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No hay artículos en el carro Descripción:
Para microcontroladores sin convertidor analógico a digital o cuando se desea un ADC de mayor precisión, el ADS1115 proporciona una precisión de 16 bits a 3300 muestras/segundo sobre I2C. El chip se puede configurar como 4 canales de entrada de un solo extremo, o dos canales diferenciales. Como un bono agradable, incluso incluye un amplificador de ganancia programable, hasta x16, para ayudar a aumentar las señales individuales/diferenciales más pequeñas a la gama completa. El chip es bastante pequeño por lo que viene en una tabla de ruptura con ferritas para mantener el AVDD y AGND silenciosos. La interconexión se realiza a través de I2C. Simplemente conecte GND a tierra, VDD a su fuente de alimentación lógica y SCL/SDA al puerto I2C del microcontrolador y ejecute el código de ejemplo para comenzar a leer datos.
Características:
Tasa de bits ADC: 16 bits
Tipo de interfaz: I2C.
Canales: AN0 AN1 AN2 AN3 de 4 canales.
Voltaje de entrada: 2.0 V-5.5 V.
Voltaje de entrada del canal: 0-VDD.
Modo continuo: solo 150μA
Modo de disparo único: apagado automático
Velocidad de datos programable: 8 sps-860 sps.
Rango de entrada de control programado, 7 tipos de rangos de entrada:
-0.256V ~ + 0.256V, -0.512V ~ + 0.512V, -1.024V ~ + 1.024V, -2.048V ~ + 2.048V, -4.096V ~ + 4.096V, -6.144V ~ + 6.144 4 V I2C. Direcciones de 7 bits entre 0x48-0x4B
El paquete incluye:
1* ADS1115 Convertidor ADC analógico a digital de 16 bits de 4 canales.
1 cabezal de pin.
Sandra Heilman
Comentado en los Estados Unidos el 29 de enero de 2025
Great module, will buy more
Steveo250k
Comentado en los Estados Unidos el 24 de junio de 2020
I'm using this in an old 1938 Philco radio I've converted to a juke box. It plays old mp3 files from the 1930's. I'm using it with a Raspberry Pi Zero. I use this to read a pot set up to look like a radio tuning dial. Just connect power, ground, and the tap from the pot. Connect the I2C lines to the Raspberry PI and off you go. I use another pot for a volume control. At first I was confused because the volume was not linear. I had to turn the pot about half way before the volume changed. Then I realized the pot was a "linear taper". But the ADC was doing just what it should. It was easy to program and read the values with the available python libraries. Very easy to use.
Customer
Comentado en los Estados Unidos el 28 de noviembre de 2019
I love this little board. You don’t have to use all its features to appreciate it.You can hook up to 4 of them on an I2C bus. I ended up running mine at 3.3V out of paranoia to ensure the data and clock signal never exceeds the raspberry pi’s voltage threshold.It has many modes to take individual measurements or comparison measurements, including hardware triggers to take measurements.Internally it is taking samples in the gHz range and averages them to the sample frequency size you set it to take. The programmable gain is very useful if you overscale your voltage divider to protect your circuit.Internally it uses one Analog to Digital Converter but uses a multiplexer (MUX) to switch or connect the 4 measuring pins to it. This ensures consistency in all measurements. However, you can’t read all pins continuously if you want to use the fastest continuous measurement mode reading registers for latest results. You can easily switch to measure other pins but will need to kick off your continuous sample mode when done. Alternatively, you can get 2 boards set different addresses and kick off both in continuous mode.Single samples are plenty fast and do save power. However, I am regulating current and voltage to exact decimal points in real time and can change dynamically
Peter C
Comentado en Australia el 1 de septiembre de 2019
I used two of these in my project of a wifi-controlled-soundbar for reading lit-LED voltage where it was using a specific setup i.e. easily solderable test points for LED ON were 2.5V and OFF were 3.3V. Works fine, I'm not sampling nearly fast enough to even use half of its speed, however I have to substract one star for a bit disappointing interrupt mode where you can only set a single interrupt on a single channel at any given time and then you have to read the value. I'd have hoped to be able to have interrupts on all 4... Oh well! Still very solid, many libraries are ready to use with your project so integration was painless. Can recommend
N. Everson
Comentado en los Estados Unidos el 6 de abril de 2019
So this is an excellent board; (I have several) but one of the boards that I have came with the ADC chip not correctly aligned, thus the two middle AI inputs do not work.Also, this is a knockoff of the Adafruit board, and if you use the Adafruit library, the AI inputs are backwards. I've verified that the Adafruit boards are indeed correct which means that this board has a mistake in it. The inputs work, but they are reversed from the silkscreen labels.-- UPDATE:Seller reached out and offered a replacement or refund without me asking. They also indicated that they will try to update the backwards silkscreen on the board. I updated my review to reflect great customer service.
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