#Raspberrypi — ELECROW - FORUM

How to replace/disable Elecrow splash screen on CrowPanel CM4?

jcz0824 — Fri, 20 Mar 2026 22:24:08 +0000

How do you disable/replace the elecrow logo splash screen on the CrowPanel CM4 ? I would like to replace this image with a custom graphic. Thank you

For Hackberry PI, which Raspberry PI CM5 model?

planodad — Sun, 08 Mar 2026 17:28:08 +0000

Hi,

Is there a specific model you recommend? I know you’ve said CM5 Lite, but is that model SC1560?

Thanks,

Can the nvme and Lorawan co exist on new pi terminal

kdodds98 — Fri, 04 Oct 2024 12:48:37 +0000

Can you get an adapter which allows the Lora module and the nvme ssd to work together on the new pi terminal touch screen

How to Use Pico to Make Electronic hourglass --- RaspberryPiPico Kit

Elecrow — Thu, 01 Sep 2022 02:42:28 +0000

Project Introduction:

Turn the encoder to set the time, and it will be displayed on the TM1637 4-Bits digital tube in real time. Press the button and the electronic hourglass starts working.

Material preparation:

Raspberry Pi Pico*1, USB Cable*1, Breadboard*1, Encoder*1, TM1637 4-Bits Digital Tube*1, Dupont line

Circuit connection:

Library file installation:

Upload the "tm1637.py" library file to the Raspberry Pi Pico. Step1: Download tm1637.zip, unzip the file and copy tm1637.py to library folder. Step2: Connect the Pico to Thonny with a USB cable; Step3: Find the "tm1637.py" library in the file window; Step4: Right-click and select "Upload to / " to start uploading the library file; Step5: "tm1637.py" appears at bottom left, indicating that the upload is successful, and you can start running the program.

Program analysis: Electronic Hourglass


from machine import Pin
from time import sleep
import tm1637

tm = tm1637.TM1637(clk=Pin(4), dio=Pin(5))
RoA_Pin = 0               # CLK
RoB_Pin = 1               # DT
Btn_Pin = 2                # SW

globalCounter = 0          # counter value
flag = 0                   # Whether the rotation flag occurs
Last_RoB_Status = 0       # DT state
Current_RoB_Status = 0    # CLK state

def setup():
    global clk_RoA
    global dt_RoB
    global sw_BtN
    
    clk_RoA =  Pin(RoA_Pin,Pin.IN)           
    dt_RoB = Pin(RoB_Pin,Pin.IN)              
    sw_BtN = Pin(Btn_Pin,Pin.IN, Pin.PULL_UP) 
    # Initialize the interrupt function, when the SW pin is 0, the interrupt is enabled
    sw_BtN.irq(trigger=Pin.IRQ_FALLING,handler=btnISR)

# Rotation code direction bit judgment function
def rotaryDeal():
    global flag                   
    global Last_RoB_Status
    global Current_RoB_Status
    global globalCounter         

    Last_RoB_Status = dt_RoB.value()   
    # Judging the level change of the CLK pin to distinguish the direction
    while(not clk_RoA.value()):       
        Current_RoB_Status = dt_RoB.value() 
        flag = 1                    # Rotation mark occurs
    if flag == 1:                     # The flag bit is 1 and a rotation has occurred
        flag = 0                     # Reset flag bit
        if (Last_RoB_Status == 0) and (Current_RoB_Status == 1):
            globalCounter = globalCounter + 1    # counterclockwise, positive
        if (Last_RoB_Status == 1) and (Current_RoB_Status == 0):
            globalCounter = globalCounter - 1     # Clockwise, negative

# Interrupt function, when the SW pin is 0, the interrupt is enabled
def btnISR(chn):
    global globalCounter
    globalCounter = 0 
    print ('globalCounter = %d' %globalCounter)
    while True:
    # Define a counter that changes every 1 second
        tm.number(globalCounter)
        globalCounter = globalCounter - 1
        sleep(1)
        if globalCounter == 0:
            break

def loop():
    global globalCounter  
    tmp = 0   
    while True:
        rotaryDeal()      
        if etmp != globalCounter:
            print ('globalCounter = %d' % globalCounter)
            tmp = globalCounter    
            tm.number(globalCounter)
            
if __name__ == '__main__':    
    setup() 
    loop()

