eChook GPT Documentation
  • Welcome to the eChook nano documentation
  • System Overview
  • The eChook Nano Kit
    • Versions
  • Build Instructions (Kit V1.x)
    • Build Steps Photos
    • First Power On
  • Build Instructions (Kit V2+)
  • Programming the Arduino
    • Install Arduino IDE
    • Arduino Drivers
    • Download the eChook Arduino Code
    • Programming the Arduino
  • Setting up the Bluetooth
    • Pairing with a phone
  • Connecting the eChook to the Car
    • Power and Voltage
    • Current Sensor
    • Throttle Input
    • External Buttons and Brake
    • Temperature Sensors
    • Wheel and Motor RPM
    • PWM Output
  • Calibrating the eChook
    • Wheel Speed and Motor RPM
    • Temperature
    • Voltage
    • Current
  • Using the App
    • Pair eChook to Phone
    • Setting up the App
    • Logging Data
    • Lap Counting
  • Telemetry (Live Data)
    • eChook Live Data
    • Node-Red Integration
    • DIY Web Dashboard
  • Using the Data
  • Circuit Schematics
    • 12 and 24v Inputs
    • Temperature Inputs
    • Bluetooth Module
    • Throttle Input
    • Current Input
    • Button Inputs
    • RPM Inputs
    • PWM Output
    • Power Regulator
    • Expansion Port
  • All about the Arduino nano
    • The eChook nano Code
  • Bluetooth Communication
    • Bluetooth Packet Encoding
    • Bluetooth Packet Decoding
  • Experimental Section
    • GUI Calibration
  • eChook Accessories
  • DIY eChook
  • Spare Parts
  • Troubleshooting
  • Contributing
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On this page
  • eChook Private Live Data
  • dweet.io (Discontinued)
  • Custom URL
  • Data available in telemetry:

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Telemetry (Live Data)

PreviousLap CountingNexteChook Live Data

Last updated 22 days ago

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One of the benefits of using a smartphone to log the data is it’s internet connection. With the exception of some tracks with poor signal, this provides an excellent opportunity to get the logged data back to the rest of the team in near real time.

The app provides three different ways to send data out.

eChook Private Live Data

This is our own in house system available at . Each car has a login, only people with that login can see your data. This is a free service provided by eChook to anyone using the app - it can also be used with custom hardware so long as it sends the correct data to the app (See section).

dweet.io (Discontinued)

Unfortunately as of the start of 2025 the dweet.io servers have been shut down and the service discontinued. There is no direct replacement for this, however if you used dweet for the node-red integration, there is a solution using the eChook live data server - see the page for more details.

Custom URL

You can enter a URL, username and password into the app and it will send data to your server in the format of:

https://username:password@example.com/../{Stringified JSON}

Data available in telemetry:

Data

Identifier

Unit

Comment

Total Voltage

Vt

Volts

Combined voltage of both batteries - ~24V expected

Lower Battery Voltage

V1

Volts

Upper battery voltage can be calculated on freeboard by Vt-V1

Current

A

Amps

Motor RPM

RPM

RPM

Vehicle Speed

Spd

Meters per second

Multiply by 2.23694 for MPH

Throttle

Thrtl

Percent

Temperature 1

Tmp1

°C

Temperature 2

Tmp2

°C

Amp Hours Used

AH

Amp hours

Lap Number

Lap

-

Current Lap number as counted by the app.

Gear

Gear

-

Current gear as calculated by app

Brake Applied

Brk

-

100 if brake is applied, 0 if not.

Longitude

Lon

Degrees

GPS Longitude. (Not available through dweet.io)

Latitude

Lat

Degrees

GPS Latitude. (Not available through dweet.io)

data.echook.uk
Bluetooth Communication
Node Red Integration