Questions tagged [python]
On-topic questions related to Python would include embedded programming, using it as a tool for circuit analysis, or how Python interacts with computational hardware. Questions about libraries, algorithms, syntax, or code optimization should be directed to stackoverflow.com.
210
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HC-06 module does not receive data from Raspberry Pi Pico
So I have a project that I'm currently working on and I am also using the HC-06 module as a part of the communication process between the Raspberry Pi Pico and my application.
A while ago when I was ...
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Raspberry Pi Pico not reading a button correctly
I connected a button to my Pico and would like to see if it is pressed in real-time.
One end of the button is connected to GPIO 15, other one to ...
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1
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88
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Raspberry Pi Pico W not executing main.py when connected with ammeter
I am trying to measure the current flow of a Raspberry Pi Pico W running simple code that blinks the onboard LED saved as 'main.py'. I have verified this code runs when connected to a) my laptop and b)...
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How to control a LewanSoul/HiWonder 16 channel servo controller with Python? [closed]
I need to control my servos with my computer, but the software that comes with the servo-majig is too clunky and slow, so I would like to write a better program in python. Im using an LSC-16-V2.0. Im ...
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2
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Using more than two I2C OLED displays on a Pico
I have a Raspberry Pi Pico running CircuitPython and I use the adafruit_ssd1306 library to drive SSD1306 OLED displays.
This works very well for two displays, but when adding the third it doesn't ...
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3
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99
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How do I plot the DC equivalent of an AC sinusoidal signal in Python?
I want to draw a line that bisects an AC signal as seen in the first picture below. This line should take into consideration any drifts.
So essentially, I have an AC voltage signal over time for 3 ...
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4
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1
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201
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FSK Modulation in Python
I am currently writing a script that uses I/Q data to do FSK modulation.
My question is about the FFT plot. I expected to have a peak at 1Hz and 2Hz which are the frequencies that represent binary 0 ...
CommunityBot
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51
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Real-Time Audio Processing
this is my first post on here so I hope I am in the right directory to ask this or if there's another channel I should sent this in, let me know.
Basically, what I am trying to do is use a sound ...
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93
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Time-varying capacitor generates higher than supply voltage? Capacitor power generators?
I was playing around with electret capacitors, supposedly time-varying capacitors with accordance with sound waves, trying to understand them deeply when I found that I need to model it mathematically,...
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23
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LSM6DS33 IMU data not behaving as expected
This is my first project using an IMU and I don't know what I am doing wrong.
I am using an LSM6DS33 connected to a Raspberry Pi via I2C. When it is sitting still I would expect the gyro values to not ...
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4
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2k
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Read negative voltage using an ADS1115
I'm currently trying to read a sine voltage between about -5 V and +5 V at 50 Hz using an ADS1115 and a Raspberry Pi.
I'm writing the code in Python and using the Adafruit library for the ADC. I have ...
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Can any one help me in writing a code for just out put VCC = 5 V for 120 sec only when there is a trigger signal thee go off all the day? [duplicate]
The red and black colors in the USB Cable all time out put VCC = 5 V and Ground = 0 V , Can any one help me in writing a code for just out put VCC = 5 V for 120 sec only when there is a trigger signal ...
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1
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732
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ESP32 WROOM switching back from MicroPython to Arduino framework
I have recently switched my ESP32's firmware to work with Python (using Thonny IDE) and I want to switch back to work with C++ and the Arduino IDE, but I remember flashing that bin file on the device.
...
CommunityBot
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19
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Data transfer between computer and Fieldfox N9917A using Python VXI-11 library
I accessed my Fieldfox device using the vx-11 library. But now I don't know which commands to access the data with. For example, with the CALC:FEED:MODE AVER command? I use Fieldfox programming guides ...
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6k
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PID controller implementation in Python
I'm trying to implement a PID controller for a magnetic field using Python.
The magnetic field needs to be around 800µT. It is generated by two coils powered by a current source (BKprecision XLN3640.)...
