2 layers27.9 × 40.6 mm
Tracker
AndreasFMueller/Tracker
astronomical tracker device for long exposure photographs with a simple camera
16 parts
2 layers61 × 41.3 mm
Focuser
AndreasFMueller/FocuserThe motor focus driver from starizona is quite feature complete, more so than many other devices, but it is very large and heavy.
- Size
- 61 × 41.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 24
- Nets
- 37
- Pads
- 115
- Tracks, vias
- 314, 17
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 3
- Created
- 16 Jan 2016
- Updated
- 6 Sep 2019
Overview
Focuser is an open-source printed circuit board by AndreasFMueller, from the AndreasFMueller/Focuser repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 61 × 41.3 mm with 24 parts on 37 nets, routed with 314 tracks and 17 vias.
It is built around the A4988 and MC78L05ABD. Its parts include 6 capacitors, 6 resistors, 4 ICs, 4 connectors and 2 diodes. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2A4988
UncategorisedALLEGRO
MC78L05ABD
SOIC-8-40℃~+125℃@(Tj) 1 1.7V@(40mA) 100mA 30V 40uV 49dB@(120Hz) 5V 6mA Fixed Over Current Protection、Over Temperature Protection、Short Circuit Protection Positive SOIC-8 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSonsemiVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdFocuser
The motor focus driver from starizona is quite feature complete, more so than many other devices, but it is very large and heavy. Also it is not possible to actuate the focuser without grabbing the device, a wireless solution would be preferable. The present project solves this problem.
Parts
24| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 0.1u | SM0603_Capa | C1, C6 |
| 2 | 22 | SM0603 | R1, R2 |
| 2 | 22p | SM0603_Capa | C4, C5 |
| 2 | LED | LED-3MM | D1, D2 |
| 1 | 0.33u | c_tant_A | C2 |
| 1 | 1k | SM0603 | R4 |
| 1 | 1u | SM0603_Capa | C3 |
| 1 | 220k | SM0603 | R3 |
| 1 | 2k | SM0603 | R6 |
| 1 | 610 | SM0603 | R5 |
| 1 | 8MHz | Q_49U3HMS | X1 |
| 1 | A4988 | A4988 | U1 |
| 1 | AT90USB162-A | TQFP32 | IC1 |
| 1 | IRML9301TFPbF | SOT23GDS | Q1 |
| 1 | ISP | pin_array_3x2 | P3 |
| 1 | MC78L05A | so-8 | U2 |
| 1 | Motor | PIN_ARRAY_4x1 | P2 |
| 1 | Power | PIN_ARRAY_2X1 | P1 |
| 1 | RECEIVER | Receiver | U3 |
| 1 | USB | USB_B | J1 |
Questions
How big is the Focuser PCB?
It measures 61 × 41.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Focuser use?
24 parts, built around the A4988 and MC78L05ABD. 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 Focuser KiCad files?
From the AndreasFMueller/Focuser repository on GitHub, at the commit this page was made from: the board is hardware/focuser.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Focuser design in my own project?
Its repository publishes it under the GPL-3.0 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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