4 layers100 × 72 mm
FLEADiP
dennowiggle/FLEADiP
FLEADiP is a compatiable add-on board for the Z80 Retro! project
226 parts2LGPL-2.1
4 layers100 × 79 mm
ESP32 Interface
dennowiggle/ESP32_Interface1Facilitate learning the Z80 Retro! hardware and software.
- Size
- 100 × 79 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 114
- Nets
- 176
- Pads
- 584
- Tracks, vias
- 1,888, 245
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 31 Jul 2023
- Updated
- 4 Jan 2026
Overview
ESP32 Interface is an open-source printed circuit board by dennowiggle, from the dennowiggle/ESP32_Interface repository on GitHub, published under the LGPL-2.1 licence. It is a 4-layer board of 100 × 79 mm with 114 parts on 176 nets, routed with 1,888 tracks and 245 vias.
It is built around the SN74LVC1G125DBVR-TP, SN74LS244N and ESP32-S3-DEVKITC-1-N8R2, with the ICL3232CPZ, MEM2075-00-140-01-A and SN74S138AN among its other parts. Its parts include 37 capacitors, 29 resistors, 17 ICs, 13 connectors and 4 transistors. It belongs with the retro computing and games and interfaces and adapters boards and the ESP32 boards of this library.
Main components
12
SN74LVC1G125DBVR-TP
SOT-23-5-40℃~+125℃ 1 1.65V~5.5V 2.6ns@5.0V,50pF 24mA 24mA 2uA 74LVC Tri-State Unidirectional SOT-23-5 Buffers, Drivers, Receivers, Transceivers ROHSTECH PUBLICBuffers, Drivers, Receivers, Transceivers
SN74LS244N
DIP-200℃~+70℃ 12ns@5V,45pF 15mA 2 24mA 4 4.75V~5.25V 54mA 74LS Output enable、Level shifting Schmitt trigger Tri-State Unidirectional DIP-20 Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, TransceiversESP32-S3-DEVKITC-1-N8R2
-- WiFi Modules ROHSEspressif SystemsWiFi Modules
ICL3232CPZ
PDIP-160.3mA 0℃~+70℃ 2 2 250Kbps 3V~5.5V Transceiver Yes ±15kV PDIP-16 RS232 ICs ROHSRenesas ElectronicsRS232 ICsMEM2075-00-140-01-A
SMD1.4mm MicroSD Card (TF Card) Push-Push SMD SD Card / Memory Card Connector ROHSGlobal Connector Technology (GCT)SD Card / Memory Card ConnectorSN74S138AN
PDIP-160℃~+70℃ 4.75V~5.25V 400uA 74S 8mA Single Supply PDIP-16 Signal Switches, Multiplexers, Decoders ROHSTexas InstrumentsSignal Switches, Multiplexers, Decoders
MCP23S17-E/SP
DIP-28-40℃~+125℃ 1.8V~5.5V 10MHz 16 Interrupt Output Reset function、Cascading and address extension SPI DIP-28 I/O Expanders ROHSMicrochip TechnologyI/O ExpandersCD74HC374E
PDIP-20-55℃~+125℃ 1 10pF 28ns@6V,50pF 2V~6V 60MHz 7.8mA 7.8mA 74HC Series 8 8uA D-Type Rising Edge PDIP-20 Flip Flops ROHSTexas InstrumentsFlip FlopsSN74LVC245AN
DIP-20UncategorisedTexas Instruments
NCP1117LPST33T3G-MS
SOT-223-20℃~+125℃@(Ta) 1 1.4V@(1A) 12mA 15V 1A 3.235V~3.365V Fixed Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMSKSEMIVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsSN74LVC1G04DBVR
SOT-23-5-40℃~+125℃ 1 1 1.2V、1.9V、2.2V、2.3V、3.8V 1.65V~5.5V 100mV、300mV、400mV、450mV、550mV 10uA 24mA 24mA 74LVC 7ns@5V,50pF SOT-23-5 Inverters ROHSTECH PUBLICLogic Gates
CL21A106KOQNNNG
080510uF 16V X5R ±10% 0805 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSSamsung Electro-MechanicsMultilayer Ceramic Capacitors MLCC - SMD/SMT
README
kicad/README.mdESP32_Interface
Facilitate learning the Z80 Retro! hardware and software.
Description
This project adds a WiFi interface to the Z80 Retro! It has been used to facilitate telnet to the Z80 serial port, and programming the Z80 Retro! Flash memory via serial or telnet xmodem or a web interface.
Top View
Bottom View
ESP32 Interface Board Rev 1.0 Release Notes
-
The 'output' directory contains the BOM, netlist, and PDF schematic.
-
Board design used KiCad 7.0.2.
-
Silkscreen box on back side should extend around R501.
-
Holes for U505, the ESP32 module, are tight but it is possible to fit the module in. Larger pin holes would be preferred.
