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1-Wire iButton Reader: Difference between revisions

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==Introduction to the product==
{{Template:1-Wire Accessory|accessory=iButton}}
 
 
'''Description:'''
 
One of the implemented features for fleet management devices is 1-Wire data protocol, which can be used for iButton reading. It is the most straight-forward way to implement driver authorization in your vehicles.
 
'''1-Wire iButton readers are great in these use cases:'''
 
*Immobilizer - prevent anyone from starting the vehicle without scanning an iButton first.
*Authorized driving - keep track of who is driving your vehicle according to the iButton ID they use to authenticate themselves.
*AutoGeofencing – gives ability to know when car leaves customized areas without iButton authorization.
<br>
[[File:IButton_reader.jpg|alt=|right|400x400px]]
 
 
<br>
 
 
 
==Product Specification==
 
 
{| class="wikitable"
|+
! style="width:50%; border: 1px solid white; border-bottom: 2px solid #0054A6; background: white; color: #0054A6; text-align: left;" |NAME
! style="border: 1px solid white; border-bottom: 2px solid #0054A6; background: white; color: #0054A6; text-align: left;" |DESCRIPTION
|-
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |Interface
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |1-Wire Interface
|-
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |Wiring
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |White wire = 1-wire signal, Brown wire = Ground
|-
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |Case material
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |Plastic (polyacetal)
|-
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |Ring material
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |Ferrite steel with chrome plating
|-
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |Signal joint material
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |Brass with chrome plating
|-
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |Fastening method
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |M12 screw
|-
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |Wire dimensions 2 wires
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |Ø 0,25 mm2
|-
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |Cable length
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |40 cm
|-
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |Operating temperature
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |-40 ºC to +85 ºC
|-
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |Operating humidity
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |Up to 70%
|-
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |Supported by
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |<span class="mw-collapsible mw-collapsed"> [https://wiki.teltonika-gps.com/view/FMB110 FMB110], [https://wiki.teltonika-gps.com/view/FMB120 FMB120], [https://wiki.teltonika-gps.com/view/FMB122 FMB122], [https://wiki.teltonika-gps.com/view/FMB125 FMB125], [https://wiki.teltonika-gps.com/view/FMU125 FMU125], [https://wiki.teltonika-gps.com/view/FMM125 FMM125], [https://wiki.teltonika-gps.com/view/FMC125 FMC125], [https://wiki.teltonika-gps.com/view/FMB130 FMB130], [https://wiki.teltonika-gps.com/view/FMU130 FMU130], [https://wiki.teltonika-gps.com/view/FMC130 FMC130], [https://wiki.teltonika-gps.com/view/FMM130 FMM130], [https://wiki.teltonika-gps.com/view/FMB140 FMB140], [https://wiki.teltonika-gps.com/view/FMB202 FMB202], [https://wiki.teltonika-gps.com/view/FMB204 FMB204], [https://wiki.teltonika-gps.com/view/FMB640 FMB640], [https://wiki.teltonika-gps.com/view/FMC640 FMC640], [https://wiki.teltonika-gps.com/view/FMM640 FMM640] </span>
|-
|}
 
 
==Installation==
To connect the 1-wire iButton reader, simply connect the 1-Wire Signal wire from the reader to the 1-Wire Data pin on the device, and connect the ground wire to the same grounding used for the device.
 
[[File:IButton RFID connection2.png|frameless|682x682px]]
{| class="wikitable"
|+
! style="width:10%; border: 1px solid white; border-bottom: 2px solid #0054A6; background: white; color: #0054A6; text-align: left;" |PIN NUMBER
! style="width:15%; border: 1px solid white; border-bottom: 2px solid #0054A6; background: white; color: #0054A6; text-align: left;" |PIN NAME
! style="width:25%; border: 1px solid white; border-bottom: 2px solid #0054A6; background: white; color: #0054A6; text-align: left;" |
DESCRIPTION
|-
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |1
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |<span style="color:#00B000">'''1-wire Data (Dallas Data)'''</span>
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |Sends iButton ID
|-
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |2
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |<span style="color:#000000">'''GND''' </span>(-)
| style="border: 1px solid white; border-bottom: 2px solid #E8E8E8; text-align: left; vertical-align: center; background: white;" |Ground.
|}
 
