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Breadboard 400 pin
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Breadboard 400 pin

A 400-point solderless breadboard used to build and test electronic circuits quickly without soldering. It provides multiple rows of spring contact holes for wiring components together using jumper leads, including dedicated connection areas for power rails and grouped row/column connections. Commonly used in Arduino and ESP32 learning setups for rapid prototyping and experimentation.

Width: 89.6 mm

Pinout — Breadboard 400 pin

Pin Signal Description
J1
J2
J3
J4
J5
J6
J7
J8
J9
J10
J11
J12
J13
J14
J15
J16
J17
J18
J19
J20
J21
J22
J23
J24
J25
J26
J27
J28
J29
J30
I1
I2
I3
I4
I5
I6
I7
I8
I9
I10
I11
I12
I13
I14
I15
I16
I17
I18
I19
I20
I21
I22
I23
I24
I25
I26
I27
I28
I29
I30
H1
H2
H3
H4
H5
H6
H7
H8
H9
H10
H11
H12
H13
H14
H15
H16
H17
H18
H19
H20
H21
H22
H23
H24
H25
H26
H27
H28
H29
H30
G1
G2
G3
G4
G5
G6
G7
G8
G9
G10
G11
G12
G13
G14
G15
G16
G17
G18
G19
G20
G21
G22
G23
G24
G25
G26
G27
G28
G29
G30
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
F11
F12
F13
F14
F15
F16
F17
F18
F19
F20
F21
F22
F23
F24
F25
F26
F27
F28
F29
F30
E1
E2
E3
E4
E5
E6
E7
E8
E9
E10
E11
E12
E13
E14
E15
E16
E17
E18
E19
E20
E21
E22
E23
E24
E25
E26
E27
E28
E29
E30
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
D16
D17
D18
D19
D20
D21
D22
D23
D24
D25
D26
D27
D28
D29
D30
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
C26
C27
C28
C29
C30
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
GND1.1 ground GND power rail
GND1.2 ground GND power rail
GND1.3 ground GND power rail
GND1.4 ground GND power rail
GND1.5 ground GND power rail
GND1.6 ground GND power rail
GND1.7 ground GND power rail
GND1.8 ground GND power rail
GND1.9 ground GND power rail
GND1.10 ground GND power rail
GND1.11 ground GND power rail
GND1.12 ground GND power rail
GND1.13 ground GND power rail
GND1.14 ground GND power rail
GND1.15 ground GND power rail
GND1.16 ground GND power rail
GND1.17 ground GND power rail
GND1.18 ground GND power rail
GND1.19 ground GND power rail
GND1.20 ground GND power rail
GND1.21 ground GND power rail
GND1.22 ground GND power rail
GND1.23 ground GND power rail
GND1.24 ground GND power rail
GND1.25 ground GND power rail
+1.1 power Positive power rail
+1.2 power Positive power rail
+1.3 power Positive power rail
+1.4 power Positive power rail
+1.5 power Positive power rail
+1.6 power Positive power rail
+1.7 power Positive power rail
+1.8 power Positive power rail
+1.9 power Positive power rail
+1.10 power Positive power rail
+1.11 power Positive power rail
+1.12 power Positive power rail
+1.13 power Positive power rail
+1.14 power Positive power rail
+1.15 power Positive power rail
+1.16 power Positive power rail
+1.17 power Positive power rail
+1.18 power Positive power rail
+1.19 power Positive power rail
+1.20 power Positive power rail
+1.21 power Positive power rail
+1.22 power Positive power rail
+1.23 power Positive power rail
+1.24 power Positive power rail
+1.25 power Positive power rail
GND2.1 ground GND power rail
GND2.2 ground GND power rail
GND2.3 ground GND power rail
GND2.4 ground GND power rail
GND2.5 ground GND power rail
GND2.6 ground GND power rail
GND2.7 ground GND power rail
GND2.8 ground GND power rail
GND2.9 ground GND power rail
GND2.10 ground GND power rail
GND2.11 ground GND power rail
GND2.12 ground GND power rail
GND2.13 ground GND power rail
GND2.14 ground GND power rail
GND2.15 ground GND power rail
GND2.16 ground GND power rail
GND2.17 ground GND power rail
GND2.18 ground GND power rail
GND2.19 ground GND power rail
GND2.20 ground GND power rail
GND2.21 ground GND power rail
GND2.22 ground GND power rail
GND2.23 ground GND power rail
GND2.24 ground GND power rail
GND2.25 ground GND power rail
+2.1 power Positive power rail
+2.2 power Positive power rail
+2.3 power Positive power rail
+2.4 power Positive power rail
+2.5 power Positive power rail
+2.6 power Positive power rail
+2.7 power Positive power rail
+2.8 power Positive power rail
+2.9 power Positive power rail
+2.10 power Positive power rail
+2.11 power Positive power rail
+2.12 power Positive power rail
+2.13 power Positive power rail
+2.14 power Positive power rail
+2.15 power Positive power rail
+2.16 power Positive power rail
+2.17 power Positive power rail
+2.18 power Positive power rail
+2.19 power Positive power rail
+2.20 power Positive power rail
+2.21 power Positive power rail
+2.22 power Positive power rail
+2.23 power Positive power rail
+2.24 power Positive power rail
+2.25 power Positive power rail

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