tetious/LarkyPrintBoardLarkable PCB for LarkyPrint
LarkyPrintBoard is an open-source printed circuit board by tetious, from the tetious/LarkyPrintBoard repository on GitHub, published under the MIT licence. It is a 2-layer board of 38 × 56 mm with 33 parts on 62 nets, routed with 491 tracks and 54 vias.
It is built around the ESP32-WROOM-32, CBT3257AD and LM1117-3.3. Its parts include 11 resistors, 8 connectors, 4 ICs, 3 capacitors and 1 diode. It belongs with the ESP32 boards of this library.
This is the PCB for the Lark printer board!
The Lark sits between your printer and it's RAMPSish LCD/SD card board and provides a fast and easy to use web interface for printing from SD cards.
It "just works" with most printers/firmwares that support the "LCD Smart Display" style 2-line text LCD.
With minor tweaks, it should work with any printer that supports Marlin.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 10K | Resistors_SMD:R_0805_HandSoldering | R2, R5, R6, R7, R8, R9, R10 |
| 4 | 680 | Resistors_SMD:R_0805_HandSoldering | R1, R3, R4, R11 |
| 2 | CBT3257A | SMD_Packages:SO-16-N | U3, U4 |
| 1 | 100uF | Capacitors_SMD:C_1206_HandSoldering | C3 |
| 1 | 1nf | Capacitors_SMD:C_0805_HandSoldering | C2 |
| 1 | 1uf | Capacitors_SMD:C_0805_HandSoldering | C4 |
| 1 | 3V3 | Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm | J8 |
| 1 | BOOT | Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm | J7 |
| 1 | EN | LarkyPrint:KXT131LHS | J6 |
| 1 | ESP32-WROOM | ESP32-footprints-Lib:ESP32-WROOM | U2 |
| 1 | EXT1 LCD | Pin_Headers:Pin_Header_Straight_2x05_Pitch2.54mm | J3 |
| 1 | EXT1 Printer | Pin_Headers:Pin_Header_Straight_2x05_Pitch2.54mm | J1 |
| 1 | EXT2 LCD | Pin_Headers:Pin_Header_Straight_2x05_Pitch2.54mm | J2 |
| 1 | EXT2 Printer | Pin_Headers:Pin_Header_Straight_2x05_Pitch2.54mm | J4 |
| 1 | LED | LEDs:LED_0805_HandSoldering | D1 |
| 1 | LM1117-3.3 | TO_SOT_Packages_SMD:TO-252-2 | U1 |
| 1 | LOGO | LarkyPrint:LOGO | G*** |
| 1 | LOGO | LarkyPrint:LOGO_17x8 | G*** |
| 1 | UART | Pin_Headers:Pin_Header_Straight_1x05_Pitch2.54mm | J5 |
The 29 most common of 33 parts.
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It measures 38 × 56 mm and has 2 copper layers, 1.6 mm thick.
33 parts, built around the ESP32-WROOM-32, CBT3257AD and LM1117-3.3. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the tetious/LarkyPrintBoard repository on GitHub, at the commit this page was made from: the board is LarkyPrintBoard.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).