J
Jan Nielsen
- Jan 1, 1970
- 0
Hi,
Since most picaxe´s have a very limited amount of analoge inputs, I was
wondering if its possible to make a switch using some of the digital
outputs.
For exsample. using 4 outputs to control which sensor is being read.
I tried a simple expiriment with a transistor and a LM35 sensor, but
when I apply power my meter reads 3.6V from a 9V source on the LM35
output pin (which should be 0.26V).
I have made a rough schmatic here http://codebin.dk/stuff/switch.jpg
VDC+ is top, ignore the small + signs eagle has placed.
As stated readout is 3.6V and should be less than 1V (10mV per degree C)
/Jan
Since most picaxe´s have a very limited amount of analoge inputs, I was
wondering if its possible to make a switch using some of the digital
outputs.
For exsample. using 4 outputs to control which sensor is being read.
I tried a simple expiriment with a transistor and a LM35 sensor, but
when I apply power my meter reads 3.6V from a 9V source on the LM35
output pin (which should be 0.26V).
I have made a rough schmatic here http://codebin.dk/stuff/switch.jpg
VDC+ is top, ignore the small + signs eagle has placed.
As stated readout is 3.6V and should be less than 1V (10mV per degree C)
/Jan