2 layers152 × 88 mm
RFBitBangSMT
profdc9/RFBitBanger
A QRP digital transceiver created from readily available parts for off-the-grid maintenance
271 parts222
2 layers146 × 91 mm
A basic theremin for a potential workshop
- Size
- 146 × 91 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 50
- Nets
- 38
- Pads
- 138
- Tracks, vias
- 184, 0
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 28 May 2024
- Updated
- 22 Sep 2024
Overview
Theremin is an open-source printed circuit board by bristol-communal-modular, from the bristol-communal-modular/basic-theremin repository on GitHub. It is a 2-layer board of 146 × 91 mm with 50 parts on 38 nets, routed with 184 tracks and 0 vias.
It is built around the LM386. Its parts include 13 resistors, 12 capacitors, 4 ICs, 4 diodes and 2 connectors.
Main components
1Parts
50| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 10uF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C6, C8, C9, C10, C11 |
| 4 | 270k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R3, R8, R12 |
| 4 | MountingHole_3.2mm_M3 | MountingHole:MountingHole_3.2mm_M3 | EF**, EF**, EF**, EF** |
| 3 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D4 |
| 3 | 22k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R4, R6, R7 |
| 3 | 27k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2, R5, R11 |
| 2 | 100nF | Capacitor_THT:C_Rect_L7.0mm_W3.5mm_P5.00mm | C3, C12 |
| 2 | 100pF | Capacitor_THT:C_Rect_L7.0mm_W3.5mm_P5.00mm | C1, C2 |
| 2 | 10nF | Capacitor_THT:C_Rect_L7.0mm_W3.5mm_P5.00mm | C4, C5 |
| 2 | 4069 | Package_DIP:DIP-14_W7.62mm_Socket_LongPads | U1, U2 |
| 2 | MountingHole_Pad | project-footprints:crocclipcircleee | H1, H2 |
| 2 | TestPoint | Rumblesan_Standard_Parts:TestPoint_Loop_D2.50mm_Drill1.0mm_LowProfile | TP1, TP2 |
| 1 | 100r | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R10 |
| 1 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R13 |
| 1 | 10k | Rumblesan_Potentiometer_THT:Potentiometer_THT_Bourns_3306P_Vertical | RV1 |
| 1 | 10r | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R9 |
| 1 | 1k | Potentiometer_THT:Potentiometer_Alpha_RD901F-40-00D_Single_Vertical | RV3 |
| 1 | 25k | Potentiometer_THT:Potentiometer_Alpha_RD901F-40-00D_Single_Vertical | RV2 |
| 1 | 47nF | Capacitor_THT:C_Rect_L7.0mm_W3.5mm_P5.00mm | C7 |
| 1 | 9V | project-footprints:BatteryHolder_Eagle_12BH611-GRMODDEDBYROBIN | BT1 |
| 1 | Eurorack Mono Jack | Rumblesan_Audio_Connectors:Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical | J1 |
| 1 | Expression Attachment | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J3 |
| 1 | LED | LED_THT:LED_D5.0mm | D3 |
| 1 | LM386 | Package_DIP:DIP-8_W7.62mm_Socket_LongPads | U3 |
| 1 | LP2950-5.0_TO92 | Package_TO_SOT_THT:TO-92_Inline_Wide | U4 |
| 1 | SW_SPDT | Button_Switch_THT:SW_Slide_SPDT_Angled_CK_OS102011MA1Q | SW1 |
| 1 | Speaker | project-footprints:40mmSpeakerdropin | LS1 |
The 49 most common of 50 parts.
Questions
How big is the Theremin PCB?
It measures 146 × 91 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Theremin use?
50 parts, built around the LM386. 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 Theremin KiCad files?
From the bristol-communal-modular/basic-theremin repository on GitHub, at the commit this page was made from: the board is kicad/theremin.kicad_pcb and its schematic kicad/theremin.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Theremin design in my own project?
Its repository states no licence, so its author keeps all rights: ask bristol-communal-modular before reusing the design.
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