<br />
 
==Device configuration==
The reader works as soon as it is connected, but the iButton isn't used anywhere other than displayed in the iButton I/O element. In order to use it for the Immobilizer scenario, the device must have the scenario enabled. Then, iButton check can be enabled to only accept iButtons specified in the iButton list under the 1-Wire tab. </br></br>[[File:IButtonReaderConfig.png|border|frameless|682x682px]]
 
[[File:Io_1wire_temp2.png|frameless|682x682px]]
 
<br>
[[Category:Accessories]]
[[Category:Accessories]]

Latest revision as of 13:51, 30 January 2026

Main Page > Accessories > 1-Wire iButton Reader

Introduction

1-Wire data protocol, implemented in many Teltonika devices, can be used to read iButtons.

1-Wire iButton readers are a convenient way to implement driver authorization and other functionalities.

Use cases:

  • Immobilizer - prevent the starting of a vehicle without first scanning an iButton.
  • Authorized driving - keep track of who is driving the vehicle according to the iButton they use to authenticate themselves.
  • Auto Geofencing - get notified when a vehicle leaves a pre-defined area without authorization.









Specifications

NAME DESCRIPTION
Interface 1-Wire
Wiring White = 1-wire signal, Brown = Ground
Case material Plastic (polyacetal)
Ring material Ferrite steel with chrome plating
Signal joint material Brass with chrome plating
Fastening method M12 screw
Wire dimensions 2 wires Ø 0,25 mm2
Cable length 40 cm
Operating temperature -40 ºC to +85 ºC
Operating humidity Up to 70%
Supported by FMB110, FMB120, FMB122, FMB125, FMU125, FMM125, FMC125, FMB130, FMU130, FMC130, FMM130, FMB140, FMB202, FMB204, FMB640, FMC640, FMM640

Installation

Note! This chapter describes the installation of an accessory supplied by Teltonika. Accessories from other manufacturers may require different steps.
 To connect the accessory to your system:

  1. Connect the ground wire to the same grounding used for the device.
  2. Connect the 1-Wire Signal wire from the reader to the 1-Wire Data pin on the device.

PIN NAME DESCRIPTION
1 1-wire Data (Dallas Data) Sends iButton ID
2 GND (-) Ground

Tracker Configuration

The reader works as soon as it is connected, but the iButton isn't used anywhere other than displayed in the iButton I/O element. In order to use it for the Immobilizer scenario, the device must have the scenario enabled. Then, iButton check can be enabled to only accept iButtons specified in the iButton list under the 1-Wire tab.

Converting IO values to IDs

This short guide explains how to convert the iButton value in "I/O" menu to an ID usable in the iButton list in "1-Wire" menu.

Note! For FMx6 trackers, you do not need to convert these values.

  1. Connect your 1-Wire accessory to the tracker according to the wiring scheme.
  2. Connect the tracker to a PC, run Teltonika Configurator.
  3. Open the "I/O" menu and find the "iButton" parameter.
  4. Scan the 1-Wire accessory on the reader. The value in Configurator will shortly change.
  5. Take the value (here: 01437829000700CF) and convert it using the method shown below - then you will be able to use it in the iButton List.

Excel algorithm (copy-paste to a sheet):

  1. Column names:
    1. A1-iButton I/O
    2. B1-Removed Ox string
    3. C1-Final ID
  2. Column values:
    1. A2=0x01437829000700CF
    2. B2==MID(A2; 3; LEN(A2) - 2)
    3. C2==MID(B2; 15; 2) & MID(B2; 13; 2) & MID(B2; 11; 2) & MID(B2; 9; 2) & MID(B2; 7; 2) & MID(B2; 5; 2) & MID(B2; 3; 2) & MID(B2; 1; 2)
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