• Introducing XDA Computing: Discussion zones for Hardware, Software, and more!    Check it out!

Do dynamic guidelines for backup camera only work for installs with canbus? (TS10/Topway/Oknavi)

Search This thread

firstbob

Member
Jun 4, 2021
47
8
Hi

On my unit backup lines are fixed, they are not curving as the car is backing up even though the feature is on. Is this normal for cars that use no canbus? I have TS10/Toway HU.
 

mastrv

Senior Member
Jul 1, 2010
156
39
Yes, I believe only cars with canbus can have those dynamic curving lines for the rear backup camera.

How else would the head unit know where the steering wheel is? The canbus communicates with the car modules/compuers to get that information.
 

firstbob

Member
Jun 4, 2021
47
8
Yes, I believe only cars with canbus can have those dynamic curving lines for the rear backup camera.

How else would the head unit know where the steering wheel is? The canbus communicates with the car modules/compuers to get that information.
There are cameras that calculate the trajectory based on car movement. I thought that if cameras can do that then HU should have enough of CPU to so the same.
 

ziddey

Senior Member
Aug 26, 2007
1,816
1,563
@firstbob yeah best bet is probably to swap out for a trajectory camera from aliexpress, but I'm not sure how well they work (probably not well?). I just ordered an ahd1080p one last night. The trajectory model was only cvbs720p.
 

mastrv

Senior Member
Jul 1, 2010
156
39
Sounds interesting. I did not know that there were cameras that could estimate trajectory. My car is a 2012 with limited/minimal canbus so I run without a canbus module. I've only had static lines added by head units up until now.

Please post aliexpress link to the camera with the trajectory.

Thanks
 

firstbob

Member
Jun 4, 2021
47
8
Aliexpress descriptions are hit and miss. I presume 2053 means GalaxyCore 2053 imager. This chip is very tiny, only 1/5" diagonal, therefore I wonder how they claim good night performance. This review is not speaking highly of it: https://dashcamtalk.com/wonvon-w4k/

With that said, I don't know what is a good backup camera :) Myself, I got AHD 720p

As to trajectory, based on reviews, camera based is not accurate and only works when car is in motion/does not react to steering wheel position (obviously). I thought that perhaps HU implementation, with more CPU power could do better.
 

ziddey

Senior Member
Aug 26, 2007
1,816
1,563
Nice find. Yeah I figured it's not going to be spectacular, but still better than all the other standard 525l + ir led models.
 

firstbob

Member
Jun 4, 2021
47
8
Yeah, it's a minefield. Vendors advertising diagonal FOV to make their numbers bigger, claiming 1080p or HD for CVBS. Most 720p cameras are below 600TVL and, as you mention, IR or LED models are likely compensating for bad imaging chip and to inflate sensitivity numbers.
 

ziddey

Senior Member
Aug 26, 2007
1,816
1,563
For what it's worth, I finally wired up the ahd1080p gc2030hd the other day. Curiously, with the ground connected, there's some sort of ground loop interference. Leaving it unhooked and using the composite ground only produces a clean image. Maybe performance is inadequate if used as a dashcam, but as a reverse camera, I'm thoroughly impressed with the nighttime performance. The seller cautioned using the 1080p variant with the fyt uis7862, advising instead to opt for the ahd720p version, but it works just fine.

Still debating which guidelines to use, but I'm now very tempted to try and rig up the canbus to see if dynamic guidelines can work. My unit came with a canbus decoder, but my car doesn't send canbus wires to the radio.

c-JPtg9VQ_nya7UQR5ob2j38WqvyKMpbslcUbu_hmBSJz6lMxV9ch63jH6EWYSeu1Cf_SzUgycZB8sMMpTZ-l16Iuu63k8auA2bYjlNRNWW11RlRAnXlvyv_sBZNOYwjDCae09ks8lOWylwPnacSPXunSOjUPPEQq0d5K3kRfq_fCCXhEym84LLn1-qjFo1FgF0hBf2vzUVKOxLXc913REa6jmXYF20FqI0fQJ4BBgOvrXz5nlDq1Gcn9INlBkhdXjzNeCOdFzyRO4e2O3UPmgRXYlXbf917T3hXw6fKYU3cHv_STs4FHIKffH_dEZylreOigEGFUohUYMirsIKagn93wOw9h4S-JdPDeiJwiGJ0eQb9S-Civdjt6AUi0GMVoViZUZvxG3WCqXpO15vXyttRgPJSjyt2PzBfgYfQ-jlUIL1BQam-ElFM7U545dxS-XKPaQYU3CFlibeOjkoRut-Hc8RIWI_xsxCoXsdVKNH8qwrbW7Qe9XJnfhREC8QqE8n-FOScoMos7_ZHupZB-aAOyiT6WGl6oDFTb94khvOaITBb5-8t_qDlK4e2HthDrFX5KJA3wMAyLFsO-o2G7dYD_jCTF6P2CbdJLIaPtynbHl6vs37yTodZjUXIZ1EeY51086hCg9NDoksEnjFEaz9yzmdaBE69wvanmWpErjRU5XCg9SMZ2rDJQHcz43bfrG8bZ07MsmY0YQrmannfJOZM=w1903-h1428-no
 
Last edited:
  • Like
Reactions: firstbob

Top Liked Posts

  • There are no posts matching your filters.
  • 1
    For what it's worth, I finally wired up the ahd1080p gc2030hd the other day. Curiously, with the ground connected, there's some sort of ground loop interference. Leaving it unhooked and using the composite ground only produces a clean image. Maybe performance is inadequate if used as a dashcam, but as a reverse camera, I'm thoroughly impressed with the nighttime performance. The seller cautioned using the 1080p variant with the fyt uis7862, advising instead to opt for the ahd720p version, but it works just fine.

    Still debating which guidelines to use, but I'm now very tempted to try and rig up the canbus to see if dynamic guidelines can work. My unit came with a canbus decoder, but my car doesn't send canbus wires to the radio.

    c-JPtg9VQ_nya7UQR5ob2j38WqvyKMpbslcUbu_hmBSJz6lMxV9ch63jH6EWYSeu1Cf_SzUgycZB8sMMpTZ-l16Iuu63k8auA2bYjlNRNWW11RlRAnXlvyv_sBZNOYwjDCae09ks8lOWylwPnacSPXunSOjUPPEQq0d5K3kRfq_fCCXhEym84LLn1-qjFo1FgF0hBf2vzUVKOxLXc913REa6jmXYF20FqI0fQJ4BBgOvrXz5nlDq1Gcn9INlBkhdXjzNeCOdFzyRO4e2O3UPmgRXYlXbf917T3hXw6fKYU3cHv_STs4FHIKffH_dEZylreOigEGFUohUYMirsIKagn93wOw9h4S-JdPDeiJwiGJ0eQb9S-Civdjt6AUi0GMVoViZUZvxG3WCqXpO15vXyttRgPJSjyt2PzBfgYfQ-jlUIL1BQam-ElFM7U545dxS-XKPaQYU3CFlibeOjkoRut-Hc8RIWI_xsxCoXsdVKNH8qwrbW7Qe9XJnfhREC8QqE8n-FOScoMos7_ZHupZB-aAOyiT6WGl6oDFTb94khvOaITBb5-8t_qDlK4e2HthDrFX5KJA3wMAyLFsO-o2G7dYD_jCTF6P2CbdJLIaPtynbHl6vs37yTodZjUXIZ1EeY51086hCg9NDoksEnjFEaz9yzmdaBE69wvanmWpErjRU5XCg9SMZ2rDJQHcz43bfrG8bZ07MsmY0YQrmannfJOZM=w1903-h1428-no