2 layers149.3 × 104.5 mm
Sequencer
michd/modular-synth
Building a hardware modular synthesizer, this is where I'll collect module schematics and hardware designs.
132 parts20
2 layers50.5 × 47 mm
Clock generator
michd/modular-synth20Building a hardware modular synthesizer, this is where I'll collect module schematics and hardware designs.
- Size
- 50.5 × 47 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 22
- Nets
- 43
- Pads
- 116
- Tracks, vias
- 316, 28
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 18 Jul 2015
- Updated
- 22 Nov 2020
Overview
Clock generator is an open-source printed circuit board by michd, from the michd/modular-synth repository on GitHub. It is a 2-layer board of 50.5 × 47 mm with 22 parts on 43 nets, routed with 316 tracks and 28 vias.
It is built around the ATTINY84A-PU and MAX7221CWG+. Its parts include 7 capacitors, 3 resistors, 3 ICs, 3 connectors and 2 switches. It belongs with the audio and music and lEDs and displays boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
2
ATTINY84A-PU
DIP-14-40℃~+85℃ 1.8V~5.5V 10bit 12 20MHz 512Byte 512Byte 8 Bit 8KB AVR Built-in FLASH DIP-14 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
MAX7221CWG+
SOIC-24-300mil0℃~+70℃ 10MHz 4-Wire Serial Interface 4V~5.5V Adjustable Glow、Common Cathode SOIC-24-300mil Digital Tube Drivers ROHSMaxim Integrated (Analog Devices)Digital Tube Drivers
README
README.mdModular Synthesizer
My fiancee and I plan to build a modular synthesizer, for fun. Here's a repository to hold all kinds of stuff to do with that. I imagine it'll hold the following
- Schematic designs
- PCB designs derived from those schematic design
- Some 3D modeling for related hardware
- Any microcontroller code
Parts
22| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 100n | Capacitors_SMD:C_0805 | C3, C4, C8 |
| 2 | 100p | Capacitors_SMD:C_0805 | C6, C7 |
| 2 | SW_PUSH | Buttons_Switches_ThroughHole:SW_PUSH_6mm | SW1, SW2 |
| 1 | 100u | Capacitors_ThroughHole:CP_Radial_D5.0mm_P2.00mm | C1 |
| 1 | 10k | Resistors_SMD:R_0603 | R2 |
| 1 | 10u | Capacitors_SMD:C_1206 | C2 |
| 1 | 16MHz | Crystals:Resonator-2pin_w10.0mm_h5.0mm | Y1 |
| 1 | 220R | Resistors_SMD:R_1206 | R3 |
| 1 | 22k | Resistors_SMD:R_1206 | R1 |
| 1 | 4024 | Housings_SOIC:SOIC-14_3.9x8.7mm_Pitch1.27mm | U2 |
| 1 | ATTINY84 | Housings_SOIC:SOIC-14_3.9x8.7mm_Pitch1.27mm | IC1 |
| 1 | CONN_01X03 | Connectors_Molex:Molex_KK-6410-03_03x2.54mm_Straight | P1 |
| 1 | CONN_01X09 | Connectors_Molex:Molex_KK-6410-09_09x2.54mm_Straight | P3 |
| 1 | CONN_02X03 | Pin_Headers:Pin_Header_Straight_2x03_Pitch2.54mm | P2 |
| 1 | LB303VK | LB303AK:LB303AK | LD1 |
| 1 | LED | LEDs:LED_D5.0mm | D1 |
| 1 | MAX7221 | MAX7221:MAX7221-SOIC | U1 |
| 1 | Q_NPN_BEC | TO_SOT_Packages_SMD:SOT-23 | Q1 |
Questions
How big is the Clock generator PCB?
It measures 50.5 × 47 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Clock generator use?
22 parts, built around the ATTINY84A-PU and MAX7221CWG+. 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 Clock generator KiCad files?
From the michd/modular-synth repository on GitHub, at the commit this page was made from: the board is modules/clock-generator/kicad/clock-generator.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Clock generator design in my own project?
Its repository states no licence, so its author keeps all rights: ask michd before reusing the design.
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