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Old 05-29-2011, 10:37 AM   #31 (permalink)
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How can I interface this thing with the Arduino board?
$25.90 - ELM327 USB Vehicle OBD-2 Scanner Tool - OBD/OBD2 Car Diag. Tools

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Old 05-30-2011, 09:18 AM   #32 (permalink)
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This device being USB, I doubt you can. You would have to open it and check if they use a PIC with integrated USB (which is certainly the case), in this case you can not.
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Old 06-04-2011, 06:35 AM   #33 (permalink)
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http://opengauge.googlecode.com/svn/...obduino32K.pde

I'm trying to use this code for use with a serial cable - while compiling I'm getting errors. I'm using Arduino 22. I'vce little knowledge with programming, so please help me out
Quote:
sketch_jun04a:363: error: 'byte' does not name a type
sketch_jun04a:364: error: 'byte' does not name a type
sketch_jun04a:365: error: 'byte' has not been declared
sketch_jun04a:368: error: 'byte' has not been declared
sketch_jun04a:397: error: 'byte' does not name a type
sketch_jun04a:405: error: 'byte' does not name a type
sketch_jun04a:413: error: 'byte' does not name a type
sketch_jun04a:723: error: 'byte' does not name a type
sketch_jun04a:788: error: 'byte' does not name a type
sketch_jun04a:796: error: 'byte' does not name a type
sketch_jun04a:797: error: 'byte' does not name a type
sketch_jun04a:798: error: 'boolean' does not name a type
sketch_jun04a:799: error: 'byte' does not name a type
sketch_jun04a:800: error: 'byte' does not name a type
sketch_jun04a:801: error: 'byte' does not name a type
sketch_jun04a:802: error: 'byte' does not name a type
sketch_jun04a:805: error: 'byte' does not name a type
sketch_jun04a:806: error: 'byte' does not name a type
sketch_jun04a:810: error: 'byte' does not name a type
sketch_jun04a:811: error: 'byte' does not name a type
sketch_jun04a:868: error: too many initializers for 'screen_t'
sketch_jun04a:868: error: too many initializers for 'screen_t'
sketch_jun04a:868: error: too many initializers for 'screen_t'
sketch_jun04a:868: error: too many initializers for 'params_t'
sketch_jun04a:904: error: 'byte' does not name a type
sketch_jun04a:919: error: 'byte' does not name a type
sketch_jun04a:928: error: 'byte' does not name a type
sketch_jun04a:932: error: 'byte' does not name a type
sketch_jun04a:935: error: 'byte' does not name a type
sketch_jun04a:936: error: 'byte' does not name a type
sketch_jun04a:983: error: 'boolean' does not name a type
sketch_jun04a:992: error: 'byte' does not name a type
sketch_jun04a:993: error: 'boolean' does not name a type
sketch_jun04a:1014: error: expected constructor, destructor, or type conversion before '(' token
sketch_jun04a.cpp: In function 'void serial_rx_on()':
sketch_jun04a:1149: error: 'Serial' was not declared in this scope
sketch_jun04a.cpp: In function 'void serial_tx_off()':
sketch_jun04a:1160: error: 'delay' was not declared in this scope
sketch_jun04a.cpp: At global scope:
sketch_jun04a:1171: error: 'boolean' does not name a type
sketch_jun04a:1196: error: variable or field 'iso_write_byte' declared void
sketch_jun04a:1196: error: 'byte' was not declared in this scope
sketch_jun04a:1205: error: 'byte' does not name a type
sketch_jun04a:1214: error: variable or field 'iso_write_data' declared void
sketch_jun04a:1214: error: 'byte' was not declared in this scope
sketch_jun04a:1214: error: 'data' was not declared in this scope
sketch_jun04a:1214: error: 'byte' was not declared in this scope
sketch_jun04a:1252: error: 'byte' does not name a type
sketch_jun04a.cpp: In function 'void iso_init()':
sketch_jun04a:1290: error: 'millis' was not declared in this scope
sketch_jun04a:1298: error: 'byte' was not declared in this scope
sketch_jun04a:1298: error: expected `;' before 'ISOSteps'
sketch_jun04a:1309: error: 'ISO_InitStep' was not declared in this scope
sketch_jun04a:1312: error: 'ECUconnection' was not declared in this scope
sketch_jun04a:1323: error: 'digitalWrite' was not declared in this scope
sketch_jun04a:1327: error: 'ISOSteps' was not declared in this scope
sketch_jun04a:1337: error: expected `;' before 'b'
sketch_jun04a:1339: error: 'Serial' was not declared in this scope
sketch_jun04a:1343: error: expected `;' before 'i'
