2 layers65 × 86 mm
Pcb KE 2 JULIUS
jliusgustalvoo/making-pcb-with-esp32-s3-with-sensor-actuator-i2c-pin
making pcb with esp32-s3 with sensor,actuator,i2c pin for college task
78 parts
2 layers228.6 × 129.5 mm
A MIDI foot controller project
- Size
- 228.6 × 129.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 103
- Nets
- 140
- Pads
- 409
- Tracks, vias
- 722, 40
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 10 Jul 2024
- Updated
- 27 Sep 2026
Overview
Core is an open-source printed circuit board by EMajesty, from the EMajesty/midilord repository on GitHub. It is a 2-layer board of 228.6 × 129.5 mm with 103 parts on 140 nets, routed with 722 tracks and 40 vias.
It is built around the ESP32-S3-WROOM-1-N8, LM2596S-5.0 and 74HCT04D, with the USBLC6-2SC6 and WS2812B among its other parts. Its parts include 21 resistors, 21 diodes, 19 capacitors, 12 switches and 8 connectors. It belongs with the audio and music boards and the ESP32 boards of this library.
Main components
5
ESP32-S3-WROOM-1-N8
SMD,25.5x18mm-40℃~+85℃ -98.2dBm 2.4GHz 20.5dBm 355mA 3V~3.6V 95mA Bluetooth5.0 ESP32-S3 Chip On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
LM2596S-5.0
TO-263-5-40℃~+125℃@(TJ) 1 150kHz 3A 4.5V~40V 5V 5mA Buck Buck Built-in Fixed No TO-263-5 DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
74HCT04D
SO-14-40℃~+125℃ 1 19ns@4.5V,50pF 2V 2uA 3.7V 4.5V~5.5V 400mV 4mA 4mA 6 74HCT 800mV SO-14 Inverters ROHSNexperiaInverters
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
WS2812B
5mm X 5mm Surface Mount RGB LED with Intelligent ControlWorldsemiUncategorised
README
README.mdmidilord
MIDI controller pedal built on ESP32-S3.
Hardware
- 8 footswitches
- 4×40 character LCD (ST7066U, 4-bit parallel)
- 1 MIDI IN, multiple MIDI OUTs
- USB MIDI (native ESP32-S3 USB OTG port)
- 9V pedal power, regulated to 5V and 3.3V logic
LCD pinout (XNY4004A, 18-pin)
| Pin | Function |
|---|---|
| 1 | DB0 |
| 2 | DB1 |
| 3 | DB2 |
| 4 | DB3 |
| 5 | DB4 |
| 6 | DB5 |
| 7 | DB6 |
| 8 | DB7 |
| 9 | E1 |
| 10 | R/W |
| 11 | RS |
| 12 | Vo (contrast) |
| 13 | VSS (GND) |
| 14 | VDD (+5V) |
| 15 | E2 |
| 16 | NC |
| 17 | Backlight + |
| 18 | Backlight - |
Planned features
- Morningstar-inspired function set
- Presets and banks (16 banks × 8 presets)
- Tap tempo
- Web server for preset and config editing
x0123456789012345678901234567890123456789
0 [Preset] [Preset] [Preset] [Preset]
1
2
3 [Preset] [Preset] [Preset] [Preset]Parts
103| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | 100n | Capacitor_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm | C2, C3, C6, C7, C8, C9, C10, C11, C12, C13, C14, C15, C18, C19 |
| 10 | 1N4148 | Diode_THT:D_T-1_P5.08mm_Horizontal | D11, D12, D13, D14, D15, D16, D17, D18, D19, D20 |
| 9 | WS2812B | midilord:APA106 | D3, D4, D5, D6, D7, D8, D9, D10, D21 |
| 8 | FS | midilord:Footswitch | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 |
| 7 | 220R | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1, R3, R4, R5, R6, R7, R8 |
| 4 | 2.2K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R19, R20, R21, R22 |
| 3 | 10K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R15, R16, R17 |
| 2 | 10n | Capacitor_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm | C16, C17 |
| 2 | 22R | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R13, R14 |
| 2 | 2N3904 | Package_TO_SOT_THT:TO-92_Inline_Wide | Q3, Q4 |
| 2 | 4.7K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R9, R10 |
| 2 | 5.1K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R11, R12 |
| 2 | G5V-1 | Relay_THT:Relay_SPDT_Omron_G5V-1 | K1, K2 |
| 2 | LOGO | midilord:emaj | G***, G*** |
| 1 | 100u | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C4 |
| 1 | 10K | Potentiometer_THT:Potentiometer_Bourns_3296Y_Vertical | RV1 |
| 1 | 1K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R2 |
| 1 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1 |
| 1 | 1N5822 | Diode_THT:D_DO-201AD_P15.24mm_Horizontal | D2 |
| 1 | 220u | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C5 |
| 1 | 330u | Capacitor_THT:CP_Radial_D10.0mm_P5.00mm | C1 |
| 1 | 33uH | Inductor_THT:L_Radial_D9.5mm_P5.00mm_Fastron_07HVP | L1 |
| 1 | 6N137 | Package_DIP:DIP-8_W7.62mm | U2 |
| 1 | 74HCT04 | Package_DIP:DIP-14_W7.62mm_Socket_LongPads | U6 |
| 1 | 9V_IN | Connector_BarrelJack:BarrelJack_Horizontal | J1 |
| 1 | BOOT | Button_Switch_THT:SW_PUSH_1P1T_6x3.5mm_H5.0_APEM_MJTP1250 | SW10 |
| 1 | CONTRAST | Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm | JP9 |
| 1 | ESP32-S3-WROOM-1 | RF_Module:ESP32-S3-WROOM-1 | U3 |
| 1 | EXP/AUX IN | midilord:CK635-037 | J5 |
| 1 | LCD | midilord:4004A | J7 |
| 1 | LCD1 | Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 1 | LCD2 | Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm | JP2 |
| 1 | LCD3 | Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm | JP3 |
| 1 | LCD4 | Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm | JP4 |
| 1 | LCD5 | Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm | JP5 |
| 1 | LCD6 | Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm | JP6 |
| 1 | LCD7 | Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm | JP7 |
| 1 | LCD8 | Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm | JP8 |
| 1 | LD1117-3.3V-SOT223 | Package_TO_SOT_SMD:SOT-223 | U4 |
| 1 | LM2596S-5 | Package_TO_SOT_SMD:TO-263-5_TabPin3 | U1 |
| 1 | LOGO | midilord:lain | G*** |
| 1 | MIDI IN | midilord:DIN5_180 | J2 |
| 1 | MIDI OUT 1 | midilord:DIN5_180 | J3 |
| 1 | MIDI OUT 2/3 | midilord:CK635-037 | J9 |
| 1 | RESET | Button_Switch_THT:SW_PUSH_1P1T_6x3.5mm_H5.0_APEM_MJTP1250 | SW9 |
| 1 | SWITCHES OUT | midilord:CK635-037 | J4 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U5 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4085 | J8 |
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Questions
How big is the Core PCB?
It measures 228.6 × 129.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Core use?
103 parts, built around the ESP32-S3-WROOM-1-N8, LM2596S-5.0, 74HCT04D and USBLC6-2SC6. 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 Core KiCad files?
From the EMajesty/midilord repository on GitHub, at the commit this page was made from: the board is hardware/core/core.kicad_pcb and its schematic hardware/core/core.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Core design in my own project?
Its repository states no licence, so its author keeps all rights: ask EMajesty before reusing the design.