ESP12 Break Out

2 layer board of 2.35x1.60 inches (59.72x40.67 mm).
Shared on March 16th, 2017 22:15.

break out board, my first PCB https://github.com/Thijxx/ESP12Board

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base v2.41.brd

2 layer board of 1.66x1.22 inches (42.04x31.06 mm).
Shared on March 16th, 2017 18:23.

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2 layer board of 1.05x0.71 inches (26.62x18.11 mm).
Shared on March 16th, 2017 18:23.

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2 layer board of 1.82x1.82 inches (46.20x46.20 mm).
Shared on March 16th, 2017 12:25.

Intended for the current generation of cheap SRKs where the thermal design is not great. Maximum current can be selected up to 6 A by populating the corresponding number and type of 7135 regulators.
Dual channel (15+1 7135)
No OTC - Intended for memory-decay or no-memory firmware.
R5 to eliminate unintentional Vcc boosting during PWM.
Cell voltage read upstream of D1.
Oversized ground ring with good thermal connection to the 7135s.
Full size SOT-89 electrical pads for the 7135s.
Generous 0603 pad sizes that will accept 0805 parts as well.
Accepts Tiny13A-85 package size for MCU.

U1: Atmel Attiny25, SSU or SSN package
U2-17: 7135 350 mA LED driver
C1, C3: 10 uF, X5R or better, 0603 or 0805 (C3 is optional)
C2: 0.1 uF, X7R, 0603
D1: Schottky diode, 200 mA 20 V or better, 0805 or SOD323
R1: 300 kohm, 1%, 0603
R2: 100 kohm, 1%, 0603
R5: 4.7 ohm, 5%, 0603
R6: 330 ohm, 5%, 0603 (optional, to drive an indicator LED from MCU pin 3)
R7: 330 ohm, 5%, 0603 (optional, to drive an indicator LED from MCU pin 7, do not populate R1, R2 if doing this)
R8: 330 ohm, 5%, 0603 (this one is just a jumper,1R - 10k will work)