CommunityBot
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1
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56
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0
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1
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97
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What is the data sent by the python-dali library for the commands Turnoff, Turnon, stepup, stepdown, and getstatus to the DALI driver? [closed]
Here is the link to the python-dali library, python-dali library
command description,
The table details are taken by referring -
DALI COMMANDS 1
dali2560/dali.txt
DALI COMMANDS 3
Connections overview
...
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0
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47
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Optimise matrix inversion in python for impedance calculation
To get the impedance profile for a circuit, I am using its admittance (G) and capacitance (C) matrices.
I am using python to compute impedance profile at different frequencies but the issue is that I ...
- 51
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0
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22
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How to perform image windowing on the OV5647 CMOS sensor?
I have an Arducam 5MP OV5647 Motorized Focus CMOS camera module (which is the same as a regular 5MP Raspberry Pi Camera, but with a motorized lens for manual focusing).
https://www.arducam.com/...
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3
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1
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167
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How does LTSpice solver know the type of the component?
I am doing automation of LTSpice using PyLTSpice library in Python.
I need to know the types of the components in the netlist or in the raw file.
How can I know programmatically that ...
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1
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229
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Interfacing an old spectrometer with PySerial
I asked this question on the Engineering StackExchange and someone said it might be more appropriate here.
I want to interface an old Shimadzu spectrophotometer (Model UV-1601, manual here) through ...
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2
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269
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Undesirable dim light of LEDs on 7 segment display
I have a 7 segment display (common cathode) with 2 LEDs in each segment, powered by 12V, each segment controlled with a transistor (NPN) and Raspberry Pi 3.3V GPIO (and 4026 IC). What could be the ...
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117
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JFET Id calculation mismatch in SPICE
I'm simulating the following circuit in PySpice:
simulate this circuit – Schematic created using CircuitLab
In this configuration, the N-JFET is always in saturation mode, as you can see by the ...
- 384k
2
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1
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165
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voltage divider using skrf
I'm trying to use Python skrf's Circuit description and started with a voltage divider but I must be mis-using the library because my attempt does not give a realistic result. The circuit I try to ...
- 6,409
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1
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996
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SPI communication problem between Raspberry Pi and STM32
I've spent a couple of days to find answer to my problem. Currently I'm working on a project where an STM32L432KC microcontroller board and a Raspberry Pi 3B need to communicate over SPI. The OS on ...
CommunityBot
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124
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How to PID control a 47 Ω, 8 W resistor with a Raspberry Pi and Python?
I have a Raspberry Pi 4B, a 12 V power supply, a 12 V air pump controlled by a MOSFET, a DS18B20 for feedback and a 47 Ω, 8 W resistor that we should somehow heat. Everything up to actually heating ...
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4
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2k
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How to free up memory in a CircuitPython board?
I'm using a Feather M0 Express from Adafruit with a DS3231 Precision RTC FeatherWing for a custom clock project that displays time with LEDs.
The clock works as follows:
When the clock gets plugged ...
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1
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99
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Unable to clear faults on Monoblock via RS232 command: Need help decoding serial messages with Arduino
I recently purchased an XRB160PN192 Monoblock with a known fault of high voltage (HV) for a low price to use in my graduation project. After reading the user manual, I found that the HV error, along ...
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390
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FlatCAM 8.994 Beta- Gerber copper layers not shown in Plot Area
I am learning to CNC mill my first PCB. As project to learn it, I have chosen the QuinLED V2.6 PCB, which should have wide enough traces and pads to work as milled board hopefully.
This is what I see ...
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21
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6
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LTspice automation
I have a battery-powered boost converter and I'm attempting to measure the maximum input (battery) voltage droop under various load conditions of high current draws (different duty-cycles/...
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61
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What USB device can I use to check for voltage on or off? [closed]
I am looking for a device (ideally a USB device) which I can use to check automatically if there is some voltage (3.3 V) at an electrical connection.
The idea is to automatically test (with a python ...
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104
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Calculating voltage of a circuit with changing current
I'm taking a class about batteries and circuits, and I'm trying a bunch of practice problems in Python. I'm having trouble solving for the voltage of a battery's circuit:
I am given that, with a ...
