2 layers44 × 33 mm
4 layers47 × 106 mm
GateDr mainboard
PajamaLlamaLand/LessThanThree1- Size
- 47 × 106 mm
- Copper layers
- 4
- Thickness
- 1.2 mm
- Parts
- 111
- Nets
- 84
- Pads
- 356
- Tracks, vias
- 574, 117
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 23 Sep 2025
- Updated
- 4 Mar 2026
Overview
GateDr mainboard is an open-source printed circuit board by PajamaLlamaLand, from the PajamaLlamaLand/LessThanThree repository on GitHub. It is a 4-layer board of 47 × 106 mm with 111 parts on 84 nets, routed with 574 tracks and 117 vias.
It is built around the ATSAMD21E17A-AU, MCP6002-I/SN and MCP6004-I/SL, with the LM1117MP-3.3, LM4040BIM3X-10 and WQP-WQP518MA among its other parts. Its parts include 39 resistors, 36 capacitors, 14 connectors, 8 diodes and 7 ICs. It belongs with the computers and single-board computers boards and the SAM D and SAM boards of this library.
Main components
12
ATSAMD21E17A-AU
TQFP-32(7x7)-40℃~+85℃ 1.62V~3.6V 10bit 128KB 12bit 16KB 26 32 Bit 48MHz ARM Cortex-M0+ Built-in FLASH TQFP-32(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
MCP6002-I/SN
SOIC-8-40℃~+125℃ 1.8V~6V 100uA 1MHz 1pA 1pA 2 23mA 28nV/√Hz@1kHz 2uV/℃ 4.5mV 600V/ms 76dB Rail-to-Rail Input, Rail-to-Rail Output SOIC-8 Operational Amplifier ROHSMicrochip TechnologyOperational Amplifier
MCP6004-I/SL
SOIC-14-40℃~+125℃ 1.8V~6V 100uA 1MHz 1pA 1pA 23mA 28nV/√Hz@1kHz 2uV/℃ 4 4.5mV 600V/ms 76dB ESD protection Rail-to-Rail Input, Rail-to-Rail Output SOIC-14 Operational Amplifier ROHSMicrochip TechnologyOperational Amplifier
LM1117MP-3.3
SOT-2230℃~+125℃@(Ta) 1 1.2V@(800mA) 15V 3.3V 5mA 75dB@(120Hz) 800mA 99uVrms Fixed Over Current Protection、Over Temperature Protection Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
LM4040BIM3X-10
SOT-23-3-40℃~+85℃@(Ta) 100ppm/℃ 100uA 10V 15mA 35uVrms Fixed Parallel ±0.2% SOT-23-3 Voltage Reference ROHSTexas InstrumentsVoltage Reference
WQP-WQP518MA
-- Audio Connectors ROHSQingPuAudio Connectors
1N5819HW-7-F-01
SOD-123Schottky DiodesDiodes Incorporated
5GTH935
插件Tactile SwitchesMEC Switches
10118194-0011LF
插件USB ConnectorsAmphenol
B3F-1000
插件-4P,6x6mm-25℃~+70℃ 1,000,000 cycles 1N 24V 4.3mm 50mA 6mm 6mm PC Pin Round Button SPST-NO Through Hole 插件-4P,6x6mm Tactile Switches ROHSOmronTactile Switches
PEC11R-4220F-S0024
插件插件 Rotary Encoders ROHSBournsRotary Encoders
PRTR5V0U2X
SOT-143-55℃~+125℃ 0.3pF、0.8pF 100W 10V、15V 5V 6.5V 6A 80nA ESD IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 Three channels Unidirectional SOT-143 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)
Parts
111| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 1.0n | Capacitor_SMD:C_0402_1005Metric | C12, C13, C14, C15, C16, C17, C18, C19, C22, C23, C24, C25 |
| 11 | 100n | Capacitor_SMD:C_0402_1005Metric | C2, C3, C10, C11, C20, C26, C28, C30, C32, C33, C36 |
