Homing problems

SatNOGS Software
1

Good morning all

Just need a bit of help Satnog Arduino cnc.
I have set the gear ratio so the it travels to the desired position and all works fine.
My problem is with the homing it starts the homing sequence but stops before it reaches the homing switches.
If I activate the switches before it stops it works.
Any suggestion would be welcomed.

many thanks

Peter(G4GRK)

2

Hi Peter, i have the exact same problem just wondering if you have found a solution yet. the only difference is i have designed my own pcb using an arduino nano and 2 4988 stepper drivers

3

Hi there
Still trying to find the solution when I do I will definitely let you know.
I have been working on this project for several months and the biggest problem was the latest version of gpredict wont work on my windows 10 PC keep showing ERROR when I engaged the rotator so downloaded ver 1.4 and worked first time. Everything works fine manual control using rotctl and tracks satellites no problem.

Best regards

Peter

4

Hi Peter, that would be much appreciated and i will do the same if i find the answer first. i have been working on this rotator for just over a year apart from the motors, switches, bearings and electronics it is all 3D printed and measures 155mm X 100mm x 90mm roughly. everything is ready to be put out as a free set of plans for anyone to make once this final problem has been solved i hope i don’t fall at the last hurdle! from what i have found out so far its all to do with the relationship between the motor stepping and the home delay time. i don’t know if you are a programmer but if you are and would like more detail if you would please let me know

5

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Good morning
Still working on the problem it homes perfectly when I press the reset on the arduino but don’t make it home when it finishes a track.
Have attached a photo of my effort in testing and calibration position. Coming from an engineering and electronic back ground I decided to redesign using belt drive and machined alluminum bearing brackets.
After a few adjustments to gear ratio and speed it workes perfectly apart from the homing issue. Will let you know when I find the problem.

best regards

Peter (G4GRK)

6

Hi Peter, very nice build i have sent you an email