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Hello guys (and girls) !!
Pls recommend me a pair of simple DAC and ADC converters, with I2C bus interfacing and no need for external voltage references...
I'm searching for the simplest possible solution but all i find are ones with very complex setups.
Thank you in advance.
you can use DDS to achieve arbitrary frenquencies up to some max value relative do the clock.
DDS means direct digital synthesis, ie, you use a sin table and a DAC to generate a senoidal signal directly.
its not hard to do at lower frequencies like those used by AM Radios.
Re: Did anybody know an "easy" way to generate/keep a clock from GPS signals ?
So i can feed the output clock to the SCLK pin as usually i would do if i had a separate clock line ?
then i keep pumping the Sync char (01010101 or 10101010) when i have nothing to send, right ?
nice... very...
Re: Did anybody know an "easy" way to generate/keep a clock from GPS signals ?
What i had in mind was to lock the clock to the GPS.
I'm planning to do the following :
1 - Get a tunable crystal clock and wire its tune pin to an DAC pin of the microcontroller.
2 - Use a prescaler to count the...
The value of the base resistors have nothing to do with turning hot.
Generally you want the transistors to go saturation state or cut state (switch mode).
1k is ok to drive a bipolar from a ttl (you just want to limit base current).
are you sure you are respecting the stepper motor steps ...
Do anybody know an "easy" way to generate/keep a clock from GPS signals ?
I'm thinking about a circuit.
I want to do serial comm without clock regeneration (no need for preamble).
I was thinking if with current technology its possible to use a GPS receiver (Those with rs232 output) to...
To make the illusion of bits moving backwards, move then 63 steps (do it very fast), then stop for some milliseconds, this will make it appear that they are moving backwards instead of the normal way.
Yes, if you have 64 leds, you need 8 shift registers of 8 bits, serial in, parallel out.
stuff bits in fast enough and no-one will be able to detect the bits shifting. then stop when the bits are in the correct place.
No because with shift registers you dont need the decoders, just stick a led to each parallel output and provide as many shift registers as you need outputs.
Its simpler.
Shift register - Wikipedia, the free encyclopedia
just a bunch of these things (a serial in, parallel out shift register of 8 bits will do with 8 shift registers, without needing decoding logic)
Hm... you can simplify the buttons, yes, you can make a button trigger two things.
But from what you describe, a microcontroller is way more suited to the task than a GAL.
You can count the number of clock pulses using a microcontroller (the microcontroller becomes the clock source of the...
1 - Define your game behaviour.
While thinking about what you said i can separate nine stages of your game :
1 - User press buttom.
2 - Game resets (all things go 0) : Reset.
3 - Preload shift register 1 with only first bit on (Load).
4 - Stop loading the 1st shift register.
5 - Start sending...
The 10MHz thing was just an example, the serial port cannot go over 931,400bps on windows, so even if possible for the led, its not useable on computer... I bet onboard UARTs cant go more than 115,200bps in practice.
But Luxeon Rebel surely can go to 5MHz or more...
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