All Questions
19 questions with no upvoted or accepted answers
2
votes
1
answer
613
views
Air pressure transducer to be connected with RPi 4
I just want a recommendation for an analog air pressure transducer with a range from 0-10 bar (to be used in an electro-pneumatic system) to be connected easily with RPi 4 (compatible with RPi 4) and ...
2
votes
0
answers
825
views
Raspberry pi 4 doesn't detect i2c devices
I am working on a gas flow sensor SFM4100. It's communcation protocol is i2c. And according to gasses bus adresses are changing. For o2 gas, address is 2.
When I connected the all pins according to ...
- 49
2
votes
0
answers
188
views
Using GPIO on the Bitwizard DMX hat board
I have a rpi 4, with a relays board on top of it, and a Bitwizard DMX hat board on top of that.
The Bitwzard board doesn't have a male header on the top, so I am unable to connect my sensors. It was ...
- 23
1
vote
0
answers
96
views
RFID to Raspberry pins
I am working on a school project and need to connect Rfid RC522 and tuchscreen to raspberry, problem is that tuchscreen is using same GPIO pins as Rfid, I Got suggested connect RFID using I2c And use ...
1
vote
0
answers
856
views
How to increase sampling rate of Raspberry Pi to 10Msps using external ADC or Microcontroller
I am working on a project where I want to use 3 electret microphones to triangulate the origin of a noise. I will add a 4th microphone for some additional accuracy. The microphones will be around ...
- 11
1
vote
0
answers
80
views
How can Rpi4B connect and read the the EC4-2000-CO sensor?
How is Raspberry pi 4 connected with EC4-2000-CO sensor? Can someone please let me know about the hardware and software setup of the same?
- 11
0
votes
0
answers
20
views
USB to RS485 Module with MODBUS-RTU RS485 Soil Sensor on Raspberry Pi 4B
If I purchase 2 of the USB to RS485 Module from DFRobot (https://www.dfrobot.com/product-2189.html) and 2 types of soil sensors which require that USB converter (https://www.dfrobot.com/product-2819....
0
votes
0
answers
15
views
Is the 8-in-one JXCT soil sensor compatible with the raspberry pi 4B?
I have a Raspberry Pi 4B and want to use the JXCT 8-in-one soil sensor with it but the documentation for the product (https://www.niubol.com/Technical-Support/Soil-Moisture-Sensor-Arduino-Code.html) ...
0
votes
0
answers
12
views
Need guidance using 4 Pico PiRP2040 and getting variation in output signals
I am using a PICO RP2040 where the trigger signal (reference voltage) is connected to GP14. I’ve programmed the Picomite to set a trigger value for a falling edge, which means the trigger should ...
0
votes
0
answers
223
views
Hooking up a rotary encoder to raspberry pi 4
There are a ton of questions on this, and I'm pretty new at working with rotary encoders. I purchased this one Taiss E38S6-600-24G, thinking (incorrectly I might add) that it would be a simple thing ...
- 1
0
votes
1
answer
175
views
Did i fry MH-Z19B CO2 sensor with my raspberry PI?
I got a new MH-Z19 Sensor, which i connected to my raspberry PI. The first time everything was okay, but later i connected the pins wrong by moving everything by one pin to the left. See the table
2 (...
0
votes
0
answers
219
views
HC-SR04 Ultrasonic Sensor Heating Up and Not Working
I have two breadboards (for the front and back of a go-kart) which are supplied by the 5V power pins of the raspberry pi 4 respectively (pins 2 and 4). However, when both are plugged in, the second ...
0
votes
0
answers
64
views
How to interface 6 HC-SR04 ultrasonic sensors rasberry pi
I am a beginner to Rasberry Pi and working on a parking warning system for a go-kart. The plan is to use 6 ultrasonic sensors (3 at the front of the kart and 3 at the back) to achieve distance ...
0
votes
0
answers
121
views
Raspberry pi does not detect compass sensor
I have a GY-91 sensor connected to raspberry pi 4B+ and only mpu6050(accelerometer, gyroscope) address 0x68 is getting detected while the compass sensor address 0x0C is not.
$ i2cdetect -y 1
0 1 ...
0
votes
0
answers
174
views
Unable to detect Capacitive Soil Moisture Sensor on my RPi 4 through ADS1115
My RPi 4 does not read any values in from my capacitive soil moisture sensor. I have a breadboard for the wiring that I will attach a photo of, and I am running a test program (simpletest.py from the ...
- 1
0
votes
0
answers
138
views
How can I know the serial port of the device of outside (UART)? Not USB
I want to ask. How do I know the serial port of the external UART from Raspberry Pi.
This is a sensor. I connected the wire to the Raspberry Pi. But I can't find which is activate port.
I searched ...
- 9
0
votes
0
answers
73
views
Temperature/PH/Humidity sensors Wireless?
I am designing an irrigation system. I have already put in place the pump piece, piloted by the Raspberry through a relay.
Please note that this is an outdoor system, so the less wires are there the ...
- 123
-1
votes
1
answer
169
views
Multiprocessing to speed up data acquisition for I2C devices
Here's my situation: I have four FDC1004 devices that I want to have connected to an array of 64 electrodes through four ADG1206 16:1 multiplexers. Each device is slaved to a pi4 using separate I2C ...
-1
votes
1
answer
433
views
PWM input to raspberry pi 4B
I want to read PWM output signal which I got from a sensor. Is there any way to give PWM signals as input to Raspberry pi 4B?