| 10 | WQP-WQP518MA | GateDrFootprintLibrary:AudioJack_WQP518MA | J2, J3, J4, J5, J6, J7, J8, J9, J10, J11 |
| 9 | 100k | Resistor_SMD:R_0402_1005Metric | R3, R6, R9, R12, R15, R18, R37, R38, R39 |
| 7 | 1u | Capacitor_SMD:C_0603_1608Metric | C1, C21, C27, C29, C31, C34, C35 |
| 6 | 120k | Resistor_SMD:R_0402_1005Metric | R4, R5, R8, R11, R14, R17 |
| 6 | 20k | Resistor_SMD:R_0402_1005Metric | R2, R7, R10, R13, R16, R19 |
| 6 | 22u | Capacitor_SMD:C_0805_2012Metric | C4, C5, C6, C7, C8, C9 |
| 5 | 1k | Resistor_SMD:R_0402_1005Metric | R22, R26, R30, R34, R36 |
| 4 | 1k 1/4W | Resistor_SMD:R_0805_2012Metric | R23, R27, R31, R35 |
| 4 | 39k | Resistor_SMD:R_0402_1005Metric | R21, R24, R28, R32 |
| 4 | 56k | Resistor_SMD:R_0402_1005Metric | R20, R25, R29, R33 |
| 4 | WP483GDT Green | LED_THT:LED_D5.0mm_FlatTop | D3, D4, D5, D6 |
| 3 | 1n5819HW-7-F | Diode_SMD:D_SOD-123 | D1, D2, D8 |
| 3 | WE742792651 | GateDrFootprintLibrary:BEADC1608X100N | FB1, FB2, FB3 |
| 2 | 5GTH935 | GateDrFootprintLibrary:5GTH935 | SW1, SW2 |
| 2 | TL074HIDR | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U6, U7 |
| 1 | 10118194-0011LF | Connector_USB:USB_Micro-B_Amphenol_10118194_Horizontal | J14 |
| 1 | 1x7 100mil Female Socket | Connector_PinSocket_2.54mm:PinSocket_1x07_P2.54mm_Vertical | J12 |
| 1 | 2k2 | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | 2x5 100mil Shrouded Header | Connector_IDC:IDC-Header_2x05_P2.54mm_Vertical | J1 |
| 1 | 2x5 50mil Header | Connector_PinSocket_1.27mm:PinSocket_2x05_P1.27mm_Vertical | J13 |
| 1 | ATSAMD21E17A-AU | Package_QFP:TQFP-32_7x7mm_P0.8mm | U8 |
| 1 | B3F-1000 | Button_Switch_THT:SW_PUSH_6mm_H4.3mm | SW4 |
| 1 | LM1117MP-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | LM4040BIM3X-10 | Package_TO_SOT_SMD:SOT-23 | U3 |
| 1 | MCP6002-I/SN | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U5 |
| 1 | MCP6004-I/SL | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U4 |
| 1 | PEC11R-4220F-S0024 | GateDrFootprintLibrary:PEC11R4220FS0024 | SW3 |
| 1 | PRTR5V0U2X | Package_TO_SOT_SMD:SOT-143 | D7 |
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Questions
How big is the GateDr mainboard PCB?
It measures 47 × 106 mm and has 4 copper layers, 1.2 mm thick.
What parts does the GateDr mainboard use?
111 parts, built around the ATSAMD21E17A-AU, MCP6002-I/SN, MCP6004-I/SL and LM1117MP-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.
Where can I download the GateDr mainboard KiCad files?
From the PajamaLlamaLand/LessThanThree repository on GitHub, at the commit this page was made from: the board is GateDr/hardware/gateDr_mainboard/gateDr_mainboard.kicad_pcb and its schematic GateDr/hardware/gateDr_displayboard/gateDr_displayboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the GateDr mainboard design in my own project?
Its repository states no licence, so its author keeps all rights: ask PajamaLlamaLand before reusing the design.