Linked Questions
12 questions linked to/from Rpi Current Sensing Using ACS712 and INA219
2
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1
answer
7k
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ECG monitoring using ADS8232 and MCP3008 noise problem
I am making a project of Real-time ECG monitoring device using Raspberry Pi 3B+, Heart monitor AD8232 sensor by Keyes, MCP3008 ADC and 7" HDMI LCD. I am giving supply to RPi using 5V DC charger ...
- 29
2
votes
2
answers
1k
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How can Rpi read ADS1256's negative values?
I'm using this Raspberry Pi High-Precision AD/DA Expansion Board from waveshare. I have some questions regarding its ADC (model name: ADS1256) unable to give out negative value. Specifically, only ...
- 23
4
votes
2
answers
1k
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Reading Voltage Input on ADC
I'm thinking of using the Waveshare ADC board with a RaspPi 3 to monitor the current driving a DC brushless motor.
I've run through the waveshare examples, and I can handle reading inputs ...
- 41
0
votes
2
answers
1k
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Detecting Voltage With a Raspberry Pi
I want to use a Raspberry Pi to detect whether a generator has started. I had planned to hook a 5V power supply to 1 of the 240V legs on the generator and then run that through a 3.3V voltage ...
- 119
0
votes
2
answers
667
views
Turn a Raspberry Pi into a voltage tester
I would like to create a voltage tester like the one described in this video, using 555 ic, and then connect it to Raspberry Pi, in order to log the frequency a 220V waterpump is switched on.
My ...
- 119
1
vote
1
answer
2k
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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/...
- 13
3
votes
1
answer
813
views
Strange I2C behaviour
First of all: sorry for the title, I don't know how to describe further...
Background:
I'm working with the RDA5807M FM receiver chip. It worked fine for at least one month now. I just had jumper ...
- 432
0
votes
2
answers
871
views
How to detect low amp AC current with GPIO
There is switch inside a commercial gate operator that I need to monitor with my RasPi.
The switch has two ~18 AWG wires, when the switch it closed, it's 50V AC connection. When the switch is open, ...
- 3
0
votes
1
answer
927
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How can Rpi I2C read a Coulomb Counter, up to 18V, 10A?
I"m building an autonomous boat with a solar panel. The heart of the boat is a Raspi zero which contains a small program doing the navigation. I've got a 3S li-ion battery of which I'm already ...
- 305
0
votes
1
answer
724
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Reading Output signal from external circuit using Rpi GPIO Pin
I am trying to read a signal coming from an external circuit thru the use of raspberry pi's gpio. the signal I am trying to read is a 3.3V signal coming from a voltage divider circuit. this circuit ...
- 19
1
vote
1
answer
400
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Can't read the analog channels from my ADC board using raspberry pi I2C
It seems like the ADC I am using does not provide instructions about how to communicate with the pi using the I2C interface. Does that mean I can't use I2C? I have the register addresses for all the ...
1
vote
0
answers
294
views
How to read AC current sensor (10,12 channel's)
I have a python program which needs to read the power, voltage and current. (Raspberry , I2C & CT Sensor)
Please explain whether Arduino is required if we are using Raspberry. Is it possible to ...
- 11