quick guide to securing the thing / recover password

A project log for DBPOWER ELM327 Wi-Fi Interface (OBD II) "review"

just out of interest I bought one of these to play with

rawerawe 08/28/2014 at 18:298 Comments
 cmd> setet 4 
 cmd> setwp ***************** 
 cmd> setssid Bordnetz 
 cmd> wificonfig 
 SSID  : Bordnetz 
 Network Type: AP(2) 
 Encrypt Type: WPA2-AES(4) 
 PassPhrase  : ***************** 
 Ap's channel: 1 
 Dhcp Client : enable 
 cmd> saveconfig 
 Saving Configuration to FLASH 
 cmd> reboot 
 device will reboot... 

and *tadaa*

Cell 06 - Address: 00:0E:C6:00:3B:1B
   Frequency:2.412 GHz (Channel 1)
   Quality=48/70  Signal level=-62 dBm  
   Encryption key:on
   Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
   18 Mb/s; 36 Mb/s; 54 Mb/s
   Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
   Extra: Last beacon: 344ms ago
   IE: IEEE 802.11i/WPA2 Version 1
   Group Cipher : CCMP
   Pairwise Ciphers (1) : CCMP
   Authentication Suites (1) : PSK


Serega wrote 11/18/2018 at 13:28 point

how reset  login  user password on 

for OBD host:  ?

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insename2 wrote 03/20/2017 at 04:11 point

Thanks for all the discovery and hacking. I am reading the instructions on how to secure the wifi and for the life of me I can't figure out what you mean by cutting the 5v trace. It looks like the CP2012 already has a 3.3V power out? Do I have to use a jumper and sever a trace to get 3.3 out of this board?

Also, my wifi module says Nufront on it but looks almost identical. Is it based on the same AXIX chipset? 

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Alexandru wrote 01/12/2016 at 06:59 point

is it possible to make the elm scan for an wifi network, if found connect (credentials saved in code), if not switch to ap mode

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rawe wrote 01/13/2016 at 14:21 point

For this, you may want to replace the integrated wifi module with an ESP8266 and script this via LUA.

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opelfahrer79 wrote 02/15/2015 at 12:59 point

Hey. Can you please provide an exact pin connection for accessing the wifi module with an Uart converter?

Given this one:

is it in order 2,3,4,5 for GND,TX,RX,POWER?

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rawe wrote 02/16/2015 at 11:52 point

You are right. See for a pinout. 

2 GND. 3 TX. 4 RX. 5 3.3V (not 5!). 38400 baud.

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rawe wrote 02/17/2015 at 16:33 point

this board provides 3.3V singal levels but no 3.3V supply voltage. you could use something like LD1117V33 (from Conrad) plus two decoupling caps (100nF / 1uF), or a cp2012 based adapter (cp2012 contains 5V to 3.3V regulator, adapter boards are 1-3 eur at ebay, incl. shipping). 

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