[Python] How to send a 200×200 1bit image to a lilygo wrist-e-paper through python [closed]

How do I send an image (200×200) to a wrist-e-paper from lilygo?

I've been playing around with the WiFiSendTest example and this is working, but I manually need to select an image and manually send it. I want to take these steps to a python script which does the work. It will need to display a QR code which I automatically create through a different python script.

I've already got this code:

import requests
from PIL import Image
import numpy as np

# Device IP Address
DEVICE_IP = "10.13.100.100"
UPLOAD_URL = f"http://{DEVICE_IP}/"
SHOW_URL = f"http://{DEVICE_IP}/SHOW_"

# Convert image to 1-bit array (packed bit array)
def convert_image(image_path):
img = Image.open(image_path).convert("1") # Convert to 1-bit monochrome
img = img.resize((200, 200)) # Ensure size is correct
img_data = np.array(img, dtype=np.uint8) # Convert to NumPy array
img_data = np.packbits(img_data) # Pack bits into bytes
return img_data

# Encode the image data to a custom format (no base64, just raw packed bits)
def encode_image_data(img_data):
encoded_data = "".join(chr(byte) for byte in img_data)
return encoded_data

# Upload the image to the device
def upload_image(image_path):
img_data = convert_image(image_path)
encoded_data = encode_image_data(img_data)

# Send the encoded data
response = requests.post(UPLOAD_URL + encoded_data + "LOAD_", headers={"Content-Type": "text/plain"})

print("Upload Response:", response.status_code, response.text)

# Send the SHOW command to refresh the display
show_response = requests.post(SHOW_URL)
print("Show Response:", show_response.status_code, show_response.text)

# Run the script
if __name__ == "__main__":
# Example image path
image_path = "BarCode.bmp"
upload_image(image_path)


This script is timing out.

In the meantime, I also tried this:

import requests
from PIL import Image
import numpy as np
import base64

# Device IP Address
DEVICE_IP = "10.13.100.100"
UPLOAD_URL = f"http://{DEVICE_IP}/"
SHOW_URL = f"http://{DEVICE_IP}/SHOW_"

# Convert image to 1-bit array
def convert_image(image_path):
img = Image.open(image_path).convert("1") # Convert to 1-bit monochrome
img = img.resize((200, 200)) # Ensure size is correct
img_data = np.array(img, dtype=np.uint8) # Convert to NumPy array
img_data = np.packbits(img_data) # Pack bits into bytes
return img_data

# Encode the image for transmission
def encode_image_data(img_data):
encoded_data = ""
for byte in img_data:
encoded_data += chr((byte & 0xF) + 97) # Convert to ASCII character encoding
encoded_data += chr(((byte >> 4) & 0xF) + 97)

return encoded_data

# Upload the image to the device
def upload_image(image_path):
img_data = convert_image(image_path)
encoded_data = encode_image_data(img_data)

# Send the encoded data
response = requests.post(UPLOAD_URL + encoded_data + "LOAD_", headers={"Content-Type": "text/plain"})
print("Upload Response:", response.status_code, response.text)

# Send the SHOW command to refresh the display
show_response = requests.post(SHOW_URL)
print("Show Response:", show_response.status_code, show_response.text)

# Run the script
if __name__ == "__main__":
image_path = "BarCode.png"
upload_image(image_path)


This is sending something, but the e-paper goes "white" instead of showing the QR code.

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