joy-it COM-KY053ADC Analog to Digital Converter User Guide

joy-it COM-KY053ADC Analog to Digital Converter

Specifications

• Product Name: Analog to Digital Converter
• Model: COM-KY053ADC
• Manufacturer: Joy-IT powered by SIMAC Electronics GmbH
• Address: Pascalstr. 8 – 47506 Neukirchen-Vluyn
• Website: www.joy-it.net

Product Usage Instructions

Change of the I2C Address

This analog-to-digital converter (ADC) can be configured to 4 different I2C addresses. The standard address is 0x48. Use the ADDR pin to change the address following the provided table.

Pin Assignment

• VDD & GND: Power supply
• SCL & SDA: I2C interface
• ADDR: Used to select the I2C slave address
• ALRT: Used to signal conversion readiness
• A0 to A4: Analog inputs

Use with the Raspberry Pi

Connection

Connect the ADC to Raspberry Pi pins as specified ensuring the analog inputs do not exceed 3.3V.

Installation

1. Enable I2C on Raspberry Pi by running sudo raspi-config in the terminal.
2. Install pip3 using sudo apt-get install python3-pip.
3. Set up the virtual environment using the provided commands.
4. Install Adafruit_CircuitPython_ADS1x15 library with pip3 install adafruit-circuitpython-ads1x15.

GENERAL INFORMATION

Dear Customer, thank you for choosing our product. In the following, we will show you what to pay attention to during commissioning and use.

If you encounter any unexpected problems during use, please feel free to contact us.

CHANGE OF THE I2C ADDRESS

This analog to digital converter (or in short ADC) can be configured to 4 different I2C addresses. These can be chosen freely, but in the further course the standard address 0x48 is used.

In the following table you can see all possible addresses and also how to configure them. The main thing to note here is that the ADDR pin of the ADC is responsible for changing the address.

The state of the ADDR pin is continuously sampled. Be sure to connect the ADDR pin to the other pins while ensuring the possibility of further connection.

PIN ASSIGNMENT

USE WITH THE RASPBERRY PI

This guide was written under Raspberry Pi OS Bookworm for the Raspberry Pi 4 and 5. It has not been checked with newer opera-ting systems or hardware.

Connection

Here the analog-digital converter is connected to 3.3 V. This means that the converter can only measure 3.3 V on the analog inputs without suffering permanent damage.

The voltage on the analog inputs must not be higher than the supply voltage.

If you want to operate the analog-digital converter with 5 V, you need a voltage converter for the data lines, because the Raspberry Pi can be damaged at a logic level of 5 V.

Installation

First, you need to enable I2C on your Raspberry Pi. To open the configuration, enter the following command:

There select 3 Interface Options → I4 I2C and enable the I2C interface.

You have now successfully activated I2C. The analog-to-digital converter is now accessible under the I2C address 0x48, which is set by default for this sensor. The I2C address will be different if you have already configured it before configuring your Raspberry Pi.

Now install pip3 with the following command:

The next step is to set up the virtual environment. To do this, enter the following commands:

mkdir dein_projekt

cd dein_projekt
python -m venv –system-site-packages env
source env/bin/activate

We use the Adafruit_CircuitPython_ADS1x15 library for our code example, which is released under the MIT license. Use the following commands to download and install this library.

code example

Then, after you have downloaded the library, all you need to do is to execute the following command

nano COM-KY053ADC-RPi.py

to create a new file on your Raspberry Pi and then copy the following code into the file you just created or download it here.

In this code example, the digital value with the corresponding voltage of the individual inputs is displayed. The measurements of an in- put to which no voltage is applied are faulty and are therefore not representative.

You can then save the code sample with CTRL+O and close it with CTRL+X.

Afterwards you only need to execute the code sample with the following command.

python3 COM-KY053ADC-RPi.py

USE WITH THE ARDUINO

Connection

measured

–| A2| Analog signal source to be measured
–| A3| Analog signal source to be measured

Here the analog-digital converter is connected to 5 V. This means that the converter can only measure 5 V on the analog inputs without suffering permanent damage.

The voltage on the analog inputs must not be higher than the supply voltage.

Installation

For our code example, we use the library ADS1X15 by RobTillaart , which is released under the MIT license. You can install this library by searching for ADS1X15 under Sketch → Include Library → Manage Libraries….

Now you just have to click on the Install button.

