[simpits-tech] Arduino: Uber-Good News!

[Ray Sotkiewicz]

After a run to Frys, and some experimenting with R/C values in the 
charge-pump & Trim circuit, I can get about  300 degrees of needle 
deflection by cycling a digital output with timings between 100ms and 7ms.

There are still some resolution issues  but I think the major hurdles 
have been cleared.

One CS8190 chip gave up his little life for the cause. I think it's 
called 'Thermal Runaway'? (9 left :-)

I'm going to do a short video on it so folks can see this...


On 2/11/2011 2:25 PM, Gene Buckle wrote:
> On Fri, 11 Feb 2011, raysot at comcast.net wrote:
>
>> I have the chip breadboarded and working(somewhat); When I power it up
>> the aircore moves. but so far no response yet in following the digital
>> freq set by arduino. Arduino is putting out a nice 0/+5v square wave...
>>
> So you're driving the chip and not getting anything out of it?
>
>> I am going to Fryes tonight to pick up the other discrete components. I
>> was all out of .1uf caps and the circuit calls for a few of them to work
>> with the ICs internal charge pump.
>>
>> I suspect that once I get the few R/C circuits added and a bit more
>> tweaking, I'll have an aircore that's responsive.
>>
> Hopefully. :)
>
>