HardLabs

Front prototype

libresmartphone·libresmartphone·Other_projects/Zerophone-PCB/front_pcb/front_prototype.kicad_pcb

Front prototype PCB layout, top view — open source ESP8266 board by libresmartphone
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About the Front prototype PCB

Front prototype is an open source ESP8266 PCB design by libresmartphone, published on GitHub. It is a 2-layer board measuring 40 × 100 mm, with 69 components from 34 distinct parts.

Its main chip is the TPS65950BZXNR, from the ESP8266 family. Other key parts include the ATMEGA328P-AU, OMAP3530DCBB and SN74AVCA406LZXYR. By type, the board carries 26 capacitors, 19 resistors, 7 connectors, 5 diodes, 4 ICs and 3 jumpers.

It belongs with the audio and displays & leds designs in this gallery.

From the project

This page contains the software used in the open hardware smartphone (libresmartphone)

This is gamma version. It's WIP and is going to be sent to production soon (as soon as last TODOs are finished). You can already order this board, but it's possible the I2C GPIO expander pin mapping is going to change. Also, before ordering, please make sure the Gerber files are recent (if they're up-to-date after latest commits concerning PCB files) and regenerate them if necessary.

Main components on the Front prototype

ATMEGA328P-AUOMAP3530DCBBTPS65950BZXNRSN74AVCA406LZXYR

Front prototype bill of materials (BOM)

69 components, 34 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ATMEGA328P-AU
IC1
1
OMAP3530DCBB
Pi Zero
Texas Instruments Inc.
U1
1
TPS65950BZXNR
ESP-12E
Texas Instruments Inc.
U2
1
SN74AVCA406LZXYR
KEYPAD_OVERLAY
Texas Instruments Inc.
U3
2
FDJ1027P
BC847B
Fairchild Semiconductor
Q1, Q2
1
FSXLF327
CRYSTAL_TH_SMD
Fox Electronics
X1
1
SwitchableHeader-3x08
P1
1
CONN_01X08
P2
1
CONN_01X04
P3
1
CONN_01X03
P4
1
GSM_AUDIO
P5
1
ATMEGA_CONN
P6
1
SPI_1.3_OLED
P7
1
FC68125
JACK1
2
JUMPER
JP1, JP2
1
JUMPER3
JP3
1
MIC
W3
1
ZHCS400TA
1N4148
Zetex
D1
1
PGB0010603MR
LED
Littelfuse
D2
2
PGB0010603MR
BAW99
Littelfuse
D3, D4
Show 14 more
QtyPartRefs
1
BAW99
D5
10
100nF
C1, C4, C5, C6, C7, C8, C13, C14 +2
2
18pF
C2, C3
2
10uF
C9, C10
2
33nF
C11, C12
1
100uF
C15
6
33pF
C16, C17, C18, C19, C20, C21
3
10pF
C22, C23, C24
2
150R
R1, R2
6
10K
R3, R4, R11, R12, R13, R17
6
47R
R5, R6, R7, R8, R9, R10
2
270R
R14, R15
1
R_Small
R16
2
1K8
R18, R19

Front prototype design files

The KiCad project lives in the libresmartphone/libresmartphone repository on GitHub; these links point at the commit this page was built from.

Front prototype: common questions

What microcontroller does the Front prototype use?

The Front prototype is built around the TPS65950BZXNR, from the ESP8266 family.

How big is the Front prototype PCB?

The Front prototype measures 40 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Front prototype?

69 components, from 34 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Front prototype design files?

From the libresmartphone/libresmartphone repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Front prototype design in my own project?

The repository has no license, so all rights stay with libresmartphone. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Front prototype 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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