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Questions tagged [raspberry-pi-pico]

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The Raspberry Pi **Pico** is a series of microcontroller boards from the Raspberry Pi Foundation, typically using its RP2040 microcontroller chip. It is a much smaller device than the main series of Raspberry Pi computers.

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I’m trying to digitally control the output voltage of an SZ-08 buck-boost converter by replacing its onboard W204 (3296) CV trimmer with an RP2040-generated PWM signal filtered through an RC network ...
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I'm trying to control two stepper motors using BigTreeTech TMC2209 modules (datasheets & info). I'm having a very tough time trying to get them to work and I'd appreciate any help. My setup ...
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I am building a system using a Waveshare RP2040-Zero ( like a Raspberry Pi Pico ) with an HD44780-2004 LCD over I2C. I'm facing a strange issue where the text on one line of the display occasionally ...
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I am trying to communicate between 2 nRF24L01+ and am using 2 Raspberry Pi Pico's to control them. Below is my code, schematic, and the datasheet. My problem is that the transmitter always prints <...
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JLCPCB is trying to tell me that the RPi Pico W needs to be baked to reduce moisture before putting it through reflow soldering. They're saying that "It is moisture-sensitive according to the ...
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I have built a small device that fits inside an Altoids tin because it neatly fits in your pocket. In the tin: Raspberry Pi Pico 2 W 2 x Solar panels 10F supercapacitor (to power device in the event ...
Shep's user avatar
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I want to get 2 picos to communicate via UART and a HC12 chip and I managed to get it to work in the past but somehow it just stopped working. Here are the 2 picos with the HC12 chip And the code just ...
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I want to use a MDDRC10 motor driver with a Raspberry Pi Pico. But I can't get it to work from the manual. As I understand it from page 3, anything over 1.5 V will activate the channel and then I can ...
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I designed a circuit for a portable infinity mirror tetrahedron. It includes a battery to power it while it isn't docked, a pi pico W to run the 6 APA102 based LED strips, some contacts on the outside ...
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I have a 2.6 in 320x320 display that I would like to drive with the Raspberry Pi Pico 2 but I am having some issues with my code that I am not sure how to fix. I am not quite familiar with this ...
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I've written a simple program the transitions GPIO0 and GPIO1 high to low and low to high "at the same time". The board is powered over USB and not connected to anything. I've got my ...
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I want to use a nRF24L01 module with a pico but I geek on getting an error that the Hardware is not responding. I followed this video for the pinout: and the code is: ...
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I am designing a board that will be required to switch on many relays, hence I am using TPL9202 to do the work. I have validated the psuedo-circuit on a single TPL9202 on a breakout board and it works ...
Tay's user avatar
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Basically I have a connection like this. My processor is a rp2040. And when I tried to read the voltage like this: ...
PHG's user avatar
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I will preface saying that this is my first time posting here so please forgive any obvious mistake I could make. I am in the process of designing a PCB for a simple terrarium control system. Mainly, ...
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I am working on a project, where I have a Raspberry Pi Pico and then a DS1302 chip to keep time when the pico is not powerer. The whole thing is powered by a single lithium battery. The battery powers ...
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This question arises from a confusion about theory and seeing successful projects online. I want to connect a DFPlayer Mini MP3 module and a speaker to a Raspberry Pico Pi 2 microcontroller and it's ...
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I want to read the data from a Pimoroni LTR-559 sensor but it only returns None in the code. Here is the code: ...
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Im basically following this guide https://forum.arduino.cc/t/mods-to-ds3231-zs-042-module-for-power-control/1101164 However something is not working and i cant figure out what. Once Pico gets the ...
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I would love secondary opinions on my electrical set up before I turn it on, so I don't ruin any precious components. This is my first time setting up a breadboard and I am not familiar with schematic ...
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I am working on a circuit board project which requires a large amount of memory. I am looking to use a NAND FLASH chip, since I am very familiar with SPI, and very unfamiliar with eMMC, especially ...
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Given a microcontroller like a Raspberry Pi Pico 2 is powered at max 5V and has a current limit of around 16mA per IO pin, how can it control a system with several lights, actuators, pumps, etc? What ...
dubious's user avatar
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The new RP2350 IC seems to come with 5V tolerant inputs if IOVDD is at 3.3V according to page 1335 of datasheet https://datasheets.raspberrypi.com/rp2350/rp2350-datasheet.pdf Has anyone tried ...
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I have a Raspberry Pi Pico powered by solar panels and super capacitor. Experiment 1: Power Pico using solar. VSYS rises to 5.09V after some minutes and onboard green LED comes on as the voltage rises ...
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I have an Adafruit thumb joystick but I am getting strange results. The x value is consistently maxed out (so hovering around 65535) and the y value is doing a wave between 16000 and 49000. So I am ...