Code example

To test your ADC with a code example, simply go to File → Examples → ADS1X15 in your Arduino IDE and then ADS_read …. Click Upload to upload the code example to your Arduino. Then, to get the output of the sample code displayed, open the serial monitor with a baud rate of 115200. You can also download the code sample here.

In this code example, the digital value with the corresponding voltage of the individual inputs is displayed. The measurements of an input to which no voltage is applied are faulty and are therefore not

USE WITH THE MICRO:BIT

Connection

measured

–| A3| Analog signal source to be measured

You may need to use a breakout board to connect cables to some pins of your Micro:Bit. In this example a breakout board is used. We recommend the breakout board for Micro:Bit from Joy-IT.

Installation

For control we recommend the use of the pxt-ads1115 library , which was published by us under the MIT license.

You can add the library by clicking Extensions on the Makecode page and then typing ADS1115 in the search bar. After you have done that, you just need to click on the extension to add it automatically for your current project.

Code example

To test your ADC you can download a code example from us here or simply rebuild the code yourself as shown below.

If you have decided to download our code sample, then after unzipping the file you can simply drag and drop the contents onto the Makecode web page and release to import the file and open it automatically.

Pairing the Micro: Bit

Click on the button located to the right of Upload/Download.

Click Connect Device.

Click Next.

__

Click Next.

Select your Micro:Bit in the opened window and click Connect to connect and use it.

The last thing you need to do is click on Done to be able to upload your code. You can upload the code by clicking on Download.

Now that you have paired your Micro:Bit, you can open the serial output and view your results.

OTHER INFORMATION

Our information and take-back obligations according to the Electrical and Electronic Equipment Act (ElektroG)

Symbol on electrical and electronic equipment:

This crossed-out dustbin means that electrical and electronic appliances do not belong in the household waste. You must return the old applianc- es to a collection point.

Before handing over waste batteries and accumulators that are not enclosed by waste equipment must be separated from it.

Return options

As an end user, you can return your old device (which essentially fulfills the same function as the new device purchased from us) free of charge for disposal when you purchase a new device.

Small appliances with no external dimensions greater than 25 cm can be disposed of in normal household quantities independently of the purchase of a new appliance.

Possibility of return at our company location during opening hours:

SIMAC Electronics GmbH, Pascalstr. 8, D-47506 Neukirchen-Vluyn, Germany

Possibility of return in your area:

We will send you a parcel stamp with which you can return the device to us free of charge. Please contact us by email at Service@joy-it.net or by telephone.

Information on packaging:

If you do not have suitable packaging material or do not wish to use your own, please contact us and we will send you suitable packaging.

SUPPORT

If there are still any issues pending or problems arising after your purchase, we will support you by e-mail, telephone and with our ticket support system.

Email: service@joy-it.net

Ticket system: http://support.joy-it.net

Telephone: +49 (0)2845 9360-50 (Mon – Thur: 09:00 – 17:00 o‘clock,

Fri: 09:00 – 14:30)

For further information please visit our website:

www.joy-it.net

Published: 2023.04.09

www.joy-it.net SIMAC Electronics GmbH

Pascalstr. 8, 47506 Neukirchen-Vluyn

FAQ

Q: What should I do if the ADC is not working properly?
A: If you encounter any unexpected problems during use, please feel free to contact us for assistance.

References

• ITnet | Servizi di Colocation e Cloud
• Joy-IT Helpdesk
• For Makers and Professionals | Joy-IT
• GitHub - adafruit/Adafruit_CircuitPython_ADS1x15: CircuitPython drivers for the ADS1x15 series of ADCs.
• Adafruit_CircuitPython_ADS1x15/LICENSE at main · adafruit/Adafruit_CircuitPython_ADS1x15 · GitHub
• Joy-IT · GitHub
• GitHub - joy-it/pxt-ads1115: MakeCode package for the Joy-IT COM-KY053ADC
• pxt-ads1115/LICENSE at main · joy-it/pxt-ads1115 · GitHub
• RobTillaart (Rob Tillaart) · GitHub
• GitHub - RobTillaart/ADS1X15: Arduino library for ADS1015 = I2C 12 bit ADC and ADS1115 = I2C 16 bit ADC
• ADS1X15/LICENSE at master · RobTillaart/ADS1X15 · GitHub
• Joy-IT Helpdesk
• Microsoft MakeCode for micro:bit

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