2 layers222.3 × 80 mm
Theremin lcd controls board
fpga-theremin/theremin
Open source digital FPGA based theremin project
88 parts11
2 layers51.4 × 24.8 mm
Phase shift sensor
fpga-theremin/theremin11Open source digital FPGA based theremin project
- Size
- 51.4 × 24.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 15
- Nets
- 14
- Pads
- 50
- Tracks, vias
- 129, 8
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 11 Sep 2018
- Updated
- 13 Jul 2021
Overview
Phase shift sensor is an open-source printed circuit board by fpga-theremin, from the fpga-theremin/theremin repository on GitHub. It is a 2-layer board of 51.4 × 24.8 mm with 15 parts on 14 nets, routed with 129 tracks and 8 vias.
It is built around the 74AC86SC. Its parts include 5 capacitors, 4 resistors, 4 connectors and 2 ICs. It belongs with the sensors and measurement and fPGA and programmable logic boards of this library.
Main components
1README
README.mdFPGA based theremin
Open source digital FPGA based theremin project.
Hardware design and build instructions can be found on FPGA Theremin Project Page
Theremin is an electronic musical instrument controlled without physical contact by the thereminist (performer). It is named after the Westernized name of its Soviet inventor, Léon Theremin (Лев Термéн), who patented the device in 1928.
FPGA Theremin project is attempt to build modern digital theremin with rich set of features.
License
FPGA Theremin is open source hardware and software project.
All hardware designed for this project is published under TAPR Open Hardware License
All software (including both HDL and C/C++ code) is published under GNU GENERAL PUBLIC LICENSE Version 2
HDL sources
Modules are written in SystemVerilog.
Some of modules use Xilinx Series 7 specific hardware blocks.
HLD code for modules:
- theremin_sensor - double channel high precision frequency meter
- encoders_board - interfacing to 5 incremental encoders with buttons and one tact button
- lcd_controller - LCD controller with RGB interface and DMA
- audio_io - audio out 2 * stereo * 24bit * 48KHz I2S outputs and one stereo * 24bit * 48KHz I2S input
- theremin_i2c - I2C support
- theremin_io - Top Level Module combining all theremin peripherials
Parts
15| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 470K | Resistor_SMD:R_1206_3216Metric_Pad1.42x1.75mm_HandSolder | R2, R3, R4 |
| 2 | 0.1uF | Capacitor_SMD:C_1206_3216Metric_Pad1.42x1.75mm_HandSolder | C3, C4 |
| 1 | 10uF | Capacitor_SMD:C_1206_3216Metric_Pad1.42x1.75mm_HandSolder | C5 |
| 1 | 150 | Resistor_SMD:R_1206_3216Metric_Pad1.42x1.75mm_HandSolder | R1 |
| 1 | 1pF | Capacitor_THT:C_Disc_D7.5mm_W2.5mm_P5.00mm | C1 |
| 1 | 33pF | Capacitor_THT:C_Disc_D7.5mm_W2.5mm_P5.00mm | C2 |
| 1 | 74AC86 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U1 |
| 1 | ANT | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J4 |
| 1 | L_IN | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J2 |
| 1 | L_OUT | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J3 |
| 1 | SENSOR | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Horizontal | J1 |
| 1 | sp721 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2 |
Questions
How big is the Phase shift sensor PCB?
It measures 51.4 × 24.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Phase shift sensor use?
15 parts, built around the 74AC86SC. 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 Phase shift sensor KiCad files?
From the fpga-theremin/theremin repository on GitHub, at the commit this page was made from: the board is teensy4theremin/kicad/sensor/phase_shift_sensor/phase_shift_sensor.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Phase shift sensor design in my own project?
Its repository states no licence, so its author keeps all rights: ask fpga-theremin before reusing the design.
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