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2 years ago 472
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I got sick of wiring up ESP-12 on the simple breakout boards to external devices where you needed extra VCC and GND connections. The nodeMcu version have the built in serial and regulator that are not much good for low power.

So this is my alternative, focused around I2C and mainline I/O with VCC and GND close by, as well as options for configuring the reset pin, for wake up and external





ID Name Designator Footprint Quantity Manufacturer Part Manufacturer Supplier Supplier Part Price LCSC Assembly Mounted LCSC SeeedStudio
1 HT7333-A U1 SOT-89 1 HT7333-A HOLTEK LCSC C21583
2 100uf C1 ELECTCAPA 1
3 ESP8266-12F U2 LGA22-2.0-24X16MM 1 ESP8266-12E/ESP-12E SeeedStudio 317060015
4 IN J1 M1X2 1
5 JUMPER-2 JP1 1X02 1
6 Serial J7 CON3 1
7 Prog J8 CON3 1
8 10k R3,R1,R2,R5 R3 4
9 100nf C2 C1 1
10 10u C3 C1 1
11 I2C J6,J5,J4,J3,J2 CON4 5
12 IO J9 CON3 1
13 10k.. R4 R3 1
14 Reset J10 HDR-2X1/2.54 1 Header-Male-2.54_1x2 EasyEDA LCSC C36717
15 VCC P1 HDR-3X1/2.54 1 Header-Male-2.54_1x3 EasyEDA LCSC C49257
16 GND P2 HDR-3X1/2.54 1 Header-Male-2.54_1x3 EasyEDA LCSC C49257




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