Questions tagged [raspberry-pi-pico]
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.
133 questions
2
votes
2
answers
242
views
LCD Display Corruption on Raspberry Pi Pico (MicroPython) - Lines Overwriting Each Other
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 ...
- 161
1
vote
0
answers
111
views
nRF24L01+ Communication Issues
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 <...
- 89
5
votes
2
answers
759
views
Baking a Raspberry Pi Pico W before reflow soldering?
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 ...
- 103
0
votes
0
answers
56
views
Pocket device grounding issues - WiFi and static electricity
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 ...
- 199
0
votes
0
answers
54
views
HC12 UART communication suddenly stopped working
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 ...
- 349
1
vote
2
answers
75
views
Using a MDDRC10 driver with a Raspberry Pi Pico
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 ...
- 349
1
vote
2
answers
259
views
Multiple Buck Converters kills dead Pi Pico?
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 ...
- 139
0
votes
0
answers
75
views
Pico scanvideo library and driving ILI9488 DPI display with VSYNC HSYNC PCLK and 16-bit RGB
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 ...
- 113
1
vote
0
answers
57
views
Pi Pico GPIO1 transition very long compared to GPIO0
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 ...
- 411
0
votes
0
answers
53
views
nRF24L01+ Hardware not responding with pico
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:
...
- 349
0
votes
0
answers
59
views
Circuit design for TPL9202 8 Channel low side relay driver
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 ...
- 21
0
votes
0
answers
84
views
Voltage reading always high RP2040
Basically I have a connection like this.
My processor is a rp2040.
And when I tried to read the voltage like this:
...
- 61
2
votes
1
answer
184
views
Integration of AC-DC Power Module on PCB
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, ...
0
votes
0
answers
53
views
DS1302 RTC chip stops on battery power
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 ...
1
vote
1
answer
138
views
Understanding power and current limits in circuits
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 ...
- 147