sketch_jun04a:1343: error: 'i' was not declared in this scope
sketch_jun04a:1344: error: 'b' was not declared in this scope
sketch_jun04a:1344: error: 'iso_read_byte' was not declared in this scope
sketch_jun04a:1347: error: 'b' was not declared in this scope
sketch_jun04a:1359: error: expected `;' before 'b'
sketch_jun04a:1362: error: 'b' was not declared in this scope
sketch_jun04a:1362: error: 'iso_read_byte' was not declared in this scope
sketch_jun04a:1376: error: 'delay' was not declared in this scope
sketch_jun04a:1379: error: 'iso_write_byte' was not declared in this scope
sketch_jun04a:1386: error: expected `;' before 'i'
sketch_jun04a:1386: error: 'i' was not declared in this scope
sketch_jun04a:1400: error: 'ECUconnection' was not declared in this scope
sketch_jun04a.cpp: At global scope:
sketch_jun04a:1622: error: 'byte' does not name a type
sketch_jun04a:1629: error: 'boolean' does not name a type
sketch_jun04a:1662: error: 'boolean' does not name a type
sketch_jun04a:2033: error: 'byte' has not been declared
sketch_jun04a.cpp: In function 'void long_to_dec_str(long int, char*, int)':
sketch_jun04a:2035: error: 'byte' was not declared in this scope
sketch_jun04a:2035: error: expected `;' before 'pos'
sketch_jun04a:2040: error: 'pos' was not declared in this scope
sketch_jun04a:2042: error: expected `;' before 'i'
sketch_jun04a:2042: error: 'i' was not declared in this scope
sketch_jun04a:2049: error: 'struct params_t' has no member named 'use_metric'
sketch_jun04a:2049: error: 'struct params_t' has no member named 'use_comma'
sketch_jun04a.cpp: At global scope:
sketch_jun04a:2164: error: 'byte' does not name a type
sketch_jun04a.cpp: In function 'void clear_icons_tvss()':
sketch_jun04a:2168: error: 'byte' was not declared in this scope
sketch_jun04a:2168: error: expected `;' before 'i'
sketch_jun04a:2168: error: 'i' was not declared in this scope
sketch_jun04a:2169: error: 'tvss' was not declared in this scope
sketch_jun04a.cpp: In function 'void clear_icons_tmaf()':
sketch_jun04a:2173: error: 'byte' was not declared in this scope
sketch_jun04a:2173: error: expected `;' before 'i'
sketch_jun04a:2173: error: 'i' was not declared in this scope
sketch_jun04a.cpp: In function 'unsigned int get_icons(char*)':
sketch_jun04a:2181: error: 'byte' was not declared in this scope
sketch_jun04a:2181: error: expected `;' before 'nb_entry'
sketch_jun04a:2184: error: 'struct params_t' has no member named 'per_hour_speed'
sketch_jun04a:2187: error: 'struct params_t' has no member named 'use_metric'
sketch_jun04a:2197: error: expected `;' before 'i'
sketch_jun04a:2197: error: 'i' was not declared in this scope
sketch_jun04a:2199: error: 'tvss' was not declared in this scope
sketch_jun04a:2202: error: 'nb_entry' was not declared in this scope
sketch_jun04a:2205: error: 'nb_entry' was not declared in this scope
sketch_jun04a:2207: error: 'struct params_t' has no member named 'fuel_adjust'
sketch_jun04a:2223: error: 'boolean' was not declared in this scope
sketch_jun04a:2223: error: expected `;' before 'lowSpeed'
sketch_jun04a:2227: error: 'lowSpeed' was not declared in this scope
sketch_jun04a:2230: error: 'struct params_t' has no member named 'speed_adjust'
sketch_jun04a:2243: error: 'struct params_t' has no member named 'use_metric'
sketch_jun04a:2245: error: 'lowSpeed' was not declared in this scope
sketch_jun04a:2271: error: 'struct params_t' has no member named 'use_metric'
sketch_jun04a:2274: error: 'struct params_t' has no member named 'use_metric'
sketch_jun04a:2274: error: 'lowSpeed' was not declared in this scope
sketch_jun04a.cpp: At global scope:
sketch_jun04a:2291: error: 'byte' has not been declared
sketch_jun04a.cpp: In function 'unsigned int get_cons(char*, int)':
sketch_jun04a:2307: error: 'struct params_t' has no member named 'use_metric'
sketch_jun04a:2328: error: 'struct params_t' has no member named 'use_metric'
sketch_jun04a:2357: error: 'struct params_t' has no member named 'use_metric'
sketch_jun04a:2367: error: 'struct params_t' has no member named 'use_metric'
sketch_jun04a.cpp: At global scope:
sketch_jun04a:2384: error: 'byte' has not been declared
sketch_jun04a.cpp: In function 'void get_fuel(char*, int)':
sketch_jun04a:2394: error: 'struct params_t' has no member named 'use_metric'
sketch_jun04a:2407: error: 'struct params_t' has no member named 'use_metric'
sketch_jun04a.cpp: At global scope:
sketch_jun04a:2422: error: 'byte' has not been declared
sketch_jun04a.cpp: In function 'void get_waste(char*, int)':
