Problems with analogRead
My IND.I/O D21G is unable to read analog values.
When I try to analogRead it freece.
void setup() {
...
// PCD8544-compatible displays may have a different resolution...
lcd.begin();
...
Indio.setADCResolution(12);
Indio.analogReadMode(1, V5_p);
}
void loop() {
...
float fltPressure1=1;
fltPressure1=Indio.analogRead(1); //Read Analog-In CH1
lcd.setCursor(0,2);
lcd.print("Pressure: ");
lcd.print(fltPressure1);
lcd.print(" ");
}
If I comment out fltPressure1=Indio.... the LCD shows: Pressure: 1
What can possibly be wrong here?
Hi Torgeir,
Can you please confirm that you have external power (12V or 24V) connected?
Best Regards,
Loic
Yes and no, I had 24v connected, but the display showed only random pixels. The 24v was thus disconnected, but is now reconnected and now it works. Thanks.
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| Asked: 1/29/18, 7:59 PM |
| Seen: 2749 times |
| Last updated: 1/30/18, 11:58 PM |
Hi Torgeir, to add to Loic's suggestion, please do not use the V5 mode but the V10 standard instead, it should give you enough resolution in the 0-5V range.