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Enlightened-Otter

Jana-Marie·Enlightened-Otter·HW/V2.1/main.kicad_pcb

Enlightened-Otter PCB layout, top view — open source ESP8266 board by Jana-Marie
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About the Enlightened-Otter PCB

Enlightened-Otter is an open source ESP8266 PCB design by Jana-Marie, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 100 × 100 mm, with 171 components from 50 distinct parts.

Its main chip is the ESP8266EX, from the ESP8266 family. Other key parts include the RT9466, MIC4416, STM32F334, MIC5501-3.0V and BY25Q64ASSIG. By type, the board carries 59 capacitors, 58 resistors, 10 diodes, 9 ICs, 9 LEDs and 5 inductors.

It belongs with the power & battery designs in this gallery.

From the project

Enlighted-Otter is an Open-Source and OSHW work-light for hacker/maker events like the chaos communication congress, which can be screwed onto a club mate bottle.

Everything can be assembled as per manufacturer except for the following parts.

- LED1,LED2,LED3 are per BOM sidemounted LEDs but they have to be rotated by 90 degrees and treated as reverse mount leds. - The studs cannot stand by themselfes, thus they have to be supported while reflowing - D7,D8 are normal 0805 LEDs but also reverse mounted

- After reflowing the batteries can be inserted, EO should boot up and the middle led should light up. EO can now be flashed via Tag-connect - before adding the LED pcb it is mandatory to turn off EO! - Insulating washers (TO220 isolators) have to be…

Enlightened-Otter, from the project README
From the project README

Main components on the Enlightened-Otter

RT9466MIC4416STM32F334MIC5501-3.0VBY25Q64ASSIGMCP6L2T-E/MSESP8266EXBS801B

Enlightened-Otter bill of materials (BOM)

171 components, 50 distinct parts.

QtyPartRefs
1
RT9466
IC1
2
MIC4416
IC2, IC3
1
STM32F334
U1
1
MIC5501-3.0V
U2
1
BY25Q64ASSIG
U3
1
MCP6L2T-E/MS
U4
1
ESP8266EX
U5
1
BS801B
U6
2
FDN360P
Q1, Q4
2
NTMS4816NR2G
Q2, Q3
1
USB-C
J4
2
254
254_1, 254_2
1
ESP-ANTENNA
ANT1
6
M3 Screw
AnodeC1, AnodeW1, KathodeC1, KathodeW1, gnd1, ntc1
1
LOGO
G1
1
DNP
NTC1
2
10k
RT1, RT2
1
Panasonic_EVQPUL_EVQPUC
T2
2
6.00MHz
XT1, XT2
6
SK6812
LED1, LED2, LED3, LED4, LED5, LED9
Show 30 more
QtyPartRefs
3
LED 1206
LED6, LED7, LED8
2
D_Schottky
D1, D3
5
D
D2, D4, D5, D6, D10
2
Red
D7, D8
1
Red
D9
2
Ferret
FB1, FB2
1
4.7u
L1
2
4.7u 3.5A
L2, L3
24
100n 50V
C1, C2, C4, C5, C6, C13, C16, C25 +16
3
1u 25v
C3, C7, C8
6
18p 50V
C9, C10, C12, C39, C44, C59
2
47n
C11, C15
15
10u 25V
C14, C17, C19, C20, C21, C22, C23, C24 +7
1
47nF 16V
C18
4
4.7u 50V
C28, C29, C35, C36
3
10n 50V
C40, C41, C42
1
DNP
C46
5
5.1k
R1, R2, R26, R30, R50
9
28k
R3, R4, R5, R6, R7, R8, R9, R10 +1
8
12k
R12, R14, R15, R16, R48, R49, R52, R53
6
10k
R13, R17, R19, R20, R22, R56
7
47k
R18, R21, R37, R40, R43, R57, R58
6
1k
R23, R24, R25, R41, R42, R51
2
1.5k
R27, R28
1
300
R29
2
0
R31, R34
6
220k
R32, R33, R36, R39, R44, R45
2
6.2
R35, R38
2
220m
R46, R47
2
0
R54, R55

Enlightened-Otter design files

The KiCad project lives in the Jana-Marie/Enlightened-Otter repository on GitHub; these links point at the commit this page was built from.

Enlightened-Otter: common questions

What microcontroller does the Enlightened-Otter use?

The Enlightened-Otter is built around the ESP8266EX, from the ESP8266 family.

How big is the Enlightened-Otter PCB?

The Enlightened-Otter measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Enlightened-Otter?

171 components, from 50 distinct parts. The full bill of materials is listed on this page.

Where can I download the Enlightened-Otter design files?

From the Jana-Marie/Enlightened-Otter repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Enlightened-Otter design in my own project?

Yes, under the terms of its GPL-3.0 license, which Jana-Marie chose for the repository.

Can I test firmware for the Enlightened-Otter without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP8266 firmware against it before you order a PCB.

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