Paperd ink rev4
About the Paperd ink rev4 PCB
Paperd ink rev4 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 89 components from 39 distinct parts.
Its main chip is the ESP32-WROOM-32D, from the ESP32 family. Other key parts include the XC6220B331MR-G, BQ21040DBVR, USBLC6-2SC6, CP2104-F03-GMR and PCF8574ADGVR. By type, the board carries 31 resistors, 24 capacitors, 7 transistors, 6 ICs, 5 switches and 5 diodes.
From the project
Hardware files for paperd.ink
Main components on the Paperd ink rev4
Paperd ink rev4 bill of materials (BOM)
89 components, 39 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | XC6220B331MR-G Torex Semicon | SOT-23-5 | U1 |
| 1 | BQ21040DBVR BQ21040 Texas Instruments | SOT-23-6 | U2 |
| 1 | USBLC6-2SC6 STM/Tech Public | SOT-23-6 | U3 |
| 1 | CP2104-F03-GMR CP2104 Silicon Labs | QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm | U4 |
| 1 | PCF8574ADGVR PCF8574 TI or NXP Semicon | PCF8574ADGVR | U5 |
| 1 | ESP32-WROOM-32D OLIMEX_Cases_ESP-WROOM-32 Espressif Systems | ESP32-WROOM-32 | U6 |
| 4 | DMP2035U-7 DMP2035 Diodes Incorporated | SOT-23 | Q1, Q3, Q4, Q5 |
| 2 | T2N7002BK,LM T2N7002BK TOSHIBA | SOT-23 | Q2, Q8 |
| 1 | UMH3N Changjiang Electronics Tech (CJ) | SOT-363_SC-70-6 | Q6 |
| 1 | Q13FC1350000400 32.768KHz Seiko Epson | Q13FC1350000400 | Y1 |
| 1 | 0.5-24P XGXJ-H2.0 119 E-paper_24_pins SHOU HAN | 24 pin FPC connector | DS1 |
| 1 | 918-418K2023S40019 USB_C_Receptacle Jing Extension of the Electronic Co. | USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
| 1 | DNP EXT_CONN | PinHeader_2x13_P2.54mm_Vertical_SMD | J4 |
| 1 | C47647 LiPo BOOMELE(Boom Precision Elec) | JST_PH_B2B-PH-SM4-TB_1x02-1MP_P2.00mm_Vertical | BATT1 |
| 1 | KLJ-1230 Piezo_Buzzer KELIKING | KLJ-1230 | BZ1 |
| 1 | GDEW042T2 Good-Display | GDEW042T2 | DISP1 |
| 1 | MF-PSMF050X-2 1A BOURNS | Fuse_0805_2012Metric | F1 |
| 1 | DNP IO_EXP_JMP | SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP1 |
| 1 | HYC77-TF09-200 micro_sd_card HOAUC | HYC77-TF09-200 | MICRO_SD1 |
| 1 | K2-1822SA-A3DW-06 RESET Korean Hroparts Elec | K2-1822SA-A3DW-06 | SW1 |
Show 19 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | TS36CA-0.7 BTN SHOU HAN | TS36CA-0.7 | SW2, SW3, SW4, SW5 |
| 4 | LMBR130T1G LMBR130 LRC | D_SOD-123 | D1, D2, D3, D4 |
| 1 | TJ-S1706SW6TGLC2R-A5 LED_Small TOGIALED | TJ-S1706SW6TGLC2R-A5 | D5 |
| 1 | CBC3225T680MR 68uH/1A Taiyo Yuden | L_1210_3225Metric | L1 |
| 12 | CL10A105KB8NNNC 1uF/50V Samsung Electro-Mechanics | C_0603_1608Metric | C1, C2, C3, C5, C6, C10, C11, C12 +4 |
| 5 | CL05A105KA5NQNC 1uF/25V Samsung Electro-Mechanics | C_0402_1005Metric | C4, C8, C17, C18, C20 |
| 2 | CL21A475KBQNNNE 4.7uF/50V Samsung Electro-Mechanics | C_0805_2012Metric | C7, C9 |
| 1 | CL05A106MQ5NUNC 10uF/6.3V Samsung Electro-Mechanics | C_0402_1005Metric | C19 |
| 2 | CC0402KRX5R9BB104 0.1uF/50V YAGEO | C_0402_1005Metric | C21, C24 |
| 2 | 0402CG120J500NT 12pF/50V FH(Guangdong Fenghua Advanced Tech) | C_0402_1005Metric | C22, C23 |
| 5 | WR04X4703FTL 470k Walsin Tech Corp | R_0402_1005Metric | R1, R3, R9, R24, R29 |
| 5 | WR04X122JTL 1.2k Walsin Tech Corp | R_0402_1005Metric | R2, R8, R12, R22, R27 |
| 12 | RMS04JT103 10k TA-I Tech | R_0402_1005Metric | R4, R5, R13, R14, R15, R16, R17, R18 +4 |
| 1 | 0603WAF470LT5E 0.47 UNI-ROYAL(Uniroyal Elec) | R_0603_1608Metric | R6 |
| 3 | RMS04FT1004 1M TA-I Tech | R_0402_1005Metric | R7, R11, R21 |
| 1 | AC0402FR-071M6L 1.6M YAGEO | R_0402_1005Metric | R10 |
| 1 | 0402WGJ0471TCE 470 UNI-ROYAL(Uniroyal Elec) | R_0402_1005Metric | R23 |
| 1 | WR04X1200FTL 120 Walsin Tech Corp | R_0402_1005Metric | R28 |
| 2 | WR04X5101FTL 5.1k 1% Walsin Tech Corp | R_0402_1005Metric | R30, R31 |
Paperd ink rev4 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 rev4: common questions
What microcontroller does the Paperd ink rev4 use?
The Paperd ink rev4 is built around the ESP32-WROOM-32D, from the ESP32 family.
How big is the Paperd ink rev4 PCB?
The Paperd ink rev4 measures 92.1 × 78.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Paperd ink rev4?
89 components, from 39 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 rev4 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 rev4 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 rev4 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.
More boards in paperd.ink_hw
Earlier revisions in the repo: paperd_ink_rev3
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