2 layers32 × 20 mm
2 layers53.3 × 71.1 mm
Equatorial mount
JWehle/equatorial-mountDriver board for an dual stepper motors in an equatorial mount for astrophotography.
- Size
- 53.3 × 71.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 27
- Nets
- 53
- Pads
- 278
- Tracks, vias
- 238, 83
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 5 Mar 2025
- Updated
- 18 Aug 2025
Overview
Equatorial mount is an open-source printed circuit board by JWehle, from the JWehle/equatorial-mount repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board of 53.3 × 71.1 mm with 27 parts on 53 nets, routed with 238 tracks and 83 vias.
It is built around the DRV8848PWP and SM04B-GHS-TB. Its parts include 7 capacitors, 4 resistors, 4 connectors and 2 ICs. It belongs with the robots and motor control boards and the RP2040 boards of this library.
Main components
2
DRV8848PWP
HTSSOP-16-EP-40℃~+85℃ 2 2A 4V~18V 4V~18V 900mΩ Bipolar Driver Yes HTSSOP-16-EP Stepper Motor Driver ROHSTexas InstrumentsStepper Motor Driver
SM04B-GHS-TB
SMD,P=1.25mm,卧贴-25℃~+85℃ 1 1.25mm 1A 1x4P 4 4.13mm 4.25mm 4P 50V 8.25mm Auxiliary Solder Pin GH PA9T Phosphor bronze Surface Mount, Right Angle Tin UL94V-0 White SMD,P=1.25mm,卧贴 Wire To Board Connector ROHSJSTWire To Board Connector
README
README.mdequatorial-mount
Driver board for an dual stepper motors in an equatorial mount for astrophotography.
Parts
27| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 0.2 | Resistor_SMD:R_1206_3216Metric | R5, R6, R7, R8 |
| 4 | M3 | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 4 | TestPoint | jannett_footprints:TestPoint_Keystone_5016_Vias | TP1, TP2, TP3, TP4 |
| 2 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C5, C8 |
| 2 | 10uF | Capacitor_SMD:C_1206_3216Metric | C4, C9 |
| 2 | 2.2uF | Capacitor_SMD:C_0603_1608Metric | C6, C7 |
| 2 | 2MM_01x06_Socket | Connector_PinSocket_2.00mm:PinSocket_1x06_P2.00mm_Vertical | J2, J5 |
| 2 | DRV8848 | Package_SO:TSSOP-16-1EP_4.4x5mm_P0.65mm | U3, U4 |
| 2 | SM04B-GHS-TB | Connector_JST:JST_GH_SM04B-GHS-TB_1x04-1MP_P1.25mm_Horizontal | J3, J4 |
| 1 | 100uF | Capacitor_SMD:CP_Elec_10x7.7 | C1 |
| 1 | LOGO | jannett_footprints:saturn | G*** |
| 1 | RaspberryPi_Pico | Module:RaspberryPi_Pico_Common_Unspecified | A1 |
Questions
How big is the Equatorial mount PCB?
It measures 53.3 × 71.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Equatorial mount use?
27 parts, built around the DRV8848PWP and SM04B-GHS-TB. 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 Equatorial mount KiCad files?
From the JWehle/equatorial-mount repository on GitHub, at the commit this page was made from: the board is equatorial-mount.kicad_pcb and its schematic equatorial-mount.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Equatorial mount design in my own project?
Its repository publishes it under the Apache-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).
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