The conversion of signals from analog to digital.

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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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22 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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25 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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43 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
148 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
24 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
130 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
193 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
259 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
174 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
506 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 ...
2
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1answer
293 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
656 views

Sound card for raspberry pi?

Can anyone recommend the best way of recording audio input? Are there any "sound cards" for raspberry pi's? Edit: I've seen Linux software for ham radio. And see that debian wheezy has a whole lot of ...
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1answer
498 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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1answer
978 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
123 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
561 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
304 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
390 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
415 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
794 views

What is the best way to increase digital i/o lines on Pi?

In one of my project I need 6 PWM outputs, 12 digital IO and around 6 analog inputs to be controlled by PI. What are some of the best options available to increase the IO capability of PI? For PWM, I ...
2
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1answer
1k 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
6k 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 ...
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1answer
563 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
16k views

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 ...
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2answers
2k 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 ...
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6answers
14k 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.