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I am working on a project that has an LN298N driver control 2 motors. I am using this video for the basics: https://www.youtube.com/watch?v=H1Fzil_VUq4&t=162s There is just one thing that confuses ...
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My teacher asked to work out a project and make an drawing of the electronics and I was wondering if any of you could help: bare in mind, I know nothing about the electrical language since we handle ...
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I'm brand new to microcontrollers so I suspect this is a simple misunderstanding of how circuits work. I have a project that reads temperature information from a DHT11 sensor and displays it on an ...
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I am trying to do a project using Raspberry Pi Pico H, that will work as a pulse oximeter. I have designed the circuit in the image (note: the exact pins on the photo might not match with the code ...
macius_o's user avatar
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I'm wondering if any of the given pins are reserved for the RP2040's function. For context I'm making a line following robot for high school competition. GPIO 0 - Start Button GPIO 1 - Debug Pin GPIO ...
Joseph Tobias's user avatar
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I have made init methods for both sensors inside of their own classes, and then I tried to combine them in the same sketch. I created a custom I2C object wire to be used with the MPU6050 to stop the ...
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I've recently been trying to do an experiment requiring me to measure light intensity. I didn't have the necessary equipment, but I did have a photoresistor and a Raspberry Pi Pico, so I tried ...
manolidisS's user avatar
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I am working on PWM control with a Raspberry Pi Pico and came across the term "Slice," for which I am unable to find a proper definition on the internet. A quick search gives "Slicing ...
Pratham's user avatar
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I want to control the amount of current going through a Triac by adjusting the firing angle accordingly. The Circuit is shown below: Let's say i want IRMS to be 0.28A then the controller need to ...
mhd Aws kamel's user avatar
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I recently acquired a 7-segment LCD, and I am having trouble to understand how to use it. Is it possible to use it with a Pico without any additional hardware? From what I know from my research, LCDs ...
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I have the following circuit taken from Arts of Electronics. I am using it to detect zero-crossing of a 40V-RMS/50Hz input. I am connecting the output of the comparator LM 393 to a GPIO pin of Raspi ...
mhd Aws kamel's user avatar
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I am designing a Access Control System based around a Pi Pico microcontroller. I took some Circuitry classes in college and I remember blowing multiple chips trying to get everything right. My ...
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I am designing a zero-crossing circuit to connect it to a RasPi Pico W input. I am using a 6N137 from Liteon. I have a problem because it takes around 200 microseconds to turn on with an input of 40V ...
mhd Aws kamel's user avatar
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My understanding is that this changes the direction of up to 5 OUT pins: out pindirs 31 In the above example, 31 would be all 5 bits set to 1, so the first 5 OUT ...
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I realise similar questions have been asked in the past about automating capacitive touches, but I'm aiming to put this into practise with a simple circuit. I want to be able to simulate / automate ...
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I am using RPi CM4 with UART for a project. This is the relevant part of /boot/config.txt: ...
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I am designing a 3-phase motor driver for a 300 W hoverboard motor with a Raspberry Pi Pico, which has 3.3 V logic, for driving the MOSFETs I am using a discrete totem pole driver on the n channel ...
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I want to debounce a button in micropython and found this page on the micropython docs: https://docs.micropython.org/en/latest/pyboard/tutorial/debounce.html It uses a library called pyb but my ...
user3553471's user avatar
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I am trying to understand properly how buttons work with the pico; I can make them work but I don't understand why it works or if it is the right approach. I get that I need to add Pin.IN when ...
user3553471's user avatar
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I'm trying to build a PWM fan controller for an industrial Noctua PWM Fan (NF-F12 IndustrialPPC 3000 PWM). You'll find the schematic below. The fan is powered by a 12 VDC power supply (...
Leandros's user avatar
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The title asks my question; how can I find the matrix layout of an old EEPC keyboard. I found an instructables about making a USB keyboard controller but it uses a Teensy microcontroller, and I think ...
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I am planning on making a soil moisture sensor with a capacitive sensor, Thonny ide, micropython, and a raspberry pi pico w, and I followed some online tutorials as I am relatively new to the world of ...
user390652's user avatar
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I'm looking for a circuit suggestion to drive a 5v resistive load that draws up to 400mA using a Raspberry Pi Pico with a high-side switching circuit. Most every example I could find used an external ...
MagicSmoke's user avatar
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I am trying to use a Pololu DRV8833 driver to drive a DC motor via a pico. Below is the setup ...
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To begin with: I have almost zero electrical/electronic knowledge. I want to have something like two-way analog signal converter. On one side there is 0V-15V and on the other there is 0V-3.3V. The ...
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