Sigma Spaceship - second try
About the Sigma Spaceship - second try PCB
Sigma Spaceship - second try is an open source ESP32 PCB design by Napkin-to-Billboard, published on GitHub under the MIT license. It is a 4-layer board measuring 123 × 55 mm, with 114 components from 49 distinct parts.
Its main chip is the ESP32-S2-MINI-2, from the ESP32 family. Other key parts include the AMS1117-3.3, TLV2372, TP4056, TLV62565DBVX and LMA3722T421-OA5. By type, the board carries 42 resistors, 38 capacitors, 9 connectors, 9 diodes, 8 ICs and 4 switches.
From the project
100 Gadget Ideas - Napkin to Billboard
This directory contains firmware for the returnfrom.space showcase project. Hardware kits can be obtained from returnfrom.space.
Edit the firmware using Thonny and upload it to the boards.
- Console — RP2040 based. Configured as a USB keyboard with 16 tactile switches. Provides UART output at 115200 bps. - SEB — ESP32-S2 based. Includes drivers for an SSD1306 display, DAC and ADC sampled at 8 kHz, with UART input. - Delta — ESP32-S2 based. Similar to SEB with its own pin mappings and peripherals.
Main components on the Sigma Spaceship - second try
Sigma Spaceship - second try bill of materials (BOM)
114 components, 49 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | AMS1117-3.3 ETA1061 | DFN-6-1EP_2x2mm_P0.65mm_EP1.01x1.7mm | U1 |
| 1 | TLV2372 | SOIC-8_3.9x4.9mm_P1.27mm | U5 |
| 1 | TP4056 | SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm_ThermalVias | U6 |
| 1 | ESP32-S2-MINI-2 | ESP32-S2-MINI-1 | U9 |
| 1 | TLV62565DBVX TLV62565DBVx | SOT-23-5 | U10 |
| 1 | ~ | 2xAA | U11 |
| 1 | LMA3722T421-OA5 | LMA3722T421 | U16 |
| 1 | FM8002 | SOIC-8_3.9x4.9mm_P1.27mm | U19 |
| 1 | BC817 | SOT-23 | Q3 |
| 1 | USB_C_RECEPTACLE_USB2.0_16P USB_C_Receptacle_USB2.0_16P | USB_C_Receptacle_HCTL_HC-TYPE-C-16P-01A | J1 |
| 1 | CONN_01X08_SOCKET Conn_01x08_Socket | TE_0-1734839-8_1x08-1MP_P0.5mm_Horizontal | J2 |
| 1 | OLED | Display_128x64_096_I2C | J3 |
| 1 | CONN_02X04_ODD_EVEN Conn_02x03_Odd_Even | PinHeader_2x03_P2.54mm_Horizontal | J4 |
| 1 | CONN_02X04_ODD_EVEN Conn_02x04_Odd_Even | PinHeader_2x04_P2.54mm_Vertical | J5 |
| 1 | Conn_02x03_Odd_Even | PinHeader_2x03_P2.54mm_Horizontal | J6 |
| 1 | Conn_01x02 | Hirose_DF13-02P-1.25DS_1x02_P1.25mm_Horizontal | J7 |
| 1 | CONN_01X08_PIN Conn_01x08_Pin | PinHeader_1x08_P2.54mm_Horizontal | J19 |
| 1 | CONN_01X02 Conn_01x02 | Hirose_DF13-02P-1.25DS_1x02_P1.25mm_Horizontal | J26 |
| 1 | R_Potentiometer | Potentiometer_Runtron_RM-065_Vertical | RV4 |
| 1 | SW_SPST | SW_PUSH-12mm | SW0 |
Show 29 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | SW_SPDT_321 | SW_Slide_SPDT_Angled_CK_OS102011MA1Q | SW23 |
| 1 | BOOTSEL | SW_SPST_TL3305C | SW25 |
| 1 | RESET | SW_SPST_TL3305C | SW38 |
| 1 | TEMD7000X01 WS2812B-2020 | LED_WS2812B-2020_PLCC4_2.0x2.0mm | D1 |
| 2 | WS2812B-2020 | LED_WS2812B-2020_PLCC4_2.0x2.0mm | D2, D3 |
| 3 | WS2812B-2020 | LED_WS2812B-2020_PLCC4_2.0x2.0mm | D4, D5, D6 |
| 1 | RED | LED_0603_1608Metric | D18 |
| 1 | BLUE | LED_0603_1608Metric | D19 |
| 1 | D | D_SOD-323 | D25 |
| 1 | 2.2UH 2.2uH | L_Cenker_CKCS201610 | L1 |
| 1 | 10UH 2.2uH | L_Cenker_CKCS201610 | L2 |
| 3 | 22UF 22uF | C_0805_2012Metric | C1, C37, C44 |
| 10 | 100NF 100nF | C_0402_1005Metric | C2, C3, C4, C5, C6, C7, C8, C46 +2 |
| 1 | 22UF 100nF | C_0402_1005Metric | C9 |
| 2 | 100NF 10uF-10V | C_0603_1608Metric | C10, C12 |
| 1 | 100NF 22pF | C_0402_1005Metric | C11 |
| 2 | 1UF 10uF-10V | C_0603_1608Metric | C13, C14 |
| 3 | 100NF 100uF | CP_Elec_6.3x5.4 | C15, C16, C17 |
| 1 | 100NF 1uF | C_0402_1005Metric | C18 |
| 14 | 1UF 1uF | C_0402_1005Metric | C27, C29, C30, C31, C32, C33, C34, C42 +6 |
| 1 | 22UF 10uF-10V | C_0603_1608Metric | C41 |
| 11 | 5K1 | R_0402_1005Metric | R1, R2, R3, R61, R64, R65, R100, R101 +3 |
| 1 | 470K | R_0402_1005Metric | R4 |
| 1 | 5K1 953K | R_0402_1005Metric | R5 |
| 6 | 47K 470K | R_0402_1005Metric | R26, R27, R28, R30, R35, R36 |
| 8 | 47K | R_0402_1005Metric | R29, R31, R32, R33, R34, R59, R62, R122 |
| 7 | 1K | R_0402_1005Metric | R52, R54, R57, R58, R63, R107, R123 |
| 1 | 215K | R_0402_1005Metric | R60 |
| 7 | 27R | R_0402_1005Metric | R67, R68, R96, R97, R98, R99, R108 |
Sigma Spaceship - second try design files
The KiCad project lives in the Napkin-to-Billboard/100GI repository on GitHub; these links point at the commit this page was built from.
Sigma Spaceship - second try: common questions
What microcontroller does the Sigma Spaceship - second try use?
The Sigma Spaceship - second try is built around the ESP32-S2-MINI-2, from the ESP32 family.
How big is the Sigma Spaceship - second try PCB?
The Sigma Spaceship - second try measures 123 × 55 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Sigma Spaceship - second try?
114 components, from 49 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Sigma Spaceship - second try design files?
From the Napkin-to-Billboard/100GI repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Sigma Spaceship - second try design in my own project?
Yes, under the terms of its MIT license, which Napkin-to-Billboard chose for the repository.
Can I test firmware for the Sigma Spaceship - second try without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.
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