sketch_jun04a:2432: error: 'struct params_t' has no member named 'use_metric'
sketch_jun04a:2445: error: 'struct params_t' has no member named 'use_metric'
sketch_jun04a.cpp: At global scope:
sketch_jun04a:2460: error: 'byte' has not been declared
sketch_jun04a.cpp: In function 'void get_dist(char*, int)':
sketch_jun04a:2470: error: 'struct params_t' has no member named 'use_metric'
sketch_jun04a:2483: error: 'struct params_t' has no member named 'use_metric'
sketch_jun04a.cpp: In function 'void get_remain_dist(char*)':
sketch_jun04a:2518: error: 'struct params_t' has no member named 'use_metric'
sketch_jun04a:2531: error: 'struct params_t' has no member named 'use_metric'
sketch_jun04a.cpp: At global scope:
sketch_jun04a:2544: error: 'byte' has not been declared
sketch_jun04a.cpp: In function 'void get_max_vss(char*, int)':
sketch_jun04a:2549: error: 'struct params_t' has no member named 'use_metric'
sketch_jun04a:2561: error: 'struct params_t' has no member named 'use_metric'
sketch_jun04a.cpp: In function 'void accu_trip()':
sketch_jun04a:2578: error: 'byte' does not name a type
sketch_jun04a:2579: error: 'byte' does not name a type
sketch_jun04a:2580: error: 'byte' was not declared in this scope
sketch_jun04a:2580: error: expected `;' before 'throttle_pos'
sketch_jun04a:2581: error: expected `;' before 'open_load'
sketch_jun04a:2588: error: 'PIDCacheCount' was not declared in this scope
sketch_jun04a:2595: error: 'millis' was not declared in this scope
sketch_jun04a:2603: error: 'get_pid' was not declared in this scope
sketch_jun04a:2612: error: expected `;' before 'i'
sketch_jun04a:2612: error: 'i' was not declared in this scope
sketch_jun04a:2623: error: 'has_rpm' was not declared in this scope
sketch_jun04a:2638: error: 'get_pid' was not declared in this scope
sketch_jun04a:2640: error: 'throttle_pos' was not declared in this scope
sketch_jun04a:2640: error: expected `;' before 'tempLong'
sketch_jun04a:2642: error: 'min_throttle_pos' was not declared in this scope
sketch_jun04a:2651: error: 'get_pid' was not declared in this scope
sketch_jun04a:2653: error: 'open_load' was not declared in this scope
sketch_jun04a:2660: error: 'throttle_pos' was not declared in this scope
sketch_jun04a:2660: error: 'min_throttle_pos' was not declared in this scope
sketch_jun04a:2660: error: 'open_load' was not declared in this scope
sketch_jun04a:2668: error: 'is_pid_supported' was not declared in this scope
sketch_jun04a:2671: error: 'get_pid' was not declared in this scope
sketch_jun04a:2692: error: 'get_pid' was not declared in this scope
sketch_jun04a:2694: error: 'get_pid' was not declared in this scope
sketch_jun04a:2696: error: 'get_pid' was not declared in this scope
sketch_jun04a:2708: error: 'struct params_t' has no member named 'eng_dis'
sketch_jun04a:2725: error: 'struct params_t' has no member named 'fuel_adjust'
sketch_jun04a:2726: error: expected `;' before 'i'
sketch_jun04a:2726: error: 'i' was not declared in this scope
sketch_jun04a:2743: error: 'tvss' was not declared in this scope
sketch_jun04a:2743: error: 'tindex' was not declared in this scope
sketch_jun04a.cpp: At global scope:
sketch_jun04a:2756: error: 'byte' has not been declared
sketch_jun04a.cpp: In function 'void get_pid_internal(char*, int)':
sketch_jun04a:2768: error: 'get_trip_time' was not declared in this scope
sketch_jun04a:2770: error: 'get_trip_time' was not declared in this scope
sketch_jun04a:2772: error: 'get_trip_time' was not declared in this scope
sketch_jun04a:2774: error: 'get_trip_time' was not declared in this scope
sketch_jun04a:2776: error: 'get_trip_time' was not declared in this scope
sketch_jun04a:2778: error: 'get_trip_time' was not declared in this scope
sketch_jun04a:2786: error: 'get_engine_on_time' was not declared in this scope
sketch_jun04a:2834: error: 'nbpid_per_second' was not declared in this scope
sketch_jun04a:2840: error: 'eco_visual' was not declared in this scope
sketch_jun04a:2843: error: 'get_pid' was not declared in this scope
sketch_jun04a.cpp: At global scope:
sketch_jun04a:2846: error: variable or field 'display' declared void
sketch_jun04a:2846: error: 'byte' was not declared in this scope
sketch_jun04a:2846: error: 'byte' was not declared in this scope
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Old 09-12-2011, 04:08 AM   #34 (permalink)
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Maybe this late, but I just started making my OBDuino.

