ESP8266 SMT Module - ESP-12

ESP-12 SMD Wi-Fi module based on the ESP8266, with 4 MB flash and a castellated edge for PCB mounting. Requires 3.3 V supply and external programming circuit for first-time flash.

Logical pinout · physical placement not verified

11
Type · Ground
22
Type · Power
33
Type · Signal
44
Type · Signal
55
Type · Signal
66
Type · Signal
77
Type · Signal
88
Type · Signal
99
Type · Signal
1010
Type · Signal
1111
Type · Signal
1212
Type · Signal
1313
Type · Signal
1414
Type · Signal
1515
Type · Ground
1616
Type · Power
1717
Type · Signal
1818
Type · Signal
1919
Type · Signal
2020
Type · Signal
2121
Type · Signal
2222
Type · Signal
2323
Type · Signal
2424
Type · Signal

Pin	Position	Type
1	1	Ground
2	2	Power
3	3	Signal
4	4	Signal
5	5	Signal
6	6	Signal
7	7	Signal
8	8	Signal
9	9	Signal
10	10	Signal
11	11	Signal
12	12	Signal
13	13	Signal
14	14	Signal
15	15	Ground
16	16	Power
17	17	Signal
18	18	Signal
19	19	Signal
20	20	Signal
21	21	Signal
22	22	Signal
23	23	Signal
24	24	Signal

Logical pinout · physical placement not verified

Pin details

24 connections

1
Ground
1
2
Power
2
3
Signal
3
4
Signal
4
5
Signal
5
6
Signal
6
7
Signal
7
8
Signal
8
9
Signal
9
10
Signal
10
11
Signal
11
12
Signal
12
13
Signal
13
14
Signal
14
15
Ground
15
16
Power
16
17
Signal
17
18
Signal
18
19
Signal
19
20
Signal
20
21
Signal
21
22
Signal
22
23
Signal
23
24
Signal
24

Start wiring

USB · 3.3 V

Verify supply voltage and logic levels before powering up.

Module pins: 2, 16, 1, 15, 3, 4, 5, 6. Schematik maps them to your board in the app.

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