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Topic: iPhone serial to Arduino (Read 1 time) previous topic - next topic

Testato

yes,
multimeter do not have the necessary speed for this measure, so you measure an average.
If you use a scope you will see 0-5V
- [Guida] IDE - http://goo.gl/ln6glr
- [Lib] ST7032i LCD I2C - http://goo.gl/GNojT6
- [Lib] PCF8574+HD44780 LCD I2C - http://goo.gl/r7CstH

sjheiss

Oh. Well, the logic level converter I got doesn't appear to have metal contacts, so I'm not sure how I'm supposed to solder it...

I can always use a regular voltage divider though.

strykeroz

How could it not have?  I'm looking at a BOB08745 right now and it has rows of drills on each side which are tinned for soldering
"There is no problem so bad you can't make it worse"
- retired astronaut Chris Hadfield

sjheiss

Well the one I have has holes, but they are surrounded by white plastic, not metal. Last I checked, tin is shiny, not matte white like plastic.

Anyway, how do I build a voltage divider? I have a 10k and 15k as I've found online to work, but I've tried 3 different schematics for a voltage divider, and it never divides the voltage, even though the data goes through... I also need a 1kohm resistor between the voltage divider output and the input of the iPhone's pin.

Testato

- [Guida] IDE - http://goo.gl/ln6glr
- [Lib] ST7032i LCD I2C - http://goo.gl/GNojT6
- [Lib] PCF8574+HD44780 LCD I2C - http://goo.gl/r7CstH

sjheiss

I'm not sure what you're trying to say jennysmith, but unfortunately I had to update to 7.x, since my phone was stuck and wouldn't restore any other way. So will have to wait till this is jailbroken to try anything!

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