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USB Programming Adaptor for ESP8266

from the Espressif family, I’d like the ESP-01 and ESP-012

USB Programming Adaptor for ESP8266
This project lets you program ESP-01 and ESP-012 type ESP8266 modules via an FTDI USB interface. An additional connector makes it possible to talk to any other module in the ESP8266 family, using flying leads.This project is very handy, particularly when developing on breadboard or for quick prototyping, as it lets you dispense with switches or jumpers for enabling the programming mode. A simple cable with an FTDI USB–TTL converter lets you power the circuit and transmit the code.
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Component list
Component List
R1 = 220Ohm, thick film, 5%, 0.1W, 150V, SMD 0805
C1,C3,C5 = 100nF, 50V, X7R, SMD 0805
C2 = 10µF 16V, radial, SMD, Panasonic type EEEFK1C100R
C4 = 100µF 16V, radial, SMD, Panasonic type EEEFK1C101P
D1 = LL4001G diode, 50V, 1A
IC1 = LM3940, 3.3V, low-dropout regulator
LED1 = green, 3mm
K1 = snap-off pinheader, 1×6 contacts, horizontal, 0.1" pitch
K2 = snap-off female connector, 1×6 contacts, vertical, 0.1" pitch
S1 = SPDT slide switch, through-hole, 500mA (EOZ 1K2 series)
MOD1 = 2× female connector for ESP-012, snap-off, 1×8 contacts, vertical
MOD2 = 1× female connector for ESP-01, snap-off, 1×8 contacts, vertical
1 FTDI TTL-232R-5V converter cable, 1.8m
PCB # 160490-1
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