DCF77 Emulator with ESP8266
Replace over-air time by Internet time
Gerber file
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Extra info / Update
* Internet connected
* Replaces DCF77 receiver modules
* ESP8266-based
Component list
150713-1: bare DCF77 emulator PCB
150445-91: ESP-01 module
Component List
Resistors
All 0805, 5%, 0.1 W
R1 = 220Ohm
R2 = 47kOhm
R3,R4,R5 = 3.3kOhm
Capacitors
All 0805
C1 = 470nF
C2 = 100µF, 16V, radial can SMD, 6.3mm diameter
C3 = 100nF
Semiconductors
IC1 = LM3940IMP-3.3/NOPB
LED1 = LED, red, 0805
T1 = BC847C
Miscellaneous
JP1 = 2-pin pinheader, 0.1” pitch
Jumper, 2-way, 0.1” pitch
K1 = 6-pin pinheader, 0.1” pitch
K2 = 3-pin pinheader, 0.1” pitch
MOD1 = ESP-01 Wi-Fi module
MOD2 = 8-way (2x4) pinheader socket, 0.1” pitch
PCB 150713-1 v1.0
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