Projects — ELECROW - FORUM

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

RC050S Fan Connector

Hyperion0 — Wed, 27 Nov 2024 13:50:04 +0000

I need to replace the fan for my RC050S, but I can't find any information about what the fan size is or anything.
Strictly speaking the fan still works, if I can get the correct size jumper for the board, but again I can't find any information on the fan or what size jumper I would need to reconnect it.
Does anyone have any info or details?

Changing Language for Python and Scratch Lessons on CrowPi2

BlankiWRLD — Mon, 30 Sep 2024 11:44:57 +0000

Hi everyone,

I was wondering if there’s an option to change the language for the Python and Scratch lessons on CrowPi2. Is there a specific location where I can modify the files myself to add or translate lessons into a different language? Any guidance or tips would be greatly appreciated!

Thanks in advance for your help!

No response from AT commands on Leonardo GPRS GSM IOT Board-V1.2

Conan — Wed, 19 Jun 2024 10:38:22 +0000

Hello everyone! I have a problem: every AT command I execute does not give me any response. Maybe I should update firmware? If yes, how I can update that? (I have found no information on official site of Elecrow)

code:
`#define DEBUG 1

define CHECK Serial.println("✓");

void setup()
{
//GSM.begin(9600);
Serial.begin(11520);
Serial1.begin(11520);
while(!Serial);
Serial.println(" -- Program start -- ");
Serial.println("Serial initialization... ✓");
Serial.print("Serial1 initialization... ");
while(!Serial1.availableForWrite());
CHECK
Serial.println("AT commands initialization... ");
sendData("AT",2000);
delay(3000);
Serial.println("HTTP initialization... ");
sendData("AT+HTTPINIT",2000);
Serial.println("HTTP parameters setting... ");
sendData("AT+HTTPPARA=\"CID\", 1",2000);
sendData("AT+HTTPPARA=\"URL\", \"http://www.iforce2d.net/test.php/\"",2000);
sendData("AT+HTTPPARA?",2000);

Serial.println(" -- Get start -- ");
sendData("AT+HTTPACTION=0",2000);
sendData("AT+HTTPACTION=0",2000);
sendData("AT+HTTPACTION=0",2000);
}

void loop() {

}

void sendData(String command, const int timeout) //Send command function
{
String response = "";
Serial1.println(command);
long int time = millis();
while( (time+timeout) > millis()){
while(Serial1.available()){
response += (char)Serial1.read();
}
}
if(DEBUG){
Serial.println();
Serial.print(response);
CHECK
Serial.println();
}
}`

Result:
https://drive.google.com/file/d/11NSHc2rh2g88NbX3J7AfxqycwbjimwdP/view?usp=sharing

I2C port on 7" hmi elecrow esp32 display

the_forgeron — Tue, 23 Apr 2024 12:49:46 +0000

so this is the reference of the product:
7"hmi elecrow display: https://wiki.elecrow.com/index.php?title=Wizee-ESP32_7.0''_Intelligent_Touch_Screen_Wi-Fi&BLE_800*480_HMI_Display
datasheet: https://www.espressif.com/sites/default/files/documentation/esp32-s3-wroom-1_wroom-1u_datasheet_en.pdf
chip of the model: ESP32-S3-WROOM-1-N4R2
picture of the screen: https://drive.google.com/file/d/1eXFTtBIQK_FXhMClNBrtX-EPmpdgcZ1q/view?usp=sharing
so i just realise that there are no I2C port on this model, i want to use the hmi to connect mpu6050 (accelerometer) and show vibration curv.
how do i manage to connect my I2C divices?. what is the i2c pin on this model?
is there another way to connect the sensors??
im ok with doing modification the display, i dont want to buy a new one.
thanks for future answer!

Project reading the input of vibration sensor

the_forgeron — Fri, 08 Mar 2024 13:56:36 +0000

so guys my projeect is to read a data from a mpu6050 vibration sensore. and i dont know where to start. i plan to use a 7 inch hmi esp32 screen as a screen, where the signal is shown.
i did a little introduction to squarreline software but i dontt know how to put it all tohgether.
i wqnt to have a chart on the screen that show the vibration in a sinusoidal form.
thank you very much

Minecraft Course Selections Blank

jaedon — Fri, 17 Feb 2023 05:40:07 +0000

When I (or my daughter) click on any one of the 16 minecraft course selections, that section of the window in the interface goes blank white/beige. It is as if part of the window isn't opening properly. The border is still green and the back and exit buttons still operate. There's just no instruction. What is the source of the error? Any help is greatly appreciated.

Thank you, Jaedon

Arduino Automatic Smart Plant Watering Kit 2.1 - Pump throttling

Plantinator — Mon, 20 Feb 2023 01:02:04 +0000

Hello,

A few weeks ago I bought this kit to water my plants when I'm not home for long periods. Today I primed the system and I noticed that the pump's flow is rather strong for my needs. In particular, I have two small pots (without holes on the bottom, unfortunately) and if any of these were to be watered alone (as I expect to be the majority of the cases), the flow would overshoot the pot rather easily.

Is there any way to limit the pump's flow? From the code, the pump is activated from a digital port as a simple on/off; maybe I could change that to analog and find a cutoff value to activate the pump at lower speed? I also considered choking the necessary outputs, but I am afraid this would damage the pump on the long run, despite being a rather sloppy solution.

Thanks for the support!

Wizee HMI Display Resources

Elecrow — Tue, 22 Nov 2022 10:12:49 +0000

Project demo
Instruction Set

How to DIY Fingerprint Lock Box

Eleanor — Fri, 02 Sep 2022 09:16:33 +0000

Project Introduction:

After inputting the fingerprint lock off signal, the steering gear rotates 90 °, and the rocker arm intersects with the U-shaped plastic, so that the box cannot be opened. After pressing the fingerprint scanner again, the steering gear rotates 90 ° in the opposite direction, and the rocker arm is parallel with the U-shaped plastic, so that the box can be opened.

Material preparation:

Fingerprint scanner*1 Servo*1 Crowduino*1(or Arduino)*1 Base shield for Crowduino*1 U-shaped plastic*1 Box*1 Cables

Circuit connection:

Pinmap of fingerprint scanner:

Operation steps:

Step1. Paste the steering gear in the box, mark the appropriate position of the U-shaped material, and then stick the U-shaped plastic on the box cover. Step2. Mark the location of crowduino, cut out the hole of USB interface, and then stick crowduino in the box. Step3. Paste the square fingerprint scanner and cut the box cover. Step4. Connect the cables according to the wiring table. Step5. Connect Crowduino and the computer with USB cable, upload the program to Crowduino, and enroll the fingerprint Step6. Start using!