2 layers84.5 × 62.9 mm
2 layers84.5 × 81.9 mm
Interrupter
Caraffa-git/SD-Interrupter1MIDI/SD Tesla coil interrupter
- Size
- 84.5 × 81.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 42
- Nets
- 53
- Pads
- 170
- Tracks, vias
- 211, 8
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 4 Oct 2023
- Updated
- 26 Feb 2025
Overview
Interrupter is an open-source printed circuit board by Caraffa-git, from the Caraffa-git/SD-Interrupter repository on GitHub, published under the MIT licence. It is a 2-layer board of 84.5 × 81.9 mm with 42 parts on 53 nets, routed with 211 tracks and 8 vias.
It is built around the ATMEGA168-20PU and LD1117V33. Its parts include 16 resistors, 7 capacitors, 5 ICs, 5 switches and 4 connectors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2
ATMEGA168-20PU
PDIP-28-40℃~+85℃ 10bit 16KB 1KB 2.7V~5.5V 20MHz 23 512Byte 8 Bit AVR Built-in FLASH PDIP-28 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
LD1117V33
TO-2200℃~+125℃@(Tj) 1 1.2V@(800mA) 100uV 15V 3.3V 5mA 75dB@(120Hz) 800mA Fixed Over Current Protection、Thermal Shutdown Positive TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSSTMicroelectronicsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdTesla coil MIDI interrupter
It's modified version of OneTesla SD interrupter. To compile original software you have to install SdFat v1.1.4 library.
Parts
42| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 1k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R2, R3, R4, R5, R6, R7, R8 |
| 3 | 2k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R10, R11, R12 |
| 3 | 47uF | Capacitor_THT:CP_Radial_D4.0mm_P1.50mm | C1, C2, C3 |
| 2 | 100nF | Capacitor_THT:C_Disc_D5.1mm_W3.2mm_P5.00mm | C4, C5 |
| 2 | 10k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1, R9 |
| 2 | 18pF | Capacitor_THT:C_Disc_D5.1mm_W3.2mm_P5.00mm | C6, C7 |
| 1 | 100R | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R13 |
| 1 | 100k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R14 |
| 1 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1 |
| 1 | 220R | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R16 |
| 1 | 3.3k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R15 |
| 1 | 4N25 | Package_DIP:DIP-6_W7.62mm | U5 |
| 1 | ATmega168-20P | Package_DIP:DIP-28_W7.62mm | U4 |
| 1 | AVR-ISP-6 | Connector_PinSocket_2.54mm:PinSocket_2x03_P2.54mm_Vertical | J3 |
| 1 | BL | Jumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP1 |
| 1 | BL_SW | Switch:Switch 12x6mm | SW2 |
| 1 | Crystal | Crystal:Crystal_HC49-4H_Vertical | Y1 |
| 1 | DIN-5 | w_conn_av:din-5 | J4 |
| 1 | DN_SW | Button_Switch_THT:SW_PUSH_6mm_H7.3mm | SW4 |
| 1 | IFE91A | IFE91A:OPTO-TRANSMITTER | U3 |
| 1 | Jack-DC | Connector_BarrelJack:BarrelJack_Horizontal | J1 |
| 1 | LD1117V33 | Package_TO_SOT_THT:TO-220-3_Horizontal_TabUp | U2 |
| 1 | LM7805_TO220 | Package_TO_SOT_THT:TO-220-3_Horizontal_TabUp | U1 |
| 1 | LOGO | LOGO | G*** |
| 1 | MAIN_SW | Switch:Switch 12x6mm | SW1 |
| 1 | Micro_SD_Card_Det | Connector_Card:microSD_HC_Hirose_DM3AT-SF-PEJM5 | J2 |
| 1 | OK_SW | Button_Switch_THT:SW_PUSH_6mm_H7.3mm | SW5 |
| 1 | UP_SW | Button_Switch_THT:SW_PUSH_6mm_H7.3mm | SW3 |
| 1 | WC1602A | Display:WC1602A | DS1 |
Questions
How big is the Interrupter PCB?
It measures 84.5 × 81.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Interrupter use?
42 parts, built around the ATMEGA168-20PU and LD1117V33. 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 Interrupter KiCad files?
From the Caraffa-git/SD-Interrupter repository on GitHub, at the commit this page was made from: the board is hardware/tht/interrupter.kicad_pcb and its schematic hardware/smd/interrupter.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Interrupter 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).
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