Why though?!

[TrollDragon]

Jeez I don’t know if I could build my own vape. That would be awesome though. Fairly easy?

Yes if you have basic soldering and electronic assembly skills.
This PWM kit is quite reasonable, it uses a stock Hammond 1590B case so it has a tiny lean when standing on a flat surface. The CNC cases don't do that but they don't have any of those that are pre-drilled. It is a PWM mod so you have to build your coils within battery limits.
https://www.motleymods.com/products/pre-drilled-pwm

If you would rather build a much better mod, then ABM in Canada sells complete DNA kits.
DIY Box Mod Kits and Supplies Canada - Analog Box Mods
I've built two of his DNA 75/75C 3D printed squonkers before (Not sold any longer).

 

[greek mule]

If you look at some of the more objective reviews, such as the measurements performed by DJLsb Vapes, you can see that devices not outputting the correct wattage (or voltage) is actually quite common. It is possible a Firmware update can correct any deficiencies, assuming the developer is aware of the issue and is willing to correct. But there could be cases where this is a hardware deficiency in which case a FW update may not correct.

Looked here How can a processor be made faster with a "software" update?
and found this:"In short, while the CPU hardware is indeed hardwired, the configuration of the said hardware pretty much defines its performance, and can be tuned for better system performance by means of BIOS updates and embedded microcode patches".--My English are not great,does this mean,hardware can improve?

 

[Punk In Drublic]

Looked here How can a processor be made faster with a "software" update?
and found this:"In short, while the CPU hardware is indeed hardwired, the configuration of the said hardware pretty much defines its performance, and can be tuned for better system performance by means of BIOS updates and embedded microcode patches".--My English are not great,does this mean,hardware can improve?

Up to a certain extent. A computer, or even a vaping device such as VW mod, is a series of complex components that must work in unison.

Reading some of that post you linked, AMD may know where the improvements can be made therefore write code for said improvements. But that may not always be the case. CPU’s are instruction based…they have to wait for the information to be sent to them. A poor performing component, such as a capacitor that is not delivering the proper voltage could contribute to any kind of latency in delivering that information to the CPU. This is just the simplest of explanations but is also an example as to why we also see hardware revisions.

 

[greek mule]

Up to a certain extent. A computer, or even a vaping device such as VW mod, is a series of complex components that must work in unison.

Reading some of that post you linked, AMD may know where the improvements can be made therefore write code for said improvements. But that may not always be the case. CPU’s are instruction based…they have to wait for the information to be sent to them. A poor performing component, such as a capacitor that is not delivering the proper voltage could contribute to any kind of latency in delivering that information to the CPU. This is just the simplest of explanations but is also an example as to why we also see hardware revisions.

Thank's @Punk In Drublic

 

[Punk In Drublic]

I am not a vape chipset engineer so do not know exactly how the chipset functions when the fire button is pressed. Each chipset could be unique in their own way. There could be other instructions performed such as checking for an atomizer short before the actual microprocessor performs the firing sequence. This could be performed by a separate chip that is hardcoded and therefore can not be improved with a firmware update. This is obviously not exclusive to but could be an example of.

 

[greek mule]

I am not a vape chipset engineer so do not know exactly how the chipset functions when the fire button is pressed. Each chipset could be unique in their own way. There could be other instructions performed such as checking for an atomizer short before the actual microprocessor performs the firing sequence. This could be performed by a separate chip that is hardcoded and therefore can not be improved with a firmware update. This is obviously not exclusive to but could be an example of.

I am not a vape chipset engineer either,just trying each day learn something new!

 

[vapdivrr]

Sometimes dirty contacts, 510 pin , or a wonky connection (perhaps your connection on the poor hitting mod just doesn't make as solidly a connection) can create a less or weaker hit.

Sent from my SM-G960U using Tapatalk

 

[DaveP]

I am not a vape chipset engineer so do not know exactly how the chipset functions when the fire button is pressed. Each chipset could be unique in their own way. There could be other instructions performed such as checking for an atomizer short before the actual microprocessor performs the firing sequence. This could be performed by a separate chip that is hardcoded and therefore can not be improved with a firmware update. This is obviously not exclusive to but could be an example of.

FWIW ...

