Answer: Binary Secret #209

The secret message is:

PIXEL

Row by row

Row	Bulbs	Add the ‘on’ numbers	Character
1	01010000	64 + 16 = 80	P
2	01001001	64 + 8 + 1 = 73	I
3	01011000	64 + 16 + 8 = 88	X
4	01000101	64 + 4 + 1 = 69	E
5	01001100	64 + 8 + 4 = 76	L

Crack it with Python

Python can do the adding for you. int(code, 2) reads a string of 1s and 0s as a binary number. Then chr() turns the number into its character.

secret = [
    "01010000",
    "01001001",
    "01011000",
    "01000101",
    "01001100",
]
message = ""
for code in secret:
    number = int(code, 2)
    message = message + chr(number)
print(message)

When you run it, it prints:

PIXEL