2 layers152 × 88 mm
RFBitBangSMT
profdc9/RFBitBanger
A QRP digital transceiver created from readily available parts for off-the-grid maintenance
271 parts222
2 layers40.6 × 27.9 mm
Ruby amp
scottylogan/ruby-amp- Size
- 40.6 × 27.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 21
- Nets
- 12
- Pads
- 47
- Tracks, vias
- 49, 0
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 8 Aug 2020
- Updated
- 16 Apr 2025
Overview
Ruby amp is an open-source printed circuit board by scottylogan, from the scottylogan/ruby-amp repository on GitHub, published under the MIT licence. It is a 2-layer board of 40.6 × 27.9 mm with 21 parts on 12 nets, routed with 49 tracks and 0 vias.
It is built around the LM386. Its parts include 6 capacitors, 4 resistors, 1 IC and 1 transistor. It belongs with the audio and music boards of this library.
Main components
1README
README.mdMy version of the Ruby Amp.
Parts
21| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2 | H1, H2, H3, H4 |
| 3 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | IN1, OUT1, PWR1 |
| 2 | 47n | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C2, C6 |
| 2 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | GAIN1, VOL1 |
| 1 | 10 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R4 |
| 1 | 100n | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C5 |
| 1 | 100u | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C1 |
| 1 | 1M5 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R1 |
| 1 | 220p | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C4 |
| 1 | 220u | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C7 |
| 1 | 2K2 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R3 |
| 1 | 3K9 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R2 |
| 1 | LM386 | Package_DIP:DIP-8_W7.62mm_Socket | U1 |
| 1 | MPF102 | Package_TO_SOT_THT:TO-92 | Q1 |
Questions
How big is the Ruby amp PCB?
It measures 40.6 × 27.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Ruby amp use?
21 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 Ruby amp KiCad files?
From the scottylogan/ruby-amp repository on GitHub, at the commit this page was made from: the board is ruby-amp.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Ruby amp 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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