Questions tagged [raspberry-pi-pico]
The raspberry-pi-pico tag has no usage guidance.
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Pi Pico shorted after working fine
After working for a couple of weeks, a pi pico is just shorted.
It is used on a board that gets a midi signal as input and controls six mosfets as output.
When powered by usb maximum power is drawn, ...
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1
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What are PIO asm pindirs and how do they work?
What precisely does "pindirs" accomplish? I initially believed it defined the pin direction, indicating whether it's set as an input or an output. However, in a Raspberry Pi forum (link) it ...
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On the Raspberry Pi Pico 2040 Pinout Diagram, why are I2C bus pairs overrepresented across pins?
Picture source: Raspberry Pi's official site
RP2040 is a 32-bit dual ARM Cortex-M0+ microcontroller integrated circuit made by Raspberry Pi Ltd. In January 2021, it was released as part of the ...
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Powering a pico with a lipo battery charged by a bike dynamo
I am building a GPS tracker build on Raspberry Pi Pico and a u-blox NEO-6M GPS module. Now, I want to power this project with a lithium battery that can offer some autonomy. I was thinking of using a ...
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Raspberry Pi Pico powered by a bike dynamo
I am building a GPS tracker for my bike using a Raspberry Pi Pico and a NEO-6M GPS module.
I need this GPS to be up and running at least 14 hours a day.
The only problem is the power source. Ideally ...
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91
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Nixie Clock with Raspberry Pi Pico
I am trying to make a multifunctional nixie clock controlled with 2 Raspberry Pi Picos. Because of my mistake I can't plug every IN-12Bs into sockets. So I can only test a maximum of 4 at a time. ...
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385
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What determines an electret microphone voltage?
I am trying to get an electret microphone working with my Raspberry Pi Pico's ADC pin. I am trying to detect the output by passing it through a transistor.
I have a 4.5V voltage source. I split this ...
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Pi Pico generating YPbPr-like signal for VGA monitor
I would like to generate TED-like signal for VGA monitor input (Analog RGB + H/V-Sync). This is basically 16 pre-defined chroma values with 8 brightness levels applied, encoded as 7 bits: ...
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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 read the SN74LVC245A datasheet
I'm looking for help with how to read datasheets. For the below application, specifically what in the datasheets is it that would help me choose between these components? (datasheet for SN74LVC245A.)
...
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Can the Raspberry Pi Pico handle 10V?
I am currently trying to restart a long forgotten project of mine, because it started to bug a little. I now want to make the project more sophisticated (by not using jumper cables in "production&...
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How to test Raspberry Pi Pico after soldering header pins?
I just got my first Raspberry Pi Pico and I don't have any experience in electrical engineering.
The book I'm following indicates that I first have to solder the and the first step is to solder the ...
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56
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RPi Pico and OV2640 using C/C++ SDK
I am trying to connect an OV2640 with RPi Pico using the C++ SDK to get images over UART.
I found this library but I have been on this for days but cant figure out the PIN connection. I tried reading ...
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Raspberry Pi Pico GPIO amplification
I'm trying to control a handful of LEDs via Raspberry Pi Pico, on a single GPIO pin.
I've wired up 14 LEDs in parallel, each with it's own resistor (330 Ohm, 0.5 Watt). Combined, the LEDs need to ...
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142
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SSD1351: Image corruption (Pi Pico SPI buffer issue)
I am trying to get an SSD1351 driver working with a 128x128 OLED display, driven by a Raspberry Pi Pico. I have been able to get the statistics part of this working, however the image is being ...
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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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Wiring issues with the Raspberry Pi Pico
I am having problems wiring a water pump with the Raspberry Pi Pico.
I have the pump connected to a relay which has IN connected to GPIO 12, GND connected to a ground pin, and VCC connected to VBUS. ...
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Do ground loops matter with the Pi Pico?
The Pi Pico's pinout contains multiple ground pins:
My understanding is that this will create ground loops where current can flow.
Is this a problem? Should I only use one of the ground pins?
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Raspberry Pi Pico charging MOSFET schematic
As per the recommendation of Raspberry Pi Pico, using a P-channel enhancement type MOSFET (DMG2305UX) to switch the the power to VSYS pin isolating the battery when VBUS is available.
The schematic is ...
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Best way to communicate between microcontrollers
I am looking for the best (cheapest, smallest, least wires) way of communicating from my Raspberry Pi, to numerous inputs/outputs a few meters away (wired). For example, I will have a temperature/...