Parts
114| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | 100nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C101, C204, C205, C403, C404, C405, C406, C501, C503, C504, C505, C506, C507, C509, C510, C512 +2 |
| 14 | 10K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R301, R302, R303, R308, R309, R501, R502, R503, R504, R507, R511, R516, R517, R518 |
| 10 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C203, C206, C210, C301, C303, C305, C401, C502, C511, C513 |
| 8 | 100n | Capacitor_THT:C_Disc_D3.8mm_W2.6mm_P2.50mm | C201, C202, C207, C208, C209, C302, C304, C402 |
| 7 | 33R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R306, R307, R505, R506, R508, R509, R510 |
| 5 | MountingHole | MountingHole:MountingHole_2.7mm_M2.5_DIN965 | H1, H2, H3, H4, H5 |
| 4 | Conn_01x01 | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | J101, J102, J103, J104 |
| 4 | PN2222 | Package_TO_SOT_THT:TO-92L | Q201, Q301, Q302, Q303 |
| 4 | SN74LVC1G125DBVR | Package_TO_SOT_SMD:SOT-23-5_HandSoldering | U501, U503, U508, U509 |
| 3 | 1K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R102, R201, R305 |
| 2 | 0R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R512, R513 |
| 2 | 10K | Resistor_THT:R_Array_SIP9 | RN201, RN202 |
| 2 | 74LS138 | Package_DIP:DIP-16_W7.62mm_Socket | U201, U202 |
| 2 | Conn_02x03 | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J402, J404 |
| 2 | DB9_Male_MountingHoles | Connector_Dsub:DSUB-9_Male_Horizontal_P2.77x2.84mm_EdgePinOffset7.70mm_Housed_MountingHolesOffset9.12mm | J401, J403 |
| 2 | DNL | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R514, R515 |
| 2 | Logo_Open_Hardware_Small | Symbol:OSHW-Logo_7.5x8mm_SilkScreen | LOGO10, LOGO11 |
| 2 | MCP23S17_SP | Package_DIP:DIP-28_W7.62mm_Socket | U301, U302 |
| 2 | SN74LVC8T245DBR | Package_SO:SSOP-24_5.3x8.2mm_P0.65mm | U502, U504 |
| 1 | 1-1825027-2 | Button_Switch_THT:SW_Tactile_SPST_Angled_PTS645Vx83-2LFS | S501 |
| 1 | 1825027-8 | Button_Switch_THT:SW_Tactile_SPST_Angled_PTS645Vx83-2LFS | S502 |
| 1 | 1825910-6 | digikey-footprints:Switch_Tactile_THT_6x6mm | S301 |
| 1 | 47K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R304 |
| 1 | 74HC374 | Package_DIP:DIP-20_W7.62mm_Socket | U204 |
| 1 | 74LS244 | Package_DIP:DIP-20_W7.62mm_Socket | U205 |
| 1 | 74LVC245A | Package_DIP:DIP-20_W7.62mm_Socket | U206 |
| 1 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J202 |
| 1 | Conn_02x05 | Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_Vertical | J503 |
| 1 | Conn_02x20_Counter_Clockwise | WTM_Library:PinSocket_2x20_P2.54mm_Vertical_clockwise | J2 |
| 1 | DNL | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C508 |
| 1 | ESP32-S3-DevKitC | WTM_Library:ESP32-S3-DevKitC | U505 |
| 1 | GCT_MEM2075-00-140-01-A_DP | WTM_Library:GCT_MEM2075-00-140-01-A | J501 |
| 1 | ICL3232CPZ | Package_DIP:DIP-16_W7.62mm_Socket | U401 |
| 1 | LTST-C170KGKT | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D102 |
| 1 | NCP1117LPST33T3G | Package_TO_SOT_SMD:SOT-223 | U203 |
| 1 | SA5.0A | Diode_THT:D_DO-15_P12.70mm_Horizontal | Z201 |
| 1 | SN74LVC1G04DBVR | Package_TO_SOT_SMD:SOT-23-5_HandSoldering | U101 |
| 1 | USB_B_Micro | Connector_USB:USB_Micro-B_Wuerth_629105150521 | J502 |
Questions
How big is the ESP32 Interface PCB?
It measures 100 × 79 mm and has 4 copper layers, 1.6 mm thick.
What parts does the ESP32 Interface use?
114 parts, built around the SN74LVC1G125DBVR-TP, SN74LS244N, ESP32-S3-DEVKITC-1-N8R2 and ICL3232CPZ. 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 ESP32 Interface KiCad files?
From the dennowiggle/ESP32_Interface repository on GitHub, at the commit this page was made from: the board is kicad/ESP32_Interface.kicad_pcb and its schematic kicad/ESP32.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the ESP32 Interface design in my own project?
Its repository publishes it under the LGPL-2.1 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
Similar boards
- 4 layers290 × 215 mm
- 2 layers76.2 × 83.8 mm
Neotron Expansion Template
Neotron-Compute/Neotron-Expansion-Template
Example Neotron Expansion card
28 parts1 - 4 layers85.3 × 78 mm
2067-Z8S180
dennowiggle/Z8S180-WTM
Repository for sharing Z8S180-WTM design changes only. A private repository.
53 parts1LGPL-2.1 - 2 layers281 × 79 mm
- 4 layers100 × 100 mm
- 2 layers50.8 × 38.1 mm
Lk201
pkoning2/lk201emu
Emulate DEC LK201 keyboard using a standard PC USB keyboard
19 parts56BSD-2-Clause - 2 layers65 × 56 mm
Rpi simplex clock hat
hharte/rpi-simplex-clock-hat
Raspberry Pi Hat to control a Simplex synchronous clock.
26 parts1MIT