Hi!
My next project is to make tiny, without battery working device (an example coil and capacitor = resonance circuit) which can detect ~1 m distance. (An example 1 bit RFID device).
And this circuit which detecting the tiny circuit is my problem. I have try it with few circuit but without...
There is error in manual2:
"‘pwmout pin, off’ (=pwmout pin,0,0) command"
If I use high or low command after command pwmout pin,0,0 it doesn't work. I need to add command pwmout pin,off.
Yesterday I found many reason why I have problems with this.
- 2.transmitter power voltage too low
- wrong capacitor in R/C filtering. I was put smaller capacitor what I have used in test circuit!
- tiny SMD capacitor was disappeared from receiver circuit board (in the right hand side of the...
Some day it willl be more clear but some day can't read it property.
I have R-C-filtering but it's not sufficient. Bigger R-C filtering isn't answer, I have tryed it.
Box is mobile phone desktop charger from dealextreme.
Controllable hardware features:
-ON/OFF switch
-button
-315MHz wireless receiver
-inbuild antenna
-7 red SMD LED
-2-color red/green LED in center
-piezo element, PWM-controllable
-readable battery voltage
-vibration motor
-chargeable Li-Ion...