The conversion of signals from analog (a continuous physical quantity) to a digital representation of the quantity's amplitude.

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How fast can I read two analogue sensors using MCP3008 ADC?

I need to get measurements of voltage and current using two sensors connected through an MCP3008 ADC to the Raspberry Pi. I need to get the voltage and current waveforms simultaneously and compare ...
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0answers
43 views

Reading the MCP3304 over SPI in C with WiringPi

I wish to use the MCP3304 ADC with the RPi 2B to read a potentiometer. I have some basic understanding of how SPI works: namely, that to read from the chip I need to send it one bit every time it ...
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0answers
26 views

Easiest way to listen to analog connection?

I got a MAX 9814 but quickly realized the output is analog and not digital. I found that I could get an Arduino Nano/Micro and connect it to my Pi via a USB to USB-micro cable but I wonder if there's ...
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2answers
76 views

Can I connect any ADC to RPi?

I know that MCP 3008 can provide sampling rate around 100Ksps. I'm looking to connect ADC with sampling rate least 3Msps.
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0answers
131 views

Raspberry Pi Model A+: I2S ADC and DAC connection

I want to connect raspberry pi A+ to external DAC/ADC(audio codec) via I2S interface. Is it possible? If not, what model can I use to perform audio recording/streaming?
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1answer
468 views

Raspberry Pi, LM35 and MCP3008

I want to use Raspberry Pi to measure temperature using LM35 sensors (15-30 Celsius degrees). I can't power up the sensor with 3,3V because it requires at least 4V and also I need about 10 sensors ...
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1answer
104 views

Rasberry Pi 2 analog inputs

I am a newbie with the Raspberry Pi. I want to measure temperature from 16 sensors. Is it possible to have 16 analog inputs? If not what controller should I use, I need something with web server.
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1answer
171 views

Reading an analog signal into the raspberry pi 2

Here's the project I am working on: I would like to read in the voltage change on a sensor that I have. It has a positive and negative wire coming from it. I then have the raspberry pi 2. The positive ...
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225 views

ADC with Raspberry Pi (16 or 24 bits) with sampling rate of at least 1 MHz

Is it possible to use Raspberry Pi 2 to construct an acquisition system that is at least 1 MHz fast and with 24 bits (or 16 if 24 not possible)? Just 1 channel suffices! Everything I find is either ...
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1answer
145 views

Data logging during power loss

My Raspberry Pi, model B, is going to be sent up on a hydrogen balloon to collect data on some solar panels. I've written a python script to collect data from these panels using 3 INA219s connected to ...
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38 views

Preparing Data for FFT

I am reading one of the digital pins of my raspberry pi which is connected to a piezo disk, a buffer and an ADC. I need to know how to store the data in a way which means I can perform an FFT ...
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1answer
49 views

Storing data from input pins

I have a RPi and attached to an input pin I have an ADC (MCP3002) and an op-amp (MCP601) and a piezo element connected to them. The RPi reads the input pin, gets the digital data and at the moment ...
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2answers
233 views

Using Pi to read 1 MHz Analog Ultrasound signals

I am trying to use the Raspberry Pi to read in analog signals at 1MHz and I wanted to know how I would go about doing this. What sort of ADC should I buy, and how many? If not ADC, what do I need to ...
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1answer
1k views

how to change read channels on PCF8591

I have a PCF8591 analog to digital converter. I have it reading from AIN0 (thanks to @joan), but I cant find a reference for getting it to read from multiple channels. How would I get it to read input ...
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1answer
67 views

Converting 3.3V input to degrees Fahrenheit

I have a temp sensor (TMP 36) the same one used in the guide I am following here. I have impossible temp output. Anyone know what I did wrong? 216 temp (def F): 116582.0 216 temp (def F): 116582.0 ...
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1answer
185 views

Analog input with MCP3008

I'm trying to connect a Turner C-Sense pCO2 sensor to an RPi2B using an MCP3008 ADC. The probe is powered via dedicated 9V inverter. The probe's analog output wires include a signal out (+) and AGND ...
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1answer
207 views

Trying to use TMP36 via MCP3008 on Windows 10 iot

Can't get this working right. Any help very appreciated! I have a TMP36 on channel 0 of MCP3008 analog to digital converter then into my Raspberry Pi 2. My code and wiring is in the zip available at ...
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1answer
49 views

Raspberry Pi as an Upscaller

I have been looking at better ways of playing my old NES/SNES on modern TV's via HDMI. I like the old hardware, I like the controllers and I like hunting down the cartridges so have little interest in ...
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0answers
142 views

Precision ADCs for Raspberry Pi to minimize Gibbs phenomenon?

I would like to generate stable volts from 0 to 5 and to minimize Gibbs phenomenon without losing measurement data. I get much sudden peaks in Raspberry Pi 1/2 which I can control by adding low-pass ...
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0answers
77 views

connecting adc to pi. get 0 repeatedly instead of values

I am trying to connect an ADC to my raspberry pi B+. When I wire everything up however the only result I get is 0. Can someone tell me why? Image of my setup here and here code slightly changed from ...
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0answers
47 views

Has anyone used a Raspberry PI as a double-slope integrating analog-to-digital converter?

