in AliExpress:   http://www.aliexpress.com/item/Free-Shipping-Camera-GPRS-module-GSM-module-A6C-text-voice-development-board-the-minimum-system-board/32713287145.html?spm=2114.30010308.3.2.ywlegh&ws_ab_test=searchweb201556_0,searchweb201602_2_10057_10056_10065_10068_10055_10054_10069_10059_10058_10073_10017_10072_10070_10060_10061_10052_10062_10053_10050_10051,searchweb201603_4&btsid=e228f014-6743-4419-9334-4f7f6f0fad21

Doc: http://www.electrodragon.com/w/GSM_GPRS_A6_Module

How to use it: http://www.electrodragon.com/w/File:A6C_Cam_Capture.zip  (You can open with Google Chrome or IE)

Doc from IA-Thinker(there is a part in chinese :/) : http://wiki.ai-thinker.com/lib/exe/fetch.php/modules/datasheet/a6/ai-thinker_a6_a7_a6c_at_v1.02.pdf