Single USB azimuth rotator interface 4

USB interface replace original control box (directly connect to motor and azimuth potentiometer), and create usb interface for RemoteQTH server web interface running on Raspberry PI. Example

New rev.4 features

• Independent power GND
• Support two wire or grounded center azimuth potentiometer
• Support ten turn potentiometer
• Support cw/ccw pulse inputs
• Compact small smd layout
• Better mechanical assembly with 3d print parts
• Robust usb-B connector
• Support PWM start/stop with DC power (optional)

The rotator unit, based on arduino (code by K3NG) contains:

• LCD.
• Lighting button (CW, CCW, Start).
• Preset encoder.
• Three relay (CW, CCW and Brake).
• Arduino nano module.
• Two PCB shield.

Main functions:

• Operate independently, but can be controlled from a PC
• Ready for AC and DC rotators.
• Analog input - three-wire potentiometer (voltage divider)
• Azimuth only.
• 5V power voltage.
• Size 5 x 10 x 5 cm (2 x 4 x 2 inch).

Schematics rev.4

Schematics rev.3

Unit rev.3 test:

Download

PCB
v4.0.3	Schematics.PDF2022	iBom.html	3D model.step1037		KiCad.zip998
v3.3	sch	front.brd	back.brd	pcb [8MB]	kicad2499
v3.2	sch	front.brd	back.brd		kicad723
v3.1	sch	front.brd	back.brd		kicad758
v2 lcd	pcb	sch			eagle753
v2 base	pcb	sch			eagle708
Enclosure
Single box v1			full.DXF709	DXF602	PDF841
Front panel design (inkscape)			svg
3D model rev.4
LCD	OpenScad1204	.stl1165	.3mf1036	3D preview
Knob	OpenScad1181	.stl1105		3D preview
Open-Hardware
We believe open source is a better way of doing things. View and download the Shield Schematic and PCB Kicad/Eagle CAD files, LibreCAD .DXF, or Inkscape .SVG files. The hardware designs are released under the Creative Commons Attribution-ShareAlike 4.0 International License

Photos from users

ES6QC	DM2RM	DM2RM
DH6YMC	F4EGA	SV2CLJ
F4EGA	OH3BHX	IU3BTY