

DSL Modem
Control a certain DSL-Modem through its internal serial port with a Raspberry Pi
- Size
- 100 × 65 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 57
- Nets
- 89
- Pads
- 275
- Tracks, vias
- 352, 67
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 17 Oct 2023
- Updated
- 5 Nov 2026
Overview
DSL Modem is an open-source printed circuit board by Qeteshpony, from the Qeteshpony/DSL-Modem repository on GitHub, published under the MIT licence. It is a 2-layer board of 100 × 65 mm with 57 parts on 89 nets, routed with 352 tracks and 67 vias.
It is built around the ATTINY85-20SU, LME78_05-2.0 and 1N5819WS, with the AO3401A among its other parts. Its parts include 22 resistors, 12 connectors, 5 capacitors, 5 diodes and 4 transistors. It belongs with the interfaces and adapters boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
4ATTINY85-20SU
SOIC-8-208mil-40℃~+85℃ 10bit 2.7V~5.5V 20MHz 512Byte 512Byte 6 8 Bit 8KB AVR Built-in FLASH SOIC-8-208mil Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)LME78_05-2.0
-Power Supply Module,Power SuppliesGAPTEC Electronic1N5819WS
SOD-3231 Independent 1A 25A 40V 500uA@40V 600mV@1A SOD-323 Schottky Diodes ROHSGuangdong HottechSchottky DiodesAO3401A
SOT-231 P-Channel 14nC@10V 30V 47mΩ@10V、60mΩ@4.5V、85mΩ@2.5V 4A 55pF 645pF 80pF 900mV SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
README
README.mdDSL-Modem Controller
A project to control a certain DSL-Modem through its internal serial port with a Raspberry Pi
Parts
57| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 680R | Resistor_SMD:R_0603_1608Metric | R7, R8, R13, R14, R15, R16, R17, R18 |
| 7 | 4k7 | Resistor_SMD:R_0603_1608Metric | R5, R6, R9, R10, R19, R21, R22 |
| 3 | 10k | Resistor_SMD:R_0603_1608Metric | R2, R11, R12 |
| 3 | 2N7002 | Package_TO_SOT_SMD:SOT-23 | Q2, Q3, Q4 |
| 2 | 100k | Resistor_SMD:R_0603_1608Metric | R1, R3 |
| 1 | 100n | Capacitor_SMD:C_0603_1608Metric | C3 |
| 1 | 100uF | Capacitor_SMD:C_1206_3216Metric | C2 |
| 1 | 10u | Capacitor_SMD:C_0603_1608Metric | C5 |
| 1 | 12VIN | My_Footprints:CTB9352-2 | J1 |
| 1 | 12VOUT | My_Footprints:CTB9352-2 | J2 |
| 1 | 12Vout | LED_SMD:LED_0603_1608Metric | D4 |
| 1 | 12in | LED_SMD:LED_0603_1608Metric | D3 |
| 1 | 1N5819WS | Diode_SMD:D_SOD-323 | D2 |
| 1 | 1k5 | Resistor_SMD:R_0603_1608Metric | R20 |
| 1 | 1n | Capacitor_SMD:C_0603_1608Metric | C4 |
| 1 | 200k | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | 22uF | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | 5V | LED_SMD:LED_0603_1608Metric | D5 |
| 1 | AO3401A | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | ATtiny85-20SU | Package_SO:SOIC-8W_5.3x5.3mm_P1.27mm | U2 |
| 1 | AVR-ISP-6 | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J12 |
| 1 | Display | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J5 |
| 1 | DualLED | My_Footprints:Everlight_Dual_LED_2x3mm | D1 |
| 1 | ETH1_EXT | Connector_RJ:RJ45C5_R1D_3.2E4G-Y_RL | J6 |
| 1 | ETH1_INT | Connector_RJ:RJ45C5_R1D_3.2E4G-Y_RL | J9 |
| 1 | ETH2_EXT | Connector_RJ:RJ45C5_R1D_3.2E4G-Y_RL | J7 |
| 1 | ETH2_INT | Connector_RJ:RJ45C5_R1D_3.2E4G-Y_RL | J10 |
| 1 | ETH3_EXT | Connector_RJ:RJ45C5_R1D_3.2E4G-Y_RL | J8 |
| 1 | ETH3_INT | Connector_RJ:RJ45C5_R1D_3.2E4G-Y_RL | J11 |
| 1 | Fan | Connector:FanPinHeader_1x04_P2.54mm_Vertical | M1 |
| 1 | LME78_05-2.0 | My_Footprints:LME78_1.0-Series | U1 |
| 1 | LOGO | My_Footprints:CutieMark7.5mmInverted | G*** |
| 1 | Raspberry_Pi_2_3 | My_Footprints:Raspberry Pi Universal Footprint | J4 |
| 1 | SW_Modem | Button_Switch_THT:SW_Tactile_SPST_Angled_PTS645Vx83-2LFS | SW1 |
| 1 | SW_Pi | Button_Switch_THT:SW_Tactile_SPST_Angled_PTS645Vx83-2LFS | SW2 |
| 1 | Serial | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J3 |
The 54 most common of 57 parts.
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Questions
How big is the DSL Modem PCB?
It measures 100 × 65 mm and has 2 copper layers, 1.6 mm thick.
What parts does the DSL Modem use?
57 parts, built around the ATTINY85-20SU, LME78_05-2.0, 1N5819WS and AO3401A. 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 DSL Modem KiCad files?
From the Qeteshpony/DSL-Modem repository on GitHub, at the commit this page was made from: the board is hardware/PCB/DSL-Modem.kicad_pcb and its schematic hardware/PCB/DSL-Modem.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the DSL Modem design in my own project?
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).