All variable mods produce a waveform that simulates the power of a DC current. Frequency (on-off time) is important. The waveform itself can make one mod vape differently than another. Sawtooth waveforms as opposed to square wave have different efficiencies. Voltage equivalence is achieved by varying the frequency of the voltage fed to the coil. As you turn it up and down, the frequency is raised and lowered to produce the wattage to the coil (on time). Square wave is better than a triangle waveform, IMO. Voltage sag at high load can make a cheap mod vape differently than a more expensive one. As you turn down the wattage on a variable mod, the voltage pulses are spaced farther apart. When it's turned up to higher wattage, the pulses are closer together and produce a waveform that's closer to pure DC.

Frequency and waveform type is everything in a synthesized vape. It's why mech users say the vape is better. You can't beat DC voltage in a mod for vape quality, but variable frequency is the affordable way to build a compact mod.

 

[AttyPops]

The microprocessors are relatively simple compared to, say, larger desktop CPUs, and they're designed for embedded systems...like many/most have dedicated PWM circuitry. Not that I'm an expert or anything, but I've messed around (a LONG time ago) with programming embedded small processors for hobby fun.

Anyway, like has been mentioned above, they can change the sequence they do things in, or modify/enhance the algorithms to make it behave differently...like the wave pattern DaveP is talking about. Different duty cycles, frequencies, etc. And it's all a matter of trade-offs. But in the end, the hardware is the hardware and they're stuck with the "mechanical side" of things as shipped.

Then there's the previously mentioned user maintenance of cleaning contacts. And if you're using a "used" device, there's wear and tear on the existing circuitry too. Stuff wears out. Stuff fails over time. Because "stuff".

And there's always the possibility that one device got a flaky clock chip or crystal or something on the assembly line.

Who knows?

All you can do is update the dang thing and see if anything changes. Since it has a range of wattage options, start low, dial it up until it works, and smile. When it dies, it dies. YOU are the operator, you still get to "drive" a bit. These things aren't going to be 100% up to some theoretical non-existent spec.

 

[TrollDragon]

Arduino sketch and build for a DIY vape mod...
GhettoVaper – an extended GhettoVape III

 

[DaveP]

Why do some mods hit harder than others? I put a 0.53 ohm build in my RDA. Placed in on one of my mods (segelei Kaos) at 50 watts and then placed it on my Tesla Wye at the same wattage and it hits way harder on my Wye. Is it the chip set? It’s frustrating, I have different mods but why do some perform better than others?

Power = voltage squared divided by resistance. So, if voltage drops, then power drops. OTOH, lowering resistance for the same voltage raises the power level. So, it's entirely possible that one of the mods has a 510 contact that is introducing more resistance into the circuit than the other. That would affect the perceived hit, especially if one mod's contacts are more resistive and aren't up to the task at 50W. You'd get a voltage drop (power not delivered to the coil) across the resistive 510 contact.

The other factor might just be calibration issues or one mod's ability to deliver more accurate wattage for a given resistance.

 

[Punk In Drublic]

Excellent post @DaveP. And yes, that is the basic functionality of how these devices operate. My post was referring to any sequence of events that may take part during the firing sequence that could contribute to any perceived latency by the user. Without knowing the actual design of the board, I am open to the possibilities that added actions may take place.

 

[Simmonsd515]

Hey guys just wanted to check back in...

Did the update and it didn’t work. Tried cleaning the connections, also didn’t work. Dialing up the power seems to be the only way to compensate for the drop in power. It is a mod I don’t use often but I will probably not purchase segelei again. I think I might even try to put together my own box mod! Such a great place to come to ask questions and also learn other stuff along the way.

Till next time.

 

[DaveP]

This might help you troubleshoot the problem. It will allow you to see the actual voltage from each mod using the same atty as well as the rise time of the voltage. I've had one for years and occasionally use it for troubleshooting. You might find that the two mods have different degrees of accuracy in their voltage synthesis hardware and algorithms. In the end though, mods are not all equal. You crank it until the vape is good.

Didn't want you to miss the disclaimer below by the seller.

*Voltage test range: 2.8v – 25v Accuracy: 5%
*It is recommended to use with resistances above .6 ohms….anything lower can result in a fried device.
Get the true performance of your mods and batteries!

Inline Voltage Meter - WhimWhamVapes.com $12.75