Atlas FLI replacement focuser board

Ongoing

STD Atlas FLI replacement focuser board

Arduino

Motor_Drive_Module

License: Public Domain

Mode:

Editors' pick

Cloned from focus copy

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

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Sheet_1 copy copy
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PCB

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V3
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BOM

BOM download Purchase Parts

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