Comments (4)
Dynamic response of laser do not match pixel rate (feedrate)?
Things to try in no particular order:
- Do not use LB clusters, may introduce loss of positional precision. grblHAL (and all Grbl ports I am aware of) uses single precision float numbers internally that can cause errors to accumulate when relative motion is commanded.
- Reduce feedrate.
- Increase PWM frequency.
- Maxing out $398 to the max allowable value may not always be optimal.
from imxrt1062.
esattamente quello che pensavo...avevo notato un x2 (ad occhio) impostando 40000 di velocità e $398=1000, rispetto a $398=35, ma perdevo di qualità e ho subito sospettato una non sincronizzazione nel movimento, ho anche giocato con $0=2 (da $0=4) ma i tb6600 dichiarano il val.min 2.3 (ottenevo immagini fantasma sdoppiati). Per il co2 consigliano 5000 hz (l'ho impostato a 10000). Tutto questo per cercare di ottenere delle incisioni a co2 di immagini in toni di grigio ad alta velocità, mi mantengo intorno ai 20000 e penso di non andare oltre
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RF excited CO2 laser can be, IIRC, 10x+ faster (response time) than DC excited lasers. Downside is that they are a lot more expensive...
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Ho fatto alcune prove e sembra che disabilitando il LB cluster e aumentando il $398 a 100 ottengo un'incisione a scala di grigi in meno tempo alla stessa velocità impostata. Potrebbe venire in aiuto il plugin PPI laser? Se si come lo configuro? utilizzo una T41U5XBB con teensy 4.1, grazie
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