http://www.walrus.com/~raphael/html/usb_charge.html
That any help?
I think I already have those
Red +7 V
Brown +7 V
Black 0 V
Thanks though.
To put in different words
What is in a Nokia charger for 12 V cars?
**give me **
5 minutes and i will open mine up to see.
Lots of
capacitors, diodes and a transformer.
WOuld a picture help at all because i really dont know what im looking at.
that actually helps
Looking for someone’s DIY circuit that’s reported to work. That will help. Even if the maker describes flaws. It’s descriptions like that I’m after.
For example, this taught me that a 8210 will accept regular two wire 5 V supply. That might be true for my phone, even if it’s a different model. And it is hinting at the efficiency issue. He suggests burning off a few Watts before heating up the poor little 7805.
Once I prove that my model (still need to find its number) will also accept 5 V straight up (so far no good), I’ll dive into oddbot’s tutorial on power conversion done right.
wtf, pwm?!
Check http://pinouts.ru/CellularPhones-Nokia/nokia_5110_6110_pinout.shtml .
Could it really be the case that a Nokia uses some PWM signal over the third (brown) wire? What for?
full DLR-3 pinout. applicable to 51xx, 61xx, 62xx, 63xx series?
| Pin | Description |
|---|---|
| 1 | VIN CHARGER INPUT VOLTAGE 8.4V 0.8A |
| 2 | CHRG CTRL CHARGER CONTROL PWM 32Khz |
| 3 | XMIC MIC INPUT 60mV - 1V (also Device Selector) |
| 4 | SGND SIGNAL GROUND (also DLR-3 Vcc?) |
| 5 | XEAR EAR OUTPUT 80mV - 1V (also DLR-3 RTS) |
| 6 | MBUS 9600 B/S |
| 7 | FBUS_RX 9.6 - 230.4 KB/S |
| 8 | FBUS_TX 9.6 - 230.4 KB/S |
| 9 | L_GND CHARGER / LOGIC GND |
Zomg!!
!!!
How bizzare, why woukd they have that do you think?
charge control
I also learned that these batteries have a termometer onboard. One of the pins can be read as an thermistor. Maybe the phone can throttle the charger if it gets too hot?
Question remains: how do I fool it? Do I need to?
The model number is under
The model number is under the battery. Your picture looks just like the 3310 that I use every day.
circular reasoning
Thanks for the tip about the hidden label.
You recognising a picture I plucked from the nets isn’t gonna identify the phone in my dad’s pocket. I don’t have it with me, never photographed it. Just recognised this photo as probably being the same model. Same family (3300’s) anyway.
The “base plate” of a 3310 -
The “base plate” of a 3310 - if that’s what your dad has - doesn’t look like that. I can’t take the charger apart - it requires some wierd three legged screwdrived - but the plug looks to be a simple two wire - inner and outer. The data plate says “3.7V=/355mA”, and its model number is “ACP-7X”, which generates loads of Google hits
Thanks
Thanks for the detail. That should help me google indeed. The base plate I showed before is from a 6310i which I am using as a substitute. In hindsight: I should’ve given my dad the 6310i and keep hacking on the really old 3310.
Chances are however, he will never make the reverse swap after I’m done. And I get stuck with an antique. Hmmm, roborik might like that…
The 3310 may be old, but its
The 3310 may be old, but its a fine phone. It out performs all the swanky pda type phones that my co-workers get and then compalin that they can’t get/hold a signal
I can’t count how many times
I can’t count how many times i dropped my good ol’3310 on the floor… and never broke it! Now phones (including my actual phone) with those big tactile screens are made of sugar!
Especially the n95
3 screens ive been through on my n95, there is no protection for the screen at all.
Victory!
So I finally decided that all my previous testing was invalid. I did not have the 3310 with me and the chargers were all designed for 230V AC in. Except for one car charger that was not designed for Nokias. I corrected that todayat the expense of 13 euro. After a brief test in my car, I cracked the charger and found very little room for adding components or connectors.
But then I noticed I had a female connector I could fit in the "nose" if I would remove the shiny pin. Now it connects to one of the many convertor cables that come with the solar panel.
Here is the proof. It works! No need for bright direct sun light. Overcast is fine. Behind a window is fine. Batterij wordt opgeladen! Even if the solar panel outputs about 7-8 Volts, it will start working. Once busy charging you can even take the panel indoors and the charging will continue even if the produced voltage drops under 7 V. I reckon the Nokia charger halts at 6 or 5 V.
Whoopee. Or not? I consider this not a neat hack, but cheating. I don't really care about that. It comes with working to deadlines. Deadlines kill creativity. So stop hurrying me on those legs dammit!!!
I think it’s a good hack, I
I think it’s a good hack, I mean it works, don’t it? Shows a quick easy way to get a solar panel charging something that can be a bit finicky.