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OBDZero icon

OBDZero

3.5 for Android

The description of OBDZero

OBDZero reads, displays and stores data from the iMiev, CZero og iOn electric cars. This data such as speed and electricity use is available on the car’s CAN computer network via a Bluetooth dongle attached to the car’s OBD port. The data is presented in 7 different screens. An 8th screens logs messages between the app, the OBD dongle and the car. Two screens are intended for use while driving. One of these, the WATTS screens, shows the car’s average watts, speed and watt-hours per km. The other screen, DRIVE, updates the distance to the next charging station, the difference between the remaining range and the distance to the station, and suggests a speed to the station.
The app saves data in semicolon separated text files, either in the phone’s internal RAM or on an SD Card depending on how the phone is set up. OBDZero was developed on an older phone running Android 4.3 with an INTEY OBDII and Vgate Scan, both inexpensive Bluetooth dongles. It also runs on the more expensive OBDLink LX dongle with recent firmware. It has been tested on a newer phone running Android 7.0. The app does not exchange data with the Internet and it does not use GPS.
There is no user manual yet. However, I will try to answer questions from owners of iMiev, CZero and iOn cars. The app still has bugs so please be patient with it and I take no responsibility for any consequences of its use.

Acknowledgements and references:
Much of the code for OBDZero comes from Blueterm by pymasde.es.
The commands to the Bluetooth dongle were found in ELM327DSH.pdf from www.elmelectronics.com
The interpretations of the CAN PIDs for speed, voltage and current etc. were found on http://myimiev.com/forum/ posted by jjlink, garygid, priusfan, plaes, dax, cristi, and kiev.
Special thanks to Anders Fanøe and Allan Korup for their advice on electric car and CAN technology.
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OBDZero 3.5 Update

2020-02-10
3.5 Two new screens have been added. One shows the average speed, watts and wh/km. The other is a procedure for measuring the battery’s 100% capacity (aka State of Health) independently of the car’s estimate. This procedure is experimental so expected bugs. There is also a performance improvement particularly with the OBDLink LX dongle.

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Additional Information

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Previous versions
  • V3.5 1.7 MB APK

    OBDZero

    2020-02-10

    OBDZero 3.5 (10)

    Update on: 2020-02-10

    Requires Android: Android 4.0+ (Ice Cream Sandwich, API 14)

    Signature: 357bcc2cefbcb03a3462c8b05bda455394b4a1fe OBDZero 3.5(10) safe verified

    Screen DPI: 160-640dpi

    Architecture: universal

    File SHA1: c3f318b9b3dd6221eafb4a01c9f56f7504e8aaa6

    File Size: 1.7 MB

    What's new:

    Download

  • V3.3 1.8 MB APK

    OBDZero

    2019-08-22

    OBDZero 3.3 (9)

    Update on: 2019-08-22

    Requires Android: Android 4.0+ (Ice Cream Sandwich, API 14)

    Signature: 357bcc2cefbcb03a3462c8b05bda455394b4a1fe OBDZero 3.3(9) safe verified

    Screen DPI: 160-640dpi

    Architecture: universal

    File SHA1: e5bf1ada76f5388ffc69e87ca728873dac306df5

    File Size: 1.8 MB

    What's new:

    Download

  • V3.1 1.8 MB APK

    OBDZero

    2019-05-25

    OBDZero 3.1 (7)

    Update on: 2019-05-25

    Requires Android: Android 4.0.3+ (Ice Cream Sandwich MR1, API 15)

    Signature: 357bcc2cefbcb03a3462c8b05bda455394b4a1fe OBDZero 3.1(7) safe verified

    Screen DPI: 160-640dpi

    Architecture: universal

    File SHA1: 51eb4085bb2630d6721f2de4b22f25c00f2b405a

    File Size: 1.8 MB

    What's new:

    Download

  • V3.0 1.6 MB APK

    OBDZero

    2019-02-28

    OBDZero 3.0 (6)

    Update on: 2019-02-28

    Requires Android: Android 4.0.3+ (Ice Cream Sandwich MR1, API 15)

    Signature: 357bcc2cefbcb03a3462c8b05bda455394b4a1fe OBDZero 3.0(6) safe verified

    Screen DPI: 160-640dpi

    Architecture: universal

    File SHA1: 94bc64e79e4ddcf4fee694f43a2df8e5de1c5631

    File Size: 1.6 MB

    What's new:

    Download

  • V2.8 1.6 MB APK

    OBDZero

    2018-11-09

    OBDZero 2.8 (5)

    Update on: 2018-11-09

    Requires Android: Android 4.0.3+ (Ice Cream Sandwich MR1, API 15)

    Signature: 357bcc2cefbcb03a3462c8b05bda455394b4a1fe OBDZero 2.8(5) safe verified

    Screen DPI: 160-640dpi

    Architecture: universal

    File SHA1: 0772e65ed565609822759844d59c2368da6b0f05

    File Size: 1.6 MB

    What's new:

    Download

  • V2.6 1.7 MB APK

    OBDZero

    2018-09-06

    OBDZero 2.6 (4)

    Update on: 2018-09-06

    Requires Android: Android 4.0.3+ (Ice Cream Sandwich MR1, API 15)

    Signature: 357bcc2cefbcb03a3462c8b05bda455394b4a1fe OBDZero 2.6(4) safe verified

    Screen DPI: 160-640dpi

    Architecture: universal

    File SHA1: 51022be244c47dc171bc7e694a563d2b32095f51

    File Size: 1.7 MB

    What's new:

    Download

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