Are you sure they were talking about a switching regulator and not something like an eGo battery? Unless the switching regulator has a lot of ripple, which can happen if using crappy output capacitors, any voltage indicator should work. Switching regulators normally have a fairly clean DC output, not as clean as a linear regulator, but still, they're used to power electronics that can be sensitive to that sort of thing.
EverCool Variable Voltage Mod
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Are you sure they were talking about a switching regulator and not something like an eGo battery? Unless the switching regulator has a lot of ripple, which can happen if using crappy output capacitors, any voltage indicator should work. Switching regulators normally have a fairly clean DC output, not as clean as a linear regulator, but still, they're used to power electronics that can be sensitive to that sort of thing.
I use Mouser a lot. They don't offer first class mail as an option, but if you select USPS Priority mail and then ask they send it first class mail in the shpping instructions, they will do it. I get orders all the time from them with 2 dollar shipping. There's a little disclaimer in the instruction box saying it will slow down processing of the order, but I haven't found that to be the case. For me, in Nevada a couple states over from their warehouse in TX, I get the orders a day faster via first class mail over Priority mail.
Don't feel bad man, I've got it breadboarded exactly how it is in the diagram and still can't get it to work, I'm at a complete loss.
Not that they lied or anything.....but I've been using the LED voltage displays on my EVERCOOL mods for months, no issues at all. The only device ive found that they dont work on is the ego/riva type.
you need to check your fixed resistor, that does NOT look like a 220ohm resistor, WAY too small, needs to be a 220ohm 1/4watt resistor. Oh and looking at your pics, in your wood mod, you have the POT one way, and then in the above pic, you have it flipped....if you havent found out yet from use, one way or the other will determine what way you have to turn the screw to change the voltage i.e. right for voltage up, left for voltage down and visa versa.
Looks like 220 to me. Red, Red, Brown at 1/4 watt.
1/8 watts will work as well
1/8 watts will work as well
That's good to hear! I was just reading on their description page for it Battery Voltage Indicator and it reads..."These indicators may not work with some mods that use a switching regulator. The leds will just flash if you run into this problem." I called them and someone told me that they don't work on mosfets. Since you say you didn't have any issues with it, I will go forward with my project and use it.
Sorry for the repeat but I left out the quote.
That's good to hear! I was just reading on their description page for it Battery Voltage Indicator and it reads..."These indicators may not work with some mods that use a switching regulator. The leds will just flash if you run into this problem." I called them and someone told me that they don't work on mosfets. Since you say you didn't have any issues with it, I will go forward with my project and use it.
That's good to hear! I was just reading on their description page for it Battery Voltage Indicator and it reads..."These indicators may not work with some mods that use a switching regulator. The leds will just flash if you run into this problem." I called them and someone told me that they don't work on mosfets. Since you say you didn't have any issues with it, I will go forward with my project and use it.
I would like to add another switch to where I could switch the LED to show either the output voltage or the battery life remaining. Would someone be willing to show a schematic of how it could be wired to be able to do this?
If you get the one from madvapes, the first pin is a common ground. All other pins are positives. You coud hook up common ground to pin 1, positive wire for load voltage to pin 2, and positive wire from battery to pin 3. It will then cycle between the 2 readings in 2 second intervals. Or you could put a separate switch on each hot wire and whichever switch you push would define which reading it showed.
Thank you! I knew someone would know. Another thing I would like to add is a USB charger like this one Power Cell - LiPo Charger/Booster - SparkFun Electronics
Would this be possible? If so, where would I add it?
Would this be possible? If so, where would I add it?
That one has an onboard boost converter as well as a charger, but no, the boost converter is not powerful enough to drive an atomizer so it wouldn't help you.
This module would be more applicable and it's cheaper. Easy to hook, just 2 wires to the battery. BTW, Spark Fun has cool little goodies and I buy from them sometimes. Good quality stuff.
That module uses the Microchip MCP73831 charge management controller. I use the MCP73833 chip on my mod. Nice part.
This module would be more applicable and it's cheaper. Easy to hook, just 2 wires to the battery. BTW, Spark Fun has cool little goodies and I buy from them sometimes. Good quality stuff.
That module uses the Microchip MCP73831 charge management controller. I use the MCP73833 chip on my mod. Nice part.
Thanks for responding. Please forgive me but I am a complete newbie at modding. As I understand it, you cannot charge up 2 Li-Ion cells in series by a built-in USB charger. These chargers are made to charge 1 cell. To get 1 cell up over 3.7 volts, you would need a booster. I would prefer to have 2 cells but do not like the limitations of the Tekkeon mod. I like the idea of using an evercool especially since there would be only one cell.
When you say it is not powerful enough, what do you mean? It would boost the battery up to 5 volts and then I could use the pot to bring it back down. If you are talking about the 500mah, that is what it recharges the battery at separately from the booster output. Please tell me if I am wrong somewhere or have a better idea.
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When you say it is not powerful enough, what do you mean? It would boost the battery up to 5 volts and then I could use the pot to bring it back down. If you are talking about the 500mah, that is what it recharges the battery at separately from the booster output. Please tell me if I am wrong somewhere or have a better idea.
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Could someone explain to a newbie about the purpose, placement, and choice of ratings of the resistors and diode for the LED circuit and on the potentiometer circuit as shown on the evercool schematics? I have no experience with this stuff but can recognize their importance.
what he is saying is the booster chip on that board will not handle the amps/current running an atty. it wont work.
resistors/potentiometer is easy.... it is what "limits"/adjusts your voltage coming off of the battery and to your atty connection.
there is no diode in the evercool diagram
the resistor on the led is there to limit the amount of power that goes to the led, so if you turn your voltage up for vaping, it doesnt overpower the led causing it to burn out.
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