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193
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I need help understanding this Python program for reading TDS and pH sensors on a Raspberry Pi 4B
I have a Python program for reading both TDS and pH sensors on a Raspberry Pi 4 and sending the data to the Blynk app.
I have a question about the code:
...
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77
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python vs matlab? [closed]
What is so special about MATLAB? Why in engineering (especially electrical engineering) hasn't pyhton replaced it?
I was watching a Youtube video regarding MATLAB:
https://www.youtube.com/watch?v=...
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Solving electrical network in Python
I have a complicated electrical network. I would like to calculate voltage drop across across the network i.e. nodes 2-15, given V1=10 V and V16=0 V. The values of the resistances are known.
Is there ...
CommunityBot
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I fried my Raspberry Pi while using L298N but I don't understand why
Everything seems to indicate that I fried my raspberry pi: the green light wouldn't turn on, I changed the SD card for a new one but it still didn't work. That is a shame because I was having a lot ...
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2
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61
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Getting valid input from ultrasonic range finder
I am trying to monitor the feed hopper for my pellet furnace. I had a Seed Studio Ultrasonic range finder lying about.
I used an example script to get started, and set up some simple "error ...
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0
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76
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Demodulation of IQ signals from SDRs
I am writing a Python program for an SDR in which I need to process the signal that the SDR will receive. My problem is that the SDR provides an array of complex values, which is tantamount to using ...
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1
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Run Ngspice in batch mode or with Python
For circuit simulations I have mostly been using LTpice, where the netlist is generated automatically with a Python script I wrote and run using the following Python command:
...
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1
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115
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Wired ESP8266 Communication
I have been looking for the cheapest/easiest way to get 100 or so different i/o devices to all talk to a "Master." (Sending temp data, receiving motor information) Since i am looking for a ...
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How to read MOXA gate Modbus RTU to Modbus TCP in Python?
I have got some MOXA devices. One of them is an Mgate MB3180. I want to code in a program in Python to read the data using TCP.
I don't know if I have to use a regular "TCP reading" or an &...
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How to determine which I2C commands to execute to arrive at a desired result?
I have successfully established bidirectional communication between a featherS2 board and a Mikroe UART to I2C bridge.
I do this by instantiating the address of an I2C command from page 16 of this ...
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How to properly use i2c.writeto_then_readfrom() method
See also follow-up question about i2c addresses
I have this mikroe board wired up to an S2 Feather via the SDA and SCL pins. The ...
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Why am I detecting two I2C addresses on the same board, and why do neither of them appear in the datasheet?
I have this MIKROE board wired up to an S2 Feather via the SDA and SCL pins. The MIKROE board is powered by the Feather via <...
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2
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Python to trigger USB square wave pulse for camera
I'm sorry if this was posted somewhere, but I'm trying to trigger a FLIR camera for acquisition using a USB port. I already purchased a USB split cable, and have queried the ports, so I know exactly ...
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VISA: (Hex 0xBFFF0015) Timeout expired before operation completed
I'm writing a simple code in Python to remotely send commands from PC to RSHameg HM8134-3, using USB. I'm using visa to do so.
Something to note, when I write to it, it doesn't give me any errors(...
Null♦
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DMU11 IMU data straight from port with Python
This is my first python project away from learning through textbook exercises.
I have no other experience coding so sorry that the formatting is likely horrendous.
I'm using DMU11 form Silicon Sensing ...
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1
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364
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Interacting with SPICE netlists using PySpice
I am trying to come up with a generic Python program that I can use to simulate different simple electronic circuits. The actual idea is to programmaticaly change parameters and do Montecarlo analyses....
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2
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426
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What is the size of the variables declared as macros in C Programming?
I am currently trying to receive and process serial data from an STM32F401CCU6. I am receiving binary data from the STM over USB and I would like to re-assemble the raw data into what was originally ...
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2
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213
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Stepper motor going 1 step forward and 1 backward [closed]
I am trying to control stepper motors using Raspberry Pi 4 and I am facing an issue with it. I am using L9110 controller, and the stepper motor is made for 12v/0.4A. I have a power supply and ...
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