2 layers99.1 × 66 mm
Spectrum analyzer display
shimo8810/spectrum-analyzer
This is a stereo 7-band spectrum analyzer utilizing the MSGEQ7
20 partsCERN-OHL-P-2.0
2 layers99.1 × 66 mm
Spectrum analyzer controller
shimo8810/spectrum-analyzerThis is a stereo 7-band spectrum analyzer utilizing the MSGEQ7
- Size
- 99.1 × 66 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 50
- Nets
- 79
- Pads
- 224
- Tracks, vias
- 233, 139
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 25 Jul 2023
- Updated
- 10 Sep 2023
Overview
Spectrum analyzer controller is an open-source printed circuit board by shimo8810, from the shimo8810/spectrum-analyzer repository on GitHub, published under the CERN-OHL-P-2.0 licence. It is a 2-layer board of 99.1 × 66 mm with 50 parts on 79 nets, routed with 233 tracks and 139 vias.
It is built around the ATTINY84-20PU, 74HC595 and ULN2003. Its parts include 15 capacitors, 15 resistors, 8 ICs, 5 connectors and 1 switch. It belongs with the sensors and measurement boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
3
ATTINY84-20PU
PDIP-14-40℃~+85℃ 10bit 12 2.7V~5.5V 20MHz 512Byte 512Byte 8 Bit 8KB AVR Built-in FLASH PDIP-14 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
74HC595
SOP-16-40℃~+85℃ 1 100ns@5V,50pF 10MHz 2V~6V 74HC 8 Serial-to-Serial or Parallel Tri-State SOP-16 Shift Registers ROHSGRShift RegistersULN2003
SOP-161.1V@250uA,100mA 25pF 2V 30V 500mA 50uA 50uA Seven channels SOP-16 Darlington Transistor Arrays ROHSBLDarlington Transistor Arrays
README
README.mdSpectrum Analyzer
This is a stereo 7-band spectrum analyzer utilizing the MSGEQ7.
Tools
LED Matrix Generator
this tool is for generating data for LED matrix.
License
- Software: MIT License
- Hardware: CERN Open Hardware License version 2.0
Acknowledgments
Parts
50| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 0.1u | Capacitor_THT:C_Disc_D3.4mm_W2.1mm_P2.50mm | C3, C4, C5, C6, C8, C9, C10, C11, C12, C13, C14, C15 |
| 10 | 330 | Library:SP_R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R6, R7, R8, R9, R10, R11, R12, R13, R14, R15 |
| 4 | MountingHole_3.2mm_M3 | MountingHole:MountingHole_3.2mm_M3 | REF1, REF2, REF3, REF4 |
| 3 | 10k | Library:SP_R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R4, R5 |
| 3 | 74HC595 | Package_DIP:DIP-16_W7.62mm | U4 74HC595, U5 74HC595, U6 74HC595 |
| 2 | 200k | Library:SP_R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2, R3 |
| 2 | 33p | Capacitor_THT:C_Disc_D3.4mm_W2.1mm_P2.50mm | C1, C2 |
| 2 | MSGEQ7 | Package_DIP:DIP-8_W7.62mm | U1 MSGEQ7, U2 MSGEQ7 |
| 2 | ULN2003 | Package_DIP:DIP-16_W7.62mm | U7 ULN2003, U8 ULN2003 |
| 1 | 100u | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C7 |
| 1 | 10k | Potentiometer_THT:Potentiometer_Alps_RK097_Dual_Horizontal | RV1 |
| 1 | ATtiny84-20P | Package_DIP:DIP-14_W7.62mm | U3 ATtiny84 |
| 1 | AudioJack3 | Connector_Audio:Jack_3.5mm_Switronic_ST-005-G_horizontal | J1 |
| 1 | Barrel_Jack_Switch | Connector_BarrelJack:BarrelJack_Horizontal | J3 |
| 1 | Conn_01x10_Socket | Connector_PinSocket_2.54mm:PinSocket_1x10_P2.54mm_Vertical | J4 |
| 1 | Conn_01x14_Socket | Connector_PinSocket_2.54mm:PinSocket_1x14_P2.54mm_Vertical | J5 |
| 1 | Conn_02x03_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Horizontal | J2 |
| 1 | LOGO | Library:equalizer_icon | G1 |
| 1 | SW_SPDT | aki_Switch:4MS1R202M6QES | SW1 |
Questions
How big is the Spectrum analyzer controller PCB?
It measures 99.1 × 66 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Spectrum analyzer controller use?
50 parts, built around the ATTINY84-20PU, 74HC595 and ULN2003. 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 Spectrum analyzer controller KiCad files?
From the shimo8810/spectrum-analyzer repository on GitHub, at the commit this page was made from: the board is electronics/spectrum_analyzer_controller/spectrum_analyzer_controller.kicad_pcb and its schematic electronics/spectrum_analyzer_controller/spectrum_analyzer_controller.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Spectrum analyzer controller design in my own project?
Its repository publishes it under the CERN-OHL-P-2.0 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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