Request for Continuous Live Resistance Sampling on DNA100C After Releasing the Fire Button

[YAN GUANG LAN]

Request for Continuous Live Resistance Sampling on DNA100C After Releasing the Fire Button

Hello Evolv team and DNA community,

I am looking for technical advice on whether it is possible to restore or enable continuous live atomizer resistance measurement while the fire button is released on the DNA100C.

My goal is to have the DNA100C continuously measure and display the actual resistance of an SS316L coil as it naturally cools down after firing, rather than immediately reverting to the stored cold resistance value.

1. What I am trying to achieve

I would like the device to:

• Display the actual coil resistance while firing.

• Continue measuring resistance after releasing the fire button.

• Update the displayed resistance periodically during the natural cooling process (ideally every 0.5–1 second).

• Continue updating until the coil returns to room temperature.

• Work in both Temperature Control and Power modes.

• Use the original DNA100C chipset and its built-in measurement circuitry.

• Require no external measurement hardware or permanent USB connection to a computer.

I am not looking for an estimated resistance value. I want the actual resistance measured by the DNA100C.

2. Tests I have already performed

I have tested several approaches using Theme Designer and EScribe:

A. Atomizer Resistance field

• With "Update on Firing" enabled, resistance changes while the fire button is held.

• Once the fire button is released, the displayed value immediately returns to the stored cold resistance.

• With "Update on Firing" disabled, the resistance does not continue updating after firing.

B. Device Monitor

I tested the following script:

ECig.ClearTracking();
ECig.Track('Live Ohms')

However, it does not provide new resistance measurements after releasing the fire button.

C. Atomizer Analyzer

I also tested repeated resistance measurements while the coil was cooling down. I could not observe the resistance changing as expected.

D. Third-party themes

I have also tested alternative themes, including Pro Vapers, but none of them achieved continuous resistance updates during the cooling process.

3. Questions for Evolv and experienced DNA developers

I would particularly appreciate technical information on the following:

1. Does the DNA100C firmware support an internal command, API, event, or function that can trigger a new resistance measurement while the device is not firing?

2. Is there a hidden or undocumented Theme Designer action such as "Read Ohms", "Resample Resistance", or "Measure Resistance" that can be triggered programmatically?

3. Does the DNA100C use the same underlying resistance sampling mechanism as earlier DNA boards, or was the measurement architecture changed in the Color C generation?

4. Is there a way to periodically request a new resistance sample without activating the power output?

5. Does the firmware expose any internal ADC measurement or resistance sampling controls that could be accessed through a custom theme or modified firmware?

6. Would a firmware modification be technically possible to enable low-frequency resistance sampling during the non-firing state?

4. Hardware and firmware information

My hardware is:

• Board: Original Evolv DNA100C standalone board.

• Firmware: 1.1 SP45.1 INT.

• Coil material: SS316L.

• I also have a spare DNA100C board available for testing and experimentation.

I am willing to perform professional-level board modifications, soldering, and firmware research if necessary.

However, I would strongly prefer to retain the original DNA100C chipset, its original power regulation, temperature control, and safety features.

I am not interested in adding an external resistance measurement module or keeping the device connected to USB.

5. Why this feature matters to me

The DNA platform already provides excellent resistance measurement and temperature control during firing.

However, being able to observe the actual resistance continuously during the cooling process would be extremely useful for:

• Monitoring the real-time thermal behavior of SS316L coils.

• Studying coil cooling curves.

• Understanding resistance stability and temperature changes.

• Developing more advanced custom themes and measurement interfaces.

I understand that continuous sampling may introduce additional power consumption or measurement-related heating. Therefore, a low-frequency sampling mechanism with appropriate safeguards would be perfectly acceptable.

My main question is: Does the DNA100C have an existing internal mechanism that can be enabled or called to perform resistance measurements while not firing, or would this require a firmware modification?

Any information from Evolv engineers, firmware developers, or experienced DNA community members would be greatly appreciated.

Thank you for your time and help!

[Wayneo]

5 hours ago, YAN GUANG LAN said:

Is there a hidden or undocumented Theme Designer action such as "Read Ohms", "Resample Resistance", or "Measure Resistance" that can be triggered programmatically?

Theme Designer

Atomizer -> New coil -> Measure or Measure Again

Atomizer -> Measure Again

Both are no usb, no fire button, but there is no looping or wait in Theme Designer.