2 layers26.3 × 18 mm
Usb daughter
ajackson2681/codex
The Codex is an attempt at an open-source, distraction-free writing device inspired somewhat by the AlphaSmart Neo (at least the display was).
6 parts1GPL-3.0
2 layers
EEG ESP
ashvin-verma/BigBrainFinalFinal Project for HOPE Fall '22. Low-cost EEG with 4 inputs and filtering.
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 43
- Nets
- 69
- Pads
- 197
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 6 (file 20211014)
- Created
- 3 May 2024
- Updated
- 3 May 2024
Overview
EEG ESP is an open-source printed circuit board by ashvin-verma, from the ashvin-verma/BigBrainFinal repository on GitHub. It is a 2-layer board with 43 parts on 69 nets.
It is built around the AD8221ARZ, ESP32-S2-SOLO-N8 and CA3130E, with the USB-A1VSB6 among its other parts. Its parts include 15 capacitors, 14 resistors, 7 ICs, 3 connectors and 2 switches. It belongs with the ESP32 boards of this library.
Main components
4
AD8221ARZ
SOIC-8-18V~-2.3V、2.3V~18V -40℃~+125℃ 0.03% 1 10us 18mA 1V/V~1000V/V 1mA 1pA/℃ 200pA 2V/us 400nV/℃ 500pA 60uV 80dB 825kHz 8nV/√Hz@1kHz 90dB External resistor gain、EMI filtering/RF suppression SOIC-8 Instrumentation Amplifiers ROHSAnalog DevicesInstrumentation Amplifiers
ESP32-S2-SOLO-N8
-- WiFi Modules ROHSEspressif SystemsWiFi Modules
CA3130E
PDIP-8-55℃~+125℃ 0.5pA 10mA 10uV/℃ 30V/us 45mA 5pA 8mV 90dB Enable/shutdown function、Built-in compensation Rail-to-rail output PDIP-8 Operational AmplifierRenesas ElectronicsOperational Amplifier
USB-A1VSB6
插件-40℃~+105℃ 1 1.5A 30V 4P Black Female Through Hole Type-A 插件 USB Connectors ROHSOn-Shore TechUSB Connectors
Parts
43| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 10 uF | Capacitor_SMD:C_0603_1608Metric | C2, C3, C11, C19 |
| 4 | 10K | Resistor_SMD:R_0603_1608Metric | R5, R6, R7, R12 |
| 4 | 15K | Resistor_SMD:R_0603_1608Metric | R2, R3, R4, R13 |
| 4 | 1M | Resistor_SMD:R_0603_1608Metric | R8, R9, R10, R11 |
| 3 | 0.01 uF | Capacitor_SMD:C_0603_1608Metric | C12, C14, C21 |
| 3 | 0.1 uF | Capacitor_SMD:C_0603_1608Metric | C7, C10, C13 |
| 3 | CA3130 | Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm | U3, U4, U10 |
| 2 | 0.0068 uF | Capacitor_SMD:C_0603_1608Metric | C9, C17 |
| 2 | 0.68 uF | Capacitor_SMD:C_0603_1608Metric | C8, C18 |
| 2 | 2K2 | Resistor_SMD:R_0603_1608Metric | R1, R14 |
| 2 | AD8221ARZ | AD8221ARZ:SOIC127P600X175-8N | U1, U6 |
| 2 | Conn_01x03_Male | 61300311121:61300311121 | J1, J4 |
| 2 | R_Potentiometer_Trim | Potentiometer_SMD:Potentiometer_Bourns_3314G_Vertical | RV1, RV2 |
| 2 | SW_Push | footprints-switch:ESB-33535A | SW1, SW2 |
| 1 | 1 uF | Capacitor_SMD:C_0603_1608Metric | C6 |
| 1 | AP2127N-3.3 | ap2127:SOT91P240X110-3N | U2 |
| 1 | ESP32-S2-SOLO | Espressif:ESP32-S2-SOLO | U5 |
| 1 | USB-A1VSB6 | USB-A1VSB6:ONSHORE_USB-A1VSB6 | J2 |
Questions
What parts does the EEG ESP use?
43 parts, built around the AD8221ARZ, ESP32-S2-SOLO-N8, CA3130E and USB-A1VSB6. 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 EEG ESP KiCad files?
From the ashvin-verma/BigBrainFinal repository on GitHub, at the commit this page was made from: the board is EEG_ESP4/EEG_ESP.kicad_pcb and its schematic EEG_ESP4/EEG_ESP.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the EEG ESP design in my own project?
Its repository states no licence, so its author keeps all rights: ask ashvin-verma before reusing the design.
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