8 layers35 × 35 mm
OpenAIO
OpenDrone-hw/OpenAIO
Open-source AIO for 2-6S toothpick quads: flight controller, 4-in-1 AM32 ESC and ExpressLRS receiver, 25.5x25.5 mm.
343 parts19CERN-OHL-S-2.0
6 layers32 × 24 mm
WiFi SD Adapter
MMMZZZZ/WiFi-SD-Adapter3microSD to SD adapter card with ESP32 onboard. Allows wireless access to the microSD card without removing it from its slot. Useful for car infotainment systems.
- Size
- 32 × 24 mm
- Copper layers
- 6
- Thickness
- 0.85 mm
- Parts
- 39
- Nets
- 64
- Pads
- 197
- Tracks, vias
- 394, 104
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 4 Jan 2024
- Updated
- 19 Feb 2024
Overview
WiFi SD Adapter is an open-source printed circuit board by MMMZZZZ, from the MMMZZZZ/WiFi-SD-Adapter repository on GitHub, published under the CERN-OHL-W-2.0 licence. It is a 6-layer board of 32 × 24 mm with 39 parts on 64 nets, routed with 394 tracks and 104 vias.
It is built around the ESP32-C3, ADG3245BCPZ and 2450AT18A100E. Its parts include 11 capacitors, 8 resistors, 4 inductors, 3 connectors and 2 diodes. It belongs with the radio and wireless and interfaces and adapters boards and the ESP32 and RISC-V boards of this library.
Main components
3
ESP32-C3
QFN-32-EP(5x5)12bit 160MHz 22 3V~3.6V Others QFN-32-EP(5x5) Microcontrollers (MCU/MPU/SOC) ROHSEspressif SystemsMicrocontrollers (MCU/MPU/SOC)
ADG3245BCPZ
LFCSP-20(4x4)Level translator Output enable high-impedance LFCSP-20(4x4) Translators, Level Shifters ROHSAnalog DevicesSignal Switches, Multiplexers, Decoders
2450AT18A100E
1206-40℃~+125℃ 0.5dBi 1.3mm 1.6mm 2.4GHz 2W 3.2mm 50Ω Patch Antenna SMA 1206 Antennas ROHSJohanson DielectricsAntennas
README
README.mdWiFi SD Adapter
Description
microSD to SD adapter with an ESP32-C3 "inbetween". It allows wireless access to the microSD card without removing the SD card from its slot. It does this with two bidirectional bus switches that disconnect the microSD card from the host and connect it to the ESP32 for the duration of the wireless access.
Includes a single-sided USB C connector for programming. Might only work on a USB A host port though because it's single-sided. The single-sided is necessary to not become too thick for a USB C connector.
Gerbers, iBOM, etc. can be found in the Exported folder.
Pics
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License
This project uses third-party libraries for parts and footprints (all located in the Mouser-Parts folder) to which the following licensing information may not apply.
Copyright Max Zuidberg 2023.
This source describes Open Hardware and is licensed under the CERN-OHL-W v2 or later.
You may redistribute and modify this documentation and make products using it under the terms of the CERN-OHL-W v2 (https:/cern.ch/cern-ohl). This documentation is distributed WITHOUT ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING OF MERCHANTABILITY, SATISFACTORY QUALITY AND FITNESS FOR A PARTICULAR PURPOSE. Please see the CERN-OHL-W v2 for applicable conditions.
Source location: https://github.com/MMMZZZZ/WiFi-SD-Adapter
As per CERN-OHL-W v2 section 4.1, should You produce hardware based on these sources, You must maintain the Source Location visible on the external case of the WiFi SD Adapter or other product you make using this documentation.
Parts
39| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 100n | Capacitor_SMD:C_0603_1608Metric | C3, C5, C6, C8, C10, C11, C12 |
| 5 | 5k1 | Resistor_SMD:R_0603_1608Metric | R3, R5, R7, R8, R9 |
| 2 | 10p | Capacitor_SMD:C_0603_1608Metric | C1, C2 |
| 2 | 1k | Resistor_SMD:R_0603_1608Metric | R1, R6 |
| 2 | 2n2 | Inductor_SMD:L_0402_1005Metric | L3, L4 |
| 2 | 2n2 | Inductor_SMD:L_0603_1608Metric | L1, L2 |
| 2 | ADG3245BCPZ | SamacSys_Parts:QFN50P400X400X80-21N-D | locked, locked |
| 1 | 10u | Capacitor_SMD:C_0603_1608Metric | C7 |
| 1 | 12 | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | 1p5 | Capacitor_SMD:C_0402_1005Metric | C13 |
| 1 | 2450AT18A100E | WiFi-SD-Adapter-Footprints:2450AT18A100E | ANT1 |
| 1 | 503398-1892 | SamacSys_Parts:503398-1892 | locked |
| 1 | AP7331-33SNG-7 | SamacSys_Parts:AP733133SNG7 | locked |
| 1 | Boot | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP3 |
| 1 | Crystal_40MHz | Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm | Y1 |
| 1 | ESP32-C3 | Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.45x3.45mm | U3 |
| 1 | ESP_Power_Select | Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm | JP2 |
| 1 | LED_CAR | LED_SMD:LED_0603_1608Metric | D2 |
| 1 | LED_ESP | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | LOGO | WiFi-SD-Adapter-Footprints:GitHub-Repo_QR-Code | G*** |
| 1 | Micro_SD_Card | WiFi-SD-Adapter-Footprints:microSD_Card | J5 |
| 1 | Reset | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 1 | SD_Card | WiFi-SD-Adapter-Footprints:SD_Card | J2 |
| 1 | USB_C_Receptacle_USB2.0 | WiFi-SD-Adapter-Footprints:USB_C_PCB_Single-Side | J3 |
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Questions
How big is the WiFi SD Adapter PCB?
It measures 32 × 24 mm and has 6 copper layers, 0.85 mm thick.
What parts does the WiFi SD Adapter use?
39 parts, built around the ESP32-C3, ADG3245BCPZ and 2450AT18A100E. 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 WiFi SD Adapter KiCad files?
From the MMMZZZZ/WiFi-SD-Adapter repository on GitHub, at the commit this page was made from: the board is WiFi-SD-Adapter.kicad_pcb and its schematic WiFi-SD-Adapter.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the WiFi SD Adapter design in my own project?
Its repository publishes it under the CERN-OHL-W-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).