it appears to only happen with my uwell tanks. both the original and the mini.
doesn't do it with the baby beast, or the NRG, (they are both on the same coil) but i don't really like the baby beast.
i just have no luck.
also a question, when you let go of the power button does the volts and amps disappear immediately? my other mods, the info will display long enough to read it. on the Jac only the ohms stay.
The ohm reading when in TC mode is being read constantly while the mod is firing and the display of ohm will change as the reading changes.
edit to add, the NRG coils are .4 ohms. reading at .44 and not bouncing around.
the uwell coils are both .5 on the Orginal and the mini (different type coils) and they bounce around in the .6's.
Sound like it has something to do with the 510 length. Volts and amps usually disappear fairly quickly but you can usually change how long it displays.
But jumping around do you mean while vaping it? This will happen because the temperature of the coil is changing the ohm while it heats or cools. Most of the mods I use in TC show the ohm rising and falling as it is being used. But it drops back to displaying the locked in ohm within a second of letting go the fire button.
In TC mode the mod is reading the ohm of the coil continuously and will display it as it changes while the fire button is being pressed. Should drop back to the base reading after letting go of the fire button.