I am trying to get a reading from an Adafruit ADS1015 breakout. I have followed the tutorial, and hooked up the board as illustrated there to an Arduino Micro. I'll show a picture of the hookup below (I am using 3.3V for the power buses on the breadboard). I am trying to get a reading from an FSR, but so far I only get a consistent result of '4095' result back from any of the ADC pins, using the singleended code example. I have tried different variations of gain (2/3x, 1x, 2x), and different pull-down resistors in the voltage divider (currently 1 KOhm). They have all still left me with the same unchanging reading.
If anyone would be able to help me understand how to continue troubleshooting this problem, I would appreciate it! Can I tell for certain, given the readings I'm getting, that the board is still operational?
Thanks for your assistance!
Note: the ADS1015 is powered by a pair of jumpers hidden under the board, and connected to the rails.
Problem getting a reading from an ADS1015
Moderators: adafruit_support_bill, adafruit
Please be positive and constructive with your questions and comments.
- adafruit_support_bill
- Posts: 88093
- Joined: Sat Feb 07, 2009 10:11 am
Re: Problem getting a reading from an ADS1015
You need to have VDD and GND connections to power the ADS1015.
- ekeen3
- Posts: 3
- Joined: Mon Jun 23, 2014 12:51 pm
Re: Problem getting a reading from an ADS1015
Thanks for the reply! I wrote in the note that the breakout is connected to VCC and GND by a pair of jumpers hidden under the board, and connected to the rails. It has power, but the connections are just hidden in the photo.
- adafruit_support_bill
- Posts: 88093
- Joined: Sat Feb 07, 2009 10:11 am
Re: Problem getting a reading from an ADS1015
What happens if you connect the input pins to GND?
- ekeen3
- Posts: 3
- Joined: Mon Jun 23, 2014 12:51 pm
Re: Problem getting a reading from an ADS1015
With the input pins connected directly to GND, I get the same consistent result of '4095' back from all of the ADC pins, using the singleended code example.
- adafruit_support_bill
- Posts: 88093
- Joined: Sat Feb 07, 2009 10:11 am
Re: Problem getting a reading from an ADS1015
Not sure what would cause that. Let's try replacing the board. Please contact [email protected] with a link to this thread and we'll get one out to you.
- mike6440
- Posts: 9
- Joined: Sat Nov 09, 2013 3:53 pm
Re: Problem getting a reading from an ADS1015
I am having this problem exactly. Vdd=5. Addr is at ground. A0=0--3 v. Output is 4095. I am using the code provided.
- adafruit_support_bill
- Posts: 88093
- Joined: Sat Feb 07, 2009 10:11 am
Re: Problem getting a reading from an ADS1015
@mike6440 - please post a photo showing your soldering and connections.
Please be positive and constructive with your questions and comments.