[Solved] You wrote this code to display 'Hello' on the OLED but nothing appears: oled.text('Hello', 10, 10) oled.fill(0) oled.show() What is the problem? | Raspberry Pi

Raspberry Pi - Display and Output

You wrote this code to display 'Hello' on the OLED but nothing appears:

oled.text('Hello', 10, 10)
oled.fill(0)
oled.show()

What is the problem?

ACoordinates (10,10) are outside the display range

BCalling fill(0) after text() clears the buffer

CMissing oled.init() before drawing

DText string must be uppercase

Step-by-Step Solution

Solution:

Step 1: Check the order of commands
Text is drawn first, then fill(0) clears the buffer, erasing the text.
Step 2: Understand correct sequence
Clear buffer first with fill(0), then draw text, then call show().
Final Answer:
Calling fill(0) after text() clears the buffer -> Option B
Quick Check:
Clear after draw erases text [OK]

Quick Trick: Clear buffer before drawing, not after [OK]

Common Mistakes:

MISTAKES

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