This page (revision-14) was last changed on 2020-01-20 09:52 by Murray Altheim

This page was created on 2020-01-19 21:55 by Murray Altheim

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Page References

Incoming links Outgoing links
Ads 1015 Analog Digital Converter
Ads1015AnalogDigitalConverter

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At line 1 changed one line
[{Image src='attach/Ads1015AnalogDigitalConverter/ads1015-thumb.jpg' link='attach/Ads1015AnalogDigitalConverter/ads1015.jpg' caption='ADS1015 Analog-Digital Converter (click to enlarge)' align='right' class='imgFloatRight'}]
[{Image src='attach/Ads1015AnalogDigitalConverter/ads1015-chip.jpg' caption='ADS1015 Integrated Circuit (enlarged 20x; actual size: 2 x 1.5mm)' align='left' class='imgFloatLeft'}]
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The ADS1015 is a +/- 24V Analog Digital Converter implemented by Pimoroni as a Breakout Garden board,
i.e., an [I2C] compatible breakout board. It can be used to measure an analog voltage between -24V DC to +24V DC,
returning a value with 12 bit precision.
The Texas Instruments __ADS1015 +/-24V Analog Digital Converter__ is a 2 x 1.5mm integrated circuit implemented by both AdaFruit and Pimoroni as [I2C]-compatible breakout boards (Pimoroni's is a "Breakout Garden" board). It can be used to measure analog voltage sources between -24V DC to +24V DC at sampling rates up to 3.3kHz, returning a value with 12 bit precision.
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It has three channels (labeled {{{A0}}}, {{{A1}}} and {{{A2}}}) that can read voltages from -24V to
+24V at sampling rates up to 3.3KHz with a 12-bit resolution.
The ADS1015 has four channels (labeled {{{A0}}}, {{{A1}}}, {{{A2}}} and {{{A3}}}). The Pimoroni board only provides three of these channels as usable pins.
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The thumbnail image to the right is roughly the size of the board, which measures 24 x 21mm. The price on the Pimoroni site (as of January 2020) is £12 (~NZ$24).
[{Image src='attach/Ads1015AnalogDigitalConverter/ads1015-thumb.jpg' link='attach/Ads1015AnalogDigitalConverter/ads1015.jpg' caption='ADS1015 Breakout Boards (click to enlarge)' align='right' class='imgFloatRight'}]
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The thumbnail image to the right is roughly the size of the Adafruit and Pimoroni boards, which measure 28 x 17mm and 24 x 21mm respectively.
As of January 2020 the price of the AdaFruit board is US$9 (~NZ$14), also available from DigiKey NZ at NZ$16.57 (where shipping is free if you order over NZ$66). The price of the Pimoroni board is £12 (~NZ$24).
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* 12-bit precision
* 12-bit precision (Adafruit also sell a 16-bit version, see [ADS1115|https://www.adafruit.com/product/1085])
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* Three channels
* Programmable gain (please consult the [ADS1015 TI datasheet|http://www.ti.com/lit/ds/symlink/ads1015.pdf] for details; the default is set at ±2.048V)
* Up to 3.3KHz sampling rate
* I2C interface (address 0x48/0x49 (cut trace))
* the TI ADS1015 has four channels: AdaFruit's provides all four, whereas Pimoroni's board only provides connections to three of them
* programmable gain (please consult the [ADS1015 TI datasheet|http://www.ti.com/lit/ds/symlink/ads1015.pdf] for details; the default is set at ±2.048V)
* pp to 3.3KHz sampling rate
* [I2C] interface: the Pimoroni board uses address 0x48 or 0x49 with a cut trace; the Adafruit board can be programmed for up to 4 different addresses)
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* Reverse polarity protection
* Compatible with all models of Raspberry Pi, and Arduino
* [ads1015-python library | https://github.com/pimoroni/ads1015-python] on github
* reverse polarity protection
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Both boards are compatible with all models of Raspberry Pi and Arduino, depending on which software libraries
you intend to use.
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You'll need [Python] and {{{pip}}} (or {{{pip3}}} for Python 3) already installed.
The Adafruit board has its own installation page (which we won't repeat here, see ''[References|https://service.robots.org.nz/wiki/Edit.jsp?page=Ads1015AnalogDigitalConverter#section-Ads1015AnalogDigitalConverter-References]'' below).
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If you're using Python 2, just run:
For the Pimoroni board, [Python] and {{{pip}}} (or {{{pip3}}} for Python 3) must be installed.
Then, if you're using Python 2, just run:
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For Python 3, use:
or for Python 3:
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* [!!! ADS1015 +/-24V ADC breakout|https://shop.pimoroni.com/products/ads1015-adc-breakout] product page
* [ADS1015 12-Bit ADC - 4 Channel with Programmable Gain Amplifier|https://www.adafruit.com/product/1083] Adafruit product page
** [Adafruit 4-Channel ADC Breakouts: A guide to the ADS1115 and ADS1015 analog converters|https://learn.adafruit.com/adafruit-4-channel-adc-breakouts/]
* [ADS1015 +/-24V ADC breakout|https://shop.pimoroni.com/products/ads1015-adc-breakout] Pimoroni product page
** [ads1015-python library | https://github.com/pimoroni/ads1015-python] on github
* [Adafruit ADS1015|https://www.digikey.co.nz/catalog/en/partgroup/ads1015-12-bit-adc-4-channel-with-programmable-gain-amplifier/49471] product page on DigiKey
This page (revision-14) was last changed on 2020-01-20 09:52 by Murray AltheimTop