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Attaching Sensor to a stand-alone BlinkM possible?
Sorry for my newbie question.
I'm waiting for the arrival of my first BlinkM's.
In the meantime, I am curious whether stand-alone BlinkM allows me to attach a sensor,for instance, CdS photoresistor, as a switching device, without connection to an Arduino.
I'm waiting for the arrival of my first BlinkM's.
In the meantime, I am curious whether stand-alone BlinkM allows me to attach a sensor,for instance, CdS photoresistor, as a switching device, without connection to an Arduino.
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Inappropriate?Me again,
In the meantime, I found that sensor-attached prototypes of BlinkM already have been prepared and posted in the past.
One more question is that the BlinkM would provide enough ports for the sensor, since the LED ports of the BlinkM already have occupied.
Thanks, -
Inappropriate?Hi Bryan,
The 8-pin AVR chip used in BlinkM doesn't allow for much else once power (2 pins), LED driver (3 pins) and I2C communication (2 pins) are taken into account. The remaining pin, the RESET pin, can be reprogrammed to be an input, but then you lose the ability to reprogram the BlinkM with an AVRISP programmer (you'd need to do "high voltage serial programming" to program it) Some folk wanted to use the BlinkM board as an ATtiny45 development board they can reprogram easily with an AVRISP.
However, if you don't mind giving up I2C communication, you can then have two analog inputs for doing things like what you may have seen with my work on smart LEDs or Alex Weber's work on Programmable LEDs. Feel free to reprogram the BlinkM board to have your own software. You can also reprogram it with the BlinkM firmware.
There may eventually be a firmware upgrade for BlinkM that allows one to choose whether the I2C pins function as I2C or as analog inputs.
The company says
this answers the question
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Inappropriate?Hi, Tod.
Thank you for your kind explanation.
As a stand-alone BlinkM application for my sensor, your solution is perfect for me.
I'll visit your site on smart LEDs and Alex's on Programmble LEDs.
Glad to hear that your planning on a firmware upgrade for BlinkM's capacity expansion.- It'll be more than perfect.
Thanks again,
Bryan
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