CelestialSync
About the CelestialSync PCB
CelestialSync is an open source ESP8266 PCB design by davidfobar, published on GitHub. It is a 2-layer board measuring 107 × 52 mm, with 70 components from 33 distinct parts.
Its main chip is the ESP-12F, from the ESP8266 family. Other key parts include the TPD2EUSB30, W25Q32JVSS, CAM-M8Q-0, LSM303AGR and STM32L412CBUx. By type, the board carries 19 resistors, 14 ICs, 14 connectors, 13 capacitors, 4 transistors and 2 diodes.
From the project
This an telescope mount controller inspired by OnStep and OpenAstroTracker, but written OOP to be maintainable.
Main components on the CelestialSync
CelestialSync bill of materials (BOM)
70 components, 33 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TPD2EUSB30 | Texas_DRT-3 | U1 |
| 1 | W25Q32JVSS | SOIC-8_5.23x5.23mm_P1.27mm | U2 |
| 1 | CAM-M8Q-0 | LCC100P960X1400X210-31N | U3 |
| 1 | LSM303AGR | lsm303_handsolder | U4 |
| 1 | STM32L412CBUx | HandSolder QFN-48 | U5 |
| 1 | ESP-12F | ESP-12E | U6 |
| 1 | AP63203WU | TSOT-23-6 | U7 |
| 1 | AP2112K-3.3 | SOT-23-5 | U8 |
| 1 | Si7021-A20 | DFN-6-1EP_3x3mm_P1mm_EP1.5x2.4mm | U9 |
| 1 | BMP390L | bmp390_handsolder | U10 |
| 3 | ~ | TMC5160T | U11, U12, U13 |
| 1 | ~ | LM2569_module | U14 |
| 4 | A03400A | SOT-23 | Q1, Q2, Q3, Q4 |
| 1 | UJ20-C-H-G-MSMT-1-P16-TR | SAMESKY_UJ20-C-H-G-MSMT-1-P16-TR | J1 |
| 1 | Conn_02x05_Top_Bottom | STLINK-V3MINIE | J2 |
| 1 | Barrel_Jack_Switch | BarrelJack_Wuerth_6941xx301002 | J3 |
| 6 | Conn_01x04_Pin | JST_PH_B4B-PH-K_1x04_P2.00mm_Vertical | J4, J5, J6, J11, J12, J13 |
| 5 | Conn_01x02_Pin | JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | J7, J8, J9, J10, J14 |
| 2 | SW_Push | SW_SPST_PTS810 | BOOT1, RESET1 |
| 1 | Thermistor_NTC | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | TH1 |
Show 13 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | SMF5V0A | D_SMF | D1 |
| 1 | SMBJ33A | D_SMB_Handsoldering | D2 |
| 1 | 4.7uH | L_0805_2012Metric_Pad1.15x1.40mm_HandSolder | L1 |
| 5 | 1u | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C1, C2, C3, C5, C7 |
| 1 | 220n | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C4 |
| 1 | 10u | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C6 |
| 2 | 100n | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C8, C9 |
| 1 | 47uF | C_2220_5750Metric_Pad1.97x5.40mm_HandSolder | C10 |
| 3 | 100uF | C_2220_5750Metric_Pad1.97x5.40mm_HandSolder | C11, C12, C13 |
| 2 | 5.1k | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R1, R2 |
| 7 | 10k | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R3, R8, R9, R12, R13, R14, R15 |
| 6 | 1k | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R4, R5, R6, R7, R10, R11 |
| 4 | 200 | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R16, R17, R18, R19 |
CelestialSync design files
The KiCad project lives in the davidfobar/CelestialSync repository on GitHub; these links point at the commit this page was built from.
CelestialSync: common questions
What microcontroller does the CelestialSync use?
The CelestialSync is built around the ESP-12F, from the ESP8266 family.
How big is the CelestialSync PCB?
The CelestialSync measures 107 × 52 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the CelestialSync?
70 components, from 33 distinct parts. The full bill of materials is listed on this page.
Where can I download the CelestialSync design files?
From the davidfobar/CelestialSync repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the CelestialSync design in my own project?
The repository has no license, so all rights stay with davidfobar. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the CelestialSync without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP8266 firmware against it before you order a PCB.
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