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Using a DMF5001NY-LY LCD with a Raspberry Pi Pico W
I just got myself a Raspberry Pi Pico to learn electronics and MicroPython. I was digging in my pile of "I bought this to do something one day with it, but never did" and found an old ...
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Raspberry Pi Pico: receiving on multiple UARTs
Expected behavior:
In hardware I connect UART of a number 0/1 to the correct pin numbers TX/RX and get it based on that ...
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Reading switches with no common ground on Raspberry Pi Pico
I have been trying to use a four-button PCB I had lying around in my house for one of my projects with a Raspberry Pi Pico. The problem is that I have never worked with such a layout that doesn't use ...
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AC current on relay causes Pi Pico to reboot continuously
I'm working on a project that involves a Raspberry Pi Pico driving two 4-channel relay modules. With no power supplied to the modules, everything works great - they open and close as designed for my ...
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Powering Pico and stepper motor though solar panels
The main question: Should I power the motor and Pico with a separate set of solar panels or is it solvable in one circuit?
Explanation: I am not a total beginner, but did not do electronics for about ...
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110
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Best way to connect Raspberry Pi Pico to apartment monitor?
I'm trying to power my Raspberry Pi Pico using the existing power connection for my apartment monitor (link to manual)
I note on the back of the monitor, there are unused pins, specifically a 12V and ...
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Raspberry Pi Pico: Hardware UART Tx not working
I recently got a Raspberry Pi Pico as an evaluation board for the RP2040. When I tried to use hardware UART, I found that it would not send data.
To find out what was going on, I used an LED on the Tx ...
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Boot Raspberry Pi Pico from XIP QSPI Flash
I am trying to boot a Pico from an external NOR flash module (Diligent Pmod SF3), but I can't find any information on how to configure the bootloader to do it. I looked at the documentation, but I'm ...
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Making 12 V lights fade in using Raspberry Pi Pico PWM
I have 4 small LED lights (raptor lights for a RAV4 grille) for my vehicle and I thought it would be cool if when I start my car, the outer lights would fade in, and then the inner lights would fade ...
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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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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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Corruption(?) of the Raspberry Pi Pico's UART characters with the C SDK
I'm making a remote controlled machine using a Raspberry Pi Pico to drive the motors and read some sensors, and a Raspberry Pi 4 to send commands to the Pico via serial and host the web interface.
I ...
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Trouble using the UART with Raspberry Pi Pico
I'm making a remote controlled machine using a Raspberry Pi Pico to drive the motors and read some sensors, and a Raspberry Pi 4 to send commands to the Pico via serial and host the web interface.
I'm ...
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4
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Have to drive 4 motors with a Raspberry Pi Pico. Is my schematic correct?
I have to drive a total of four motors with a Raspberry Pi Pico. I designed this schematic, but before ordering the PCB I would like to get validation from someone more experienced than me.
The whole ...
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Raspberry Pi Pico 3.3V_EN pin control voltage inquiry
I am trying to turn on or off a Raspberry Pi Pico using a Raspberry Pi Model 3.
The Raspberry Pi Pico seems to have a 3.3V_EN pin which is basically the 3.3V regulator enable pin (3V3_EN) pulled up to ...
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Sleep modes on Raspberry Pi Pico / RP2040
I am developing a circuit with Raspberry Pi Pico. To power the system from battery, I need to put the Raspberry Pi Pico / RP2040 into sleep mode in order to increase energy efficiency. For this ...
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2
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630
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Raspberry Pico and DHT11 not working C/C++
This is my wiring here:
+ is connected to 3v3, - to GND and OUT to pin28.
I'm using this ...
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Which Shottky diode do I need for redundant power to a Raspberry Pi Pico
I'm working on a project which involves setting the clock on a Pi Pico over USB and then seamlessly switching over to battery power when the USB connection is removed. How to accomplish this is ...
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How to interface a Raspberry Pi Pico to DMX / RDM
Years ago, I was looking at creating a stage DMX controller using AVR. Time moved on and the Raspberry Pi Pico has now been released. I'd like to revisit the project using a Raspberry Pi Pico, which ...
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Is the Raspberry Pi Pico pinout compatible with the Arduino Nano?
I could not see any Information regarding the pinout compatibility in the documentation:
https://www.raspberrypi.org/documentation/pico/getting-started/
To what extent is the Raspberry Pi Pico pinout ...
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