I hope you are well,
please, anyone, know how can I do a hardware simulation of raspberry pi with other sensors without having the board?
If by 'other sensors' you are referring to a sense HAT then,
https://projects.raspberrypi.org/en/projects/getting-started-with-the-sense-hat/2
this link will give you a hardware emulation of a sense HAT that can log temp, pressure, humidity and a lot more!
Cheers,
Levi
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Good day
The problem:
I am trying to connect/flash/debug a Olimax STM32-E407 dev board over SWD and I am not able
When trying to connect, using CubeProgrammer, I get: "No STM32 Target Found"
What I have tried:
I have connected a ST-link V3 mini to the pinout of the the 20pin header of the Olimax board including 3.3V, GND, SWDIO (PA13/Pin7), SWCLK (PA14/Pin9) and NRST (Pin15).
I am powering the powering the board from a power supply into the power jack
All jumpers and solder bridges are in stock places.
I have also tried manually pulling NRST to ground and doing a full chip erase, but that has not worked either.
I have used these ST-link debuggers on other boards I made and it works perfectly fine
I have 3 Olimax boards and none of them work
Any help would he hugely appreciated.
Debugging problems on microcontrollers have two general common methodes.
Hardware Problems:
In this part, it is highly recommended that use an oscilloscope to monitor circuit.
Make sure the microcontroller is powered with a correct and stable power supply.
Check the soldering quality and there is no short circuit on the board (especially between ground pins and other pins).
Check the NRST pin is high when the board is powered.
Remember that this reset is active low so during programming or debugging this pin should be high. Also, check this pin is debounced with a capacitor.
Also you can check the JTAG pins signals with an Oscilloscope to check if the programmer device is working fine.
Sometimes adding a capacitor between debugging pins and GND increases the bus capacitance and solves the problem. The value of the capacitor should be found by trying.
Software Problems
Check the programmer driver is correctly installed on your PC.
Check the programming method is true(for example maybe the board is designed to be programmed with SWD, not JATG).
Sometimes reducing the programming clock of the programmer solved the problem.
If all of these methods didn't work and you are sure that the board is fine, probably the programmer is broken, so change the programmer with another one.
I have spent numerous hours googling for the solution, but no tutorial or guide uses the LED's that I own. Everyone keeps mentioning Data IN, and Data OUT, but there are no such markings on my LED's.
I only know that I need to connect the 5V on LED with VBUS (Pin 40) Pin on Pi Pico, and GND on LED with GND (Pin 38) on Pi Pico.
Can someone please help me out?
I have following LED:
This piece of hardware was probably meant to be used with Wemos D1 Mini board, but you can use it with pico too. Connect D4 pin to any gpio on your pico, ground to ground and 5V to VBUS as you said. That's probably everything you have to connect. Than install Neopixel library and get the code from this link:
https://learn.adafruit.com/getting-started-with-raspberry-pi-pico-circuitpython/neopixel-leds
I don't this hardware at home, so I am not sure, but hope I at least showed you a way.
also pretty useful:
https://www.wemos.cc/en/latest/d1_mini_shield/rgb_led.html
It's possible to use a pressure sensor from a car to act like a button in raspberry pi?
Sure,
Just consider your pressure sensor as a regular push-button in the following example. Don't forget the resistor.
https://raspberrypihq.com/use-a-push-button-with-raspberry-pi-gpio/
First I want to point out that I'm very new to Raspberry Pis. I have bought a Raspberry Pi Zero for my project, because Arduino did not have enough horsepower.
My Project involves an I2C sensor and audio output (I2S). The audio is generated on the Raspberry and that is why I need the computational power.
Now I'd like to know what would be a good choice for the operating system. I don't really need anything else but the I2C and I2S and some math to generate the sound. The project is going to have the Raspberry embedded in the system and is battery powered, so it should be able to survive sudden power loss.
I found something relating to Real Time Operating systems, but I'm not sure if I need it to be exactly real time since I can buffer the generated sound data. But I do need the system to be fast, and as light as possible as the sound generation is rather heavy process.
I understand this is sort of vague question and I'm happy with any information I can get and if you could just point me in the right direction, that would be appreciated.
I am wondering if someone have an idea about the range of the wi-pi usb wireless adapter, while I am using it with Raspberry Pi and its transmission power is 20 dBm and working in 802.11b.
thanks!
Highly depends on the environment. In open area with line-of-sight it goes to 100m or even further. In indoor environment, WiFi signal may penetrate only a few brick walls.
My experience with the wi-pi is that it is a pile of junk. I have trouble getting 10m range through one brick wall that other adapters have no problem with. It regularly stops working and requires replugging. Completely unusable.