I'm using the device from dealextreme:

It contains the elm327 with all necessary peripherie and an FT232BL.
The FT232 chip ist just an "virtual COM Port to USB"-Chip.

So you just have to wire your arduino to the RX/TX Pins of the FT232 and then the OBDduino will work!! Oh don't forget to connect ground

Pictures + Videos coming soon...
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Old 09-13-2011, 06:18 PM   #35 (permalink)
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Great project! will be trying this.
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Old 09-19-2011, 04:01 AM   #36 (permalink)
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One important point i did not mention is that the elm327 in dealextreme device is working with 38400 bau not 9600 baud. So you have to modify the elm_init function

from:

serial.begin(9600);

to

serial.begin(38400);
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Old 11-10-2011, 12:21 PM   #37 (permalink)
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Quote:
Originally Posted by Kingpin3k View Post
One important point i did not mention is that the elm327 in dealextreme device is working with 38400 bau not 9600 baud. So you have to modify the elm_init function

from:

serial.begin(9600);

to

serial.begin(38400);

Hi, I am interested in doing the same thing, cand you send me the link to the dealextreme product page please
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Old 11-10-2011, 12:28 PM   #38 (permalink)
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I'm not allowed to post links but it's the device archas mentionted a few posts before...

the sku is 28528

This is the device i used...
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The Following User Says Thank You to Kingpin3k For This Useful Post:
yawnbi (11-10-2011)
Old 12-17-2011, 11:46 AM   #39 (permalink)
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Quote:
Originally Posted by Kingpin3k View Post
Maybe this late, but I just started making my OBDuino.

I'm using the device from dealextreme:

It contains the elm327 with all necessary peripherie and an FT232BL.
The FT232 chip ist just an "virtual COM Port to USB"-Chip.

So you just have to wire your arduino to the RX/TX Pins of the FT232 and then the OBDduino will work!! Oh don't forget to connect ground

Pictures + Videos coming soon...
hi, just got the dealextreme elm, trying to compile de code, but i get errors, do i need to comment/uncomment thing (exept #define elm327) to make it work?
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Old 01-18-2012, 02:49 PM   #40 (permalink)
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is there a step by step instructrable version you can post to create your own obduino?

Thanks in advance!

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