Linked Questions

2
votes
3answers
12k views

PH-4502C pH Sensor Calibration and ADC using MCP3008, PCF8591, and ADS1115

I have a pH meter (DIY-4502C) hooked up with Raspberry Pi. However, the instructions to calibrate is in Chinese and seems outdated. Does anybody know how to calibrate it for measuring pH4-7?
2
votes
3answers
1k views

How can Rpi read ADS1256 ADC Data

I am using the AD/DA Hat from WaveShare https://www.waveshare.com/wiki/High-Precision_AD/DA_Board I want to realize a continuous readout of the data. It worked very well so far, but I am not so ...
0
votes
3answers
543 views

Rpi Reading MCP3008 10 bit ADC Result Problem

I want to measure some battery voltage in a range 0V-4.2V with MCP3008(VDD=VREF=3.3V). I used a voltage divider with R1=2.7MOhm and R2=8.2MOhm, but it didn't return correct value, I used resistors ...
1
vote
1answer
3k views

Seeed ADC (ADS1115) with Raspberry Pi 3 B+to read voltage values using python3

I'm using a Seeed 4-Channel 16-Bit ADC (ADS1115) for Raspberry Pi with a Stretch installed Raspberry Pi 3 B+ and successfully configured following below guidelines & GitHub. http://wiki....
1
vote
1answer
1k views

Connecting 4 HX711 to one Raspberry Pi

I have four individual scales that are each connected to a HX711, those HX711s are each connected to the Raspberry Pi. I'm a beginner in python as well as this Rasberry Pi. how do i properly code this ...
0
votes
2answers
1k views

Reading only 0 from ADC using RPi SPI

Everytime I try to read analog channel 0 from ADC, it only prints 0. I am confused why. I shorted MISO and MOSI on my RPi to check SPI send/receive and it was working. But if I test it after properly ...
3
votes
1answer
1k views

DS18B20 Temperature Sensor - Rpi 3/4 Driver, Wiring, Detection, and Python Programming

I am new in raspberry pi. In my research project, I would like to monitor ground temperature at 60 points. My team decided to set a monitoring system using raspberry pi. As a preliminary test, I ...
0
votes
2answers
1k views

Reading analog sensor value of 0-10Vdc with 12/16bit resolution

Dear all, I am using below model for reading analog value. I wanted to measure 0-10VDc &0-30Vdc .i wanted use it application where accuracy important. if i wanted to 12/16bit resolution of value ...
0
votes
2answers
493 views

MCP3008 with photoresistor, analog to digital, noisy readings

I am trying to read values from a photoresistor. I would like to be able to read the 'level' of light, not just a binary signal. So I bought an MCP 3008 analog to digital converter, but I am running ...
1
vote
1answer
781 views

Reading Temp/Pressure with a single Raspberry Pi

I would like to be able to read values of two thermal couples and a pressure gauge using my raspberry pi. Recording the data and then sending it to a server at the end of the day. I am using dual t/...
0
votes
1answer
714 views

Piezo sensor to pick up acoustic instrument signal using Rpi and ADC

I want to read analog inputs from piezo sensors like these on Raspberry using python, which ADC do you advise me with 8 or more channels and how to wire and program it to get digital values?
0
votes
1answer
400 views

How can Rpi read data of a heart rate sensor module, such as AD8232? [closed]

may i know what is the code you used for heart rate sensor using raspberry pi? may i get explanation on how can we use raspberry to run and show output of heart rate signal? i'm just entering pi, your ...
1
vote
1answer
298 views

How to use Rpi [python] to read [SPI MCP3008] ADC of a [water] tank level sensor?

Does anyone have any ideas on how I can use RPI with ADC to measure a tank level sensor which has a range of only 20 to 200 ohm.