Click link below to watch video:

https://www.youtube.com/watch?v=Sl1dVGrHXFg

Connecting a MAX4466

pgrooff — Fri, 24 Jan 2025 16:42:51 +0000

I have a Raspberry Pi starters kit and connected the PCF8591 module (lesson 15) and (I think) it works.
The pot meter is on 1 and the light is on 2.
Now I want to connect the MAX4466, a microphone module, to the raspberry pi - to input 1 of the PCF8591 (I removed the jumper).
I use the software from lesson 15, but nothing happens. I see no change when speak into the microphone.
What am I doing wrong, any suggestions?

CRV00117L - CrowVision 7 inch LCD tactile touch is not working [Solved]

asis — Tue, 17 Dec 2024 16:57:54 +0000

Hello, I have just receive a CrowVision 7 Inch Touch Screen Capacitive Portable 1024*600 IPS LCD Monitor Rear Fixing for Raspberry Pi but works with a Raspberry Pi 3B from 2015. The problem is the tactile is not working. In my Pi there is not a USB-C for the tactila so, I put a mini usb cable but.... tactile is not working

CrowPi-L 64bit image

Elecrow — Mon, 12 Jun 2023 06:40:51 +0000

Great news! The 64-bit image for the CrowPi L learning platform is now available for download.

And here's the download link:

https://drive.google.com/drive/folders/1htg37I2d91N6qGHDWVHaB5AXTnOuXJd8?usp=sharing

New Raspberry Pi OS: Bookworm

SpareSimian — Thu, 12 Oct 2023 04:11:01 +0000

Has anyone attempted to run Bookworm on the Crowpi2? I'm running Bullseye x64 on mine without issue, after adding the needed HDMI config to the boot config file. Is anything else needed to make Bookworm work?

Details about the new OS: https://www.raspberrypi.com/news/bookworm-the-new-version-of-raspberry-pi-os/

Where I can download the CrowPi image compatible with Raspberry Pi5?

Elecrow — Wed, 12 Jun 2024 04:31:51 +0000

2024-5-9 Updated download link: https://drive.google.com/drive/u/0/folders/1omz8i4UVU-chItRekNViZEYqbhsLtCnn

How to flash the image to the SD card?

Step1: Insert the SD card into your computer. Use sd formatter to format your SD card.

Step2: Use the image burning tool to burn the image file to your SD card.

For the image burning tool, you can choose balenaEtcher, Win32DiskImager or Raspberry Pi Imager.
Take Raspberry Pi Imager as an example, select use custom in os, select the image file you just downloaded, and then select your SD card. Click next and confirm.

Step3: After the image is burned to the SD card, insert the SD card to Raspberry Pi5 and turn on CrowPi. You will see there's a folder name "CrowPi" on the Desktop.

Step4: Run cd Desktop/CrowPi/Examples to enter the course folder , and then run sudo python buzzer.py (or other programs) to run the course code.

CrowPi1 FAQs

tony — Sat, 17 Apr 2021 08:50:00 +0000

Image problems

1.Where can I download the CrowPi1 latest image?

2.Where can I download image for Crowpi which compatible with 8G respberry pi 4B?

3.Where I can download the CrowPi image compatible with Raspberry Pi5?

Lessons problems

1.Where can I download the CrowPi1 lessons?

Software problems

1.How to install all the dependency packages needed by the CrowPi1 image base on standard RasberryOS?

2.How To Set CrowPi Lock Screen

3.Install the GParted tool to resize the CrowPi partition

4.When you try to update any apps, it would say it does not have enough storage.

Hardware problems

1.How can I know all the information of CrowPi1 on-board modules?

2.How to disassembly the CrowPi?

3.Is CrowPi compatible with Raspberry Pi 4?