Servo motion recorder and playback

[Acetronics2]

Are there any simular threads out there? Is it a simple as a loop with a input value? I imagine I will need more memory ,is there a eeprom or sd card tutorial or thread out there? Thank You for your time.

Hi, Snap

I do not remember any similar dataloggers here ... moreover with the "Replay " function

Very simple , for the principle ...

Servos are driven with a " pulsout " command ... you just need to memorize the pulse duration every, say 35 to 100 ms ... 8 bits is enough ...

4 mins = 28 x 60 x 4 = 6720 samples @ 8 bits ...

so, a 64K I2C memory is enough here ( 10 ms writing delay per sample ...) , processor can be as simple as a 16F628 ...

could even fit into a 18F2620 chip ... with its 64k Prog memory...

SD Card is overkill ... until you want to have many " programs " to play ...

Alain