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Paperd.ink

paperdink·paperd.ink_hw·rev2/paperd.ink.kicad_pcb

Paperd.ink PCB layout, top view — open source ESP32 board by paperdink
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About the Paperd.ink PCB

Paperd.ink is an open source ESP32 PCB design by paperdink, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 92.1 × 78.1 mm, with 85 components from 41 distinct parts.

Its main chip is the OLIMEX_CASES_ESP-WROOM-32, from the ESP32 family. Other key parts include the AP2112K-3.3, BQ21040, USBLC6-2SC6, CP2104 and PCF8574APWR. By type, the board carries 29 resistors, 24 capacitors, 8 transistors, 6 ICs, 5 switches and 4 diodes.

From the project

Hardware files for paperd.ink

Main components on the Paperd.ink

AP2112K-3.3BQ21040USBLC6-2SC6CP2104PCF8574APWROLIMEX_CASES_ESP-WROOM-32

Paperd.ink bill of materials (BOM)

85 components, 41 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
AP2112K-3.3
U1
1
BQ21040
U2
1
USBLC6-2SC6
U3
1
CP2104
U4
1
PCF8574APWR
U5
1
OLIMEX_CASES_ESP-WROOM-32
OLIMEX_Cases_ESP-WROOM-32
U6
4
DMP2035
Q1, Q3, Q4, Q5
2
T2N7002BK
Q2, Q8
2
UMH3N
Q6, Q7
1
32.768KHZ
32.768KHz
Y1
1
LiPo
BATT1
1
USB_B_Micro
J1
1
EXT_CONN
J4
1
Piezo_Buzzer
BZ1
1
E-PAPER_24_PINS
E-paper_24_pins
DS1
1
1A
F1
1
micro_sd_card
MICRO_SD1
1
RESET
SW1
1
BTN_1
SW2
1
BTN_2
SW3
Show 21 more
QtyPartRefs
1
BTN_3
SW4
1
BTN_4
SW5
3
LMBR130
D1, D2, D3
1
LMBR130
D4
1
68UH/1A
68uH/1A
L1
10
1UF/50V
1uF/50V
C1, C2, C3, C10, C11, C12, C13, C14 +2
6
1UF/25V
1uF/25V
C4, C5, C6, C8, C18, C20
2
4.7UF/50V
4.7uF/50V
C7, C9
1
10UF/6.3V
1uF/25V
C17
1
10UF/6.3V
10uF/6.3V
C19
2
0.1UF/50V
0.1uF/50V
C21, C24
2
12PF/50V
12pF/50V
C22, C23
4
470K
470k
R1, R3, R9, R29
5
1.2K
1.2k
R2, R8, R12, R22, R27
11
10K
10k
R4, R5, R13, R14, R15, R16, R17, R18 +3
1
R47
0.47
R6
3
1M
R7, R11, R21
1
1.6M
R10
2
120R
470k
R23, R24
1
120R
10k
R25
1
120R
120
R28

Paperd.ink design files

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

Paperd.ink: common questions

What microcontroller does the Paperd.ink use?

The Paperd.ink is built around the OLIMEX_CASES_ESP-WROOM-32, from the ESP32 family.

How big is the Paperd.ink PCB?

The Paperd.ink measures 92.1 × 78.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Paperd.ink?

85 components, from 41 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 Paperd.ink design files?

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

Can I use the Paperd.ink design in my own project?

Yes, under the terms of its CC-BY-SA-4.0 license, which paperdink chose for the repository.

Can I test firmware for the Paperd.ink without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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