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working on a mod w a display myself...this coding for arduino is a real PITA...although seeing this has given me another idea as far as regulators to use...Def a beautiful mod Breaktru...looks like your doing the tight space work like I do...no room left in that case....
Just made a new wick and coil for my Smoktek Vivi and it wouldn't fire in the DNA.I put it in my Nokia w/ the PTN04050c and was getting over 6 amps. I looked at the resistance and it was measuring 0.5 ohms. Must have had a couple of windings touching. I since fixed the coil spacing and added two more windings around the wick and it's now at 1.5 ohms.I am amazed that a PTN04050c can deliver 6 amps. I didn't look at the wattage but I'm thinking it was over 30 watts. Didn't want to run it again with that load to see all the results.
I've been looking at this MCU Nokia mod thread for a couple of weeks now and I'm still amazed at it's beauty and performance.The enclosures size and style and the Nokia display has me drooling. This is what I've been looking for. All the readings and settings displayed on ONE screen. I luv it. I would throw away every mod I own for something like this.
Wow Breaktru has been busy since I've been gone! (Went to Africa, California, Nevada, Utah and Colorado) Fantastic work.Great to be back and see all fantastic work you been up to.
Yes that battery will do if you can house into a case. It's extremely long and a bit wide. I have the same only in 1000mah which is much smaller physically.We would love to see your mods when you complete them. Every self made mod is a winner, even if you don't thinks so. Making something yourself is big achievement and something you should be proud of.
Two 1000mAh 20C cells in parallel would give you battery impedance about 12mOhms. One 2200mAh 20C cell is around 8 mOhms. Lower is better, but 12 mOhms is plenty low enough. Comparing the two configurations, it's more a matter of preferred dimensions. I would prefer thicker and shorter over longer and thinner myself.The DNA has short circuit protection if I understand you correctly. That's really the main concern. It would expect it to handle discharge limits as well. Over-voltage protection is good to have, but it's better to use a reliable and robust charger then to add over-voltage protection inline with the battery. It just costs too much in terms of impedance. The only way you'll get an over-voltage condtion is if the charging circuit fails to regulate properly. If you use a good reliable charger, that's not going to happen.The 20C flat cells are pretty tough, they don't blow up easily as some people would lead you to believe. The RC guys blow them up, but they load the crap out of them, pushing them way out of tolerance of charge and discharge rates. I've found them to be pretty tough when you don't push them to the extreme. I have one 2200mAh cell I use for testing that's been sitting on my desk for over a year. I beat the hell out of that thing. I charge it with 5A all the time and I've over-discharged it down to nothing a couple times. It still has most of its original charge capacity and looks no worse for wear (no bloating). It's a tough sucker.
Hi Breatru. Do you have any tutorials how to program an lcd/oled display to be used for ecig? I have lots of nokia lcd's from my old phones and I really want to use them on my vv mod.
You drive me crazy with this one!
Lately I have been experiencing a blank Display. Applying finger pressure to the top middle portion of the Nokia 5110 frame brings back the display.The 5110 is a good display except for the design of the display gum connector to the PCB contact pads which makes contact using pressure.
This mod has a AtMega328p micro-controller with a Nokia cell phone display. It is powered by a 20C Lithium-Polymer battery. The boost circuit is the good ole PTN04050C.
This is the one here;https://www.adafruit.com/products/259It's a nice unit. I believe it uses the Microchip MCP73833 charger controller which is one of the best ones you can get. It's a really nice full featured controller. It's the same one I use in my own mods.
I use a Microchip MCP73833 on my controller boards and those run off a LiPo. You want the thermally enhanced part for a 1A rate which there's no reason not to use. If you try to get a 1A rate without the thermal conductivity you need, the part will go into thermal limiting and you won't get your full rate.
ATMega328p AVRNokia 5110 Graphic DisplayPTN04050C20C lithium polymer 3.7 battery1 amp USB Charger100 Amp SensorParallel 5.1A PTC resettable fuses
How did you get your ACS712 (100 amp sensor) to work off of a lipo (3~3.7v) supply when it requires 5v? What are you using this measurement for?I intend to use the internal 1.1 volt reference voltage to monitor the battery power. How are you measuring yours?I intend to use a 10ohm voltage divider circuit to measure my my coil resistance. How are you measuring yours?On a lighter note... Don't you just love the new OLEDs coming out of China? Good Riddance, HD44780, Nokia 3310/5110, and KS0108 LCDs. I won't miss you.