Answer: Binary Secret #351

The secret message is:

Robot hug

Row by row

Row	Bulbs	Add the ‘on’ numbers	Character
1	01010010	64 + 16 + 2 = 82	R
2	01101111	64 + 32 + 8 + 4 + 2 + 1 = 111	o
3	01100010	64 + 32 + 2 = 98	b
4	01101111	64 + 32 + 8 + 4 + 2 + 1 = 111	o
5	01110100	64 + 32 + 16 + 4 = 116	t
6	00100000	32 = 32	a space
7	01101000	64 + 32 + 8 = 104	h
8	01110101	64 + 32 + 16 + 4 + 1 = 117	u
9	01100111	64 + 32 + 4 + 2 + 1 = 103	g

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 = [
    "01010010",
    "01101111",
    "01100010",
    "01101111",
    "01110100",
    "00100000",
    "01101000",
    "01110101",
    "01100111",
]
message = ""
for code in secret:
    number = int(code, 2)
    message = message + chr(number)
print(message)

When you run it, it prints:

Robot hug