I am planning to setup a poor-man's ADC using a Raspberry PI and an operational amplifier wired as a double-slope integrating ADC for extremely low-frequency signals sampling (< 10 Hz). I have ...
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0answers
72 views

RTNETLINK Error with spi communication

When I use both PICAN-CAN-Bus module and MCP3008 with different cs on spi, I receive this message on terminal; RTNETLINK answers: Device or resource busy I tried to configuration can0 and I ...
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1answer
176 views

How do I read a car turn indicator is on using GPIO

I am brand new to the Raspberry Pi (PM now born-again developer, Pi still in the box etc) and this is my very first ever post so please don't slam me if I use the wrong protocol to ask this question. ...
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1answer
46 views

How can I connect an EasyADC board mikroe340?

I've got a 4-channel 12-bit ADC "Mikroe340" from Mikroelektronika (datasheet). I'm wondering how to wire it with GPIO.
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2answers
394 views

What happens if I try to read an analog pin's value?

I know there is a simple circuit you can make to be able to read an analog pin but what if I don't know if my device's pin is giving me analog or digital? If I try to read from that pin anyway am I ...
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1answer
521 views

MCP3008 alternative

I have some analog devices like LDR, temperature sensors, and other sensors and I want to use the readings of these sensors in my raspberry pi B+ , for that I need an ADC , to convert the analog ...
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1answer
477 views

Sampling on the Pi using MCP3004

I am trying to sample an analog voltage signal on the Raspberry Pi using an MCP3004 ADC. I am using the spidev package and the basic code is something like: import spidev import time list = [] ...
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2answers
389 views

Soil moisture sensor compatibility

Can this sensor for ardunino can be used with raspberry pi b+ model? The specs of the sensor are Operating voltage: 3.3V~5V Dual output mode,analog output more accurate A fixed bolt ...
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0answers
913 views

Raspberry Pi Drum Module

I have an old electric drum set with a broken sound module (the brain that you plug each jack into). As a fun DIY project I'd like to resurrect this drum kit by replacing the sound module with the ...
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1answer
644 views

ADC to capture speech (8khz, 16bit)

I am looking to capture speech and save it as a wav (Wave PCM) in RPi. Ideally the speech should be captured in 8khz with 16bit resolution and saved as a raw file or wav file. I also have a need to ...
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4answers
1k views

Sound card for raspberry pi?

Can anyone recommend the best way of recording audio input? Are there any "sound cards" for Raspberry Pis? Edit: I've seen Linux software for ham radio. And see that Debian Wheezy has a whole lot of ...
3
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1answer
967 views

Multimeter functionality for raspberry pi

Are there any sensors that would allow me to measure voltage/current/resistance similar to using a multimeter but would allow me to interface with them through a library? (for example, measuring ...
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2answers
2k views

Raspberry PI Audio Input

I am looking to use the GPIO on a Raspberry Pi to get data from an ADC for audio signal processing. For the purposes of this forum, my project is to produce a spectrum analyzer which will display the ...
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2answers
438 views

Least delay for audio processing

I am working on a project that involves real-time audio processing to do noise cancellation, so basically taking input from a microphone, doing processing, and sending out the output. It heavily ...
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0answers
994 views

Using 5 volts on an mcp3008

I have a couple different types of hall effect sensors I would like to test out using an mcp3008 ADC to interface with my pi. The sensors run on 4.5v minimum. Before I configure the ADC for 5 volts I ...
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1answer
419 views

Analog to Digital converter

Can I connect a ADC0804LCN to a raspberry pi ? http://pdf1.alldatasheet.com/datasheet-pdf/view/77309/INTERSIL/ADC0804LCN.html
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1answer
589 views

Connecting an etape using spi

I have an etape liquid level sensor http://www.adafruit.com/datasheets/eTape%20Datasheet%2012110215TC-12_040213.pdf hooked up to my raspberry pi model b through an MCP3008. The MCP3008 is connected ...
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1answer
636 views

Pcf8591 (AD/DA) module I2C, does it work with RPi?

Most of the RPi modules and equipments available online, are not available locally. This is the only ADC that is available locally to me. I'd like to know if it is compatible to use with Raspberry Pi ...
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2answers
1k views

What is the best way to increase digital I/O lines on Pi?

In one of my projects I need six PWM outputs, 12 digital I/O and around six analog inputs to be controlled by a Raspberry Pi. What are some of the best options available to increase the I/O capability ...
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1answer
2k views

Using Pi's built-in audio as general-purpose DAC?

Any common Audio output on any electronic device is in essence a two-channel Digital-to-Analog converter, where the voltage sent to each of the channels (Left, Right) powers the electromagnet that ...
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3answers
8k views

How to get an SPI Analog-to-Digital (MCP3204) working with the GPIO?

I have an MCP3204 12-bit Analog-to-Digital Converter (ADC), and a Raspberrypi. Does anyone know what I need to plug where to get them to communicate? Is there an SPI python library I can use? O am ...
6
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1answer
951 views

AD7705 analog to digital converter with RPi, viable?

I have a couple of AD7705 chips I'm attempting to use with my RPi to read the analog pins from a sensor that spits out 0~4V. Nice, detailed datasheet for the ADC is here: ...
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8answers
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Is Pi powerful enough for an oscilloscope project?

My goal is to make Pi based instruments, starting with an oscilloscope. So I read answers to What Analog to Digital Converters Are Available For RPI? How can I connect an analog to digital ...
6
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2answers
3k views

What Analog to Digital Converters Are Available For RPI?

I am interested in obtaining an ADC (Analog to Digital Converter) or Analog input for the Raspberry Pi. I understand that various boards exits to use an Arduino as input to the Pi and that Libellium ...
19
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6answers
22k views

How can I connect an analog to digital converter (ADC)?

I'm looking at options for ADC on the Rasbperry Pi. I'm wondering what is possible so far. Of course easy and cheap is good.