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STD Atlas FLI replacement focuser board

License: Public Domain

Mode: Editors' pick

Cloned from focus copy

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Update time: 2024-07-01 06:24:39
Creation time: 2023-09-15 09:37:10
Description

This project is a replacement board for FLI Atlas focusser for telescopes.

When you order the PCB, do not order the 100µf capacitor (the one there is not the right one), do not order the RST connector nor the attiny. These will have to come separately.

contact me at cyrille.de.brebisson@gmail.com to get the rest of the how to and the SW files...

Design Drawing
schematic diagram
1 /
PCB
1 /
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ID Name Designator Footprint Quantity
1 4.7u C1 C_0805_HANDSOLDERING 1
2 0.1u C2 C_0805_HANDSOLDERING 1
3 0.22u C3 C0805 1
4 0.1u C5,C11,C12 1206 3
5 100uF C9 CAP-TH_BD8.0-P3.50-D0.6-FD 1
6 EDZVT2R3.6B D4,D5 SOD-523_L1.2-W0.8-LS1.6-RD 2
7 DC-005B-2.5A-2.0 DC DC-IN-TH_DC-005-20A-1 1
8 HDR-M-2.54_1x4 MOT HDR-M-2.54_1X4 1
9 7805(SOT-89) PWR SOT-89-3_L4.5-W2.5-P1.50-LS4.2-BR 1
10 68 R1 0805 1
11 68 R2 D_0805 1
12 1k5 R3 0805 1
13 1k R4 0805 1
14 10k R5,R7 0805 2
15 10k R6 RES-ADJ-SMD_VG039NCH 1 https://lcsc.com/eda_search?q=C128548&%26type=1&ref=editor
16 100k R8 0805 1
17 3k9 R10 0805 1
18 0.05 R11,R12 R0805 2
19 HDR-M-2.54_1x2 RST HDR-M-2.54_1X2 1
20 ATTINY85-20SU TINY SOIC-8_208MIL 1
21 switch U1 R2512 1 https://atta.szlcsc.comnull
22 A4988SETTR-T U3 WQFN-28_L5.0-W5.0-P0.50-BL-EP3.2 1 https://lcsc.com/eda_search?q=C38437&%26type=1&ref=editor
23 670688000 USB2 USB-B-TH_67068-8000 1 https://lcsc.com/eda_search?q=C114097&%26type=1&ref=editor

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