Answer: Binary Secret #346

The secret message is:

Hooray!

Row by row

Row	Bulbs	Add the ‘on’ numbers	Character
1	01001000	64 + 8 = 72	H
2	01101111	64 + 32 + 8 + 4 + 2 + 1 = 111	o
3	01101111	64 + 32 + 8 + 4 + 2 + 1 = 111	o
4	01110010	64 + 32 + 16 + 2 = 114	r
5	01100001	64 + 32 + 1 = 97	a
6	01111001	64 + 32 + 16 + 8 + 1 = 121	y
7	00100001	32 + 1 = 33	!

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 = [
    "01001000",
    "01101111",
    "01101111",
    "01110010",
    "01100001",
    "01111001",
    "00100001",
]
message = ""
for code in secret:
    number = int(code, 2)
    message = message + chr(number)
print(message)

When you run it, it prints:

Hooray!