2 layers99.9 × 72.8 mm
2 layers99.9 × 99.8 mm
GR Loop Switcher
GadgetReboot/Loop_Switcher2Guitar Effects Loop Switcher Matrix Board
- Size
- 99.9 × 99.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 84
- Nets
- 95
- Pads
- 294
- Tracks, vias
- 1,607, 242
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 21 Dec 2023
- Updated
- 5 Jan 2024
Overview
GR Loop Switcher is an open-source printed circuit board by GadgetReboot, from the GadgetReboot/Loop_Switcher repository on GitHub. It is a 2-layer board of 99.9 × 99.8 mm with 84 parts on 95 nets, routed with 1,607 tracks and 242 vias.
It is built around the MAX3485ED, WEMOS D1 MINI and ICL7660N, with the MT8816AP1 and PJ-202A among its other parts. Its parts include 36 connectors, 14 capacitors, 9 resistors, 7 ICs and 2 diodes. It belongs with the ESP8266 boards of this library.
Main components
5
MAX3485ED
SOP-8-40℃~+85℃ 1 1 10Mbps 1mA 3.135V~3.465V 32 Half-Duplex Transceiver ±8kV SOP-8 RS-485 / RS-422 ICs ROHSHTC Korea TAEJIN TechRS-485 / RS-422 ICs
WEMOS D1 MINI
A mini wifi board with 4MB flash based on ESP-8266EX, hardware version 4.0.0.LolinUncategorised
ICL7660N
DIP-83V~9.5V DIP-8 Charge Pumps ROHSHGSEMIDC-DC Converters
MT8816AP1
PLCC-44(16.5x16.5)-40℃~+85℃ 16:1 20pF 30ns 4.5V~13.2V 45MHz 65Ω 8 Bidirectional analog channel PLCC-44(16.5x16.5) Analog Switches, Multiplexers ROHSMicrochip TechnologyAnalog Switches, Multiplexers
PJ-202A
插件-25℃~+85℃ 2.5A 24V 2mm 6.5mm DC Power Jack Right Angle 插件 DC Power Connectors ROHSCUIDC Power Connectors
README
README.mdLoop_Switcher
Guitar Effects Loop Switcher Matrix Board
Parts
84| Qty | Value | Footprint | References |
|---|---|---|---|
| 33 | Conn_01x02 | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J1, J2, J10, J11, J12, J13, J14, J15, J16, J17, J18, J19, J20, J22, J23, J24 +17 |
| 10 | 100nF | Capacitor_THT:C_Disc_D3.8mm_W2.6mm_P2.50mm | C1, C2, C4, C8, C9, C10, C11, C12, C13, C14 |
| 9 | TestPoint_Alt | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9 |
| 7 | 10K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R3, R4, R7, R8, R9 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | MH1, MH2, MH3, MH4 |
| 3 | 10uF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C3, C5, C6 |
| 2 | 2N7000 | Package_TO_SOT_THT:TO-92_Inline | Q1, Q2 |
| 2 | MT8816 | Package_LCC:PLCC-44_THT-Socket | U5, U6 |
| 1 | 120r | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5 |
| 1 | 1N4001 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1 |
| 1 | 1uF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C7 |
| 1 | 270r | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R6 |
| 1 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J30 |
| 1 | Conn_01x03 | Connector_JST:JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical | J21 |
| 1 | ICL7660 | Package_DIP:DIP-8_W7.62mm_LongPads | U2 |
| 1 | LED_Small_ALT | LED_THT:LED_D5.0mm | D2 |
| 1 | LM7805_TO220 | Package_TO_SOT_THT:TO-220-3_Vertical | U4 |
| 1 | LOGO | _Custom_Footprints:pcb way logo | G*** |
| 1 | MAX3485 | Package_DIP:DIP-8_W7.62mm_LongPads | U3 |
| 1 | MCP23017_SP | Package_DIP:DIP-28_W7.62mm | U7 |
| 1 | PJ-202A | digikey-footprints:Barrel_Jack_5.5mmODx2.1mmID_PJ-202A | J36 |
| 1 | WeMos_D1_mini | Module:WEMOS_D1_mini_light | U1 |
Questions
How big is the GR Loop Switcher PCB?
It measures 99.9 × 99.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the GR Loop Switcher use?
84 parts, built around the MAX3485ED, WEMOS D1 MINI, ICL7660N and MT8816AP1. 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 GR Loop Switcher KiCad files?
From the GadgetReboot/Loop_Switcher repository on GitHub, at the commit this page was made from: the board is KiCad/GR_Loop_Switcher.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the GR Loop Switcher design in my own project?
Its repository states no licence, so its author keeps all rights: ask GadgetReboot before reusing the design.
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