

R Switch
Electronic Rotary Switch
- Size
- 78.7 × 92.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 156
- Nets
- 119
- Pads
- 435
- Tracks, vias
- 865, 98
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 5 (file 20191123)
- Created
- 24 Jul 2019
- Updated
- 18 May 2021
Overview
R Switch is an open-source printed circuit board by DavidMFlynn, from the DavidMFlynn/RotarySwitch repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 78.7 × 92.7 mm with 156 parts on 119 nets, routed with 865 tracks and 98 vias.
It is built around the 74HC238D and L7805. Its parts include 75 resistors, 52 diodes, 10 transistors, 7 connectors and 6 capacitors. It belongs with the PIC boards of this library.
Main components
274HC238D
SOP-16SOP-16 Signal Switches, Multiplexers, Decoders ROHSMDDSignal Switches, Multiplexers, DecodersL7805
TO-220ST0℃~+125℃@(Tj) 1 1.2A 20V 2V@(1A) 42uV 500uA 5V 73dB@(120Hz) Fixed Positive Short Circuit Protection TO-220ST Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSOSENVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdRotarySwitch
Electronic Rotary Switch
Parts
156| Qty | Value | Footprint | References |
|---|---|---|---|
| 23 | 1K0 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R6, R10, R11, R12, R13, R14, R31, R32, R33, R34, R35, R36, R37, R38, R57, R58 +7 |
| 18 | 10K | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R23, R24, R25, R26, R27, R28, R29, R30, R47, R48, R49, R50, R51, R52, R53, R54 +2 |
| 18 | D_Small_ALT | Diode_SMD:D_SOD-123 | D11, D12, D13, D14, D15, D16, D17, D18, D35, D36, D37, D38, D39, D40, D41, D42 +2 |
| 17 | D | Diode_SMD:D_SMA-SMB_Universal_Handsoldering | D1, D19, D20, D21, D22, D23, D24, D25, D26, D43, D44, D45, D46, D47, D48, D49 +1 |
| 17 | LED_Small | LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D2, D3, D4, D5, D6, D7, D8, D10, D27, D28, D29, D30, D31, D32, D33, D34 +1 |
| 16 | 47R | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R15, R16, R17, R18, R19, R20, R21, R22, R39, R40, R41, R42, R43, R44, R45, R46 |
| 12 | 47K | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R56, R59, R60, R61, R62, R63, R64, R68, R69, R73, R74, R75 |
| 8 | IRF7343PBF | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 |
| 6 | 470 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1, R2, R3, R4, R5, R55 |
| 5 | 0.1 | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C2, C3, C4, C5, C6 |
| 2 | 2N3906 | Package_TO_SOT_THT:TO-92_Inline | Q9, Q10 |
| 2 | 74HC238 | Package_DIP:DIP-16_W7.62mm_LongPads | U3, U4 |
| 2 | Conn_01x06 | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J2, J3 |
| 2 | Conn_01x08 | Connector_Phoenix_MSTB:PhoenixContact_MSTBVA_2,5_8-G-5,08_1x08_P5.08mm_Vertical | J5, J6 |
| 2 | MountingHole_3.2mm_M3 | MountingHole:MountingHole_3.2mm_M3 | H1, H2 |
| 1 | 4.7 | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C1 |
| 1 | Conn_01x03 | Connector_Phoenix_MSTB:PhoenixContact_MSTBVA_2,5_3-G-5,08_1x03_P5.08mm_Vertical | J7 |
| 1 | Conn_01x04 | Connector_Phoenix_MSTB:PhoenixContact_MSTBVA_2,5_4-G-5,08_1x04_P5.08mm_Vertical | J1 |
| 1 | Conn_01x05 | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J4 |
| 1 | L7805 | Package_TO_SOT_SMD:TO-252-2 | U2 |
| 1 | PIC16F1847-IP | Package_DIP:DIP-18_W7.62mm_LongPads | U1 |
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Questions
How big is the R Switch PCB?
It measures 78.7 × 92.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the R Switch use?
156 parts, built around the 74HC238D and L7805. 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 R Switch KiCad files?
From the DavidMFlynn/RotarySwitch repository on GitHub, at the commit this page was made from: the board is R_Switch Rev A/R_Switch.kicad_pcb and its schematic R_Switch Rev B/R_Switch.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the R Switch design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).