# RC1001 galvo head questions **URL:** \ **Category:** Uncategorized\ **Created:** [December 10, 2023, 7:04pm UTC](https://forum.cloudray.com/t/rc1001-galvo-head-questions/1377 "2023-12-10T19:04:06Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![guachipelintree](https://avatars.discourse-cdn.com/v4/letter/g/7c8e57/32.png) [@guachipelintree](https://forum.cloudray.com/u/guachipelintree)\ **Post date:** [December 10, 2023, 7:04pm UTC](https://forum.cloudray.com/t/rc1001-galvo-head-questions/1377/1 "2023-12-10T19:04:06Z")
Hello, I bought an RC1001 galvo head sn 2023075968 from you guys. Reason for buying is to position a laser pointer quickly. Now you have on your site a schematic of the db25 connector with the different signals that are needed. This schematic points to XY2-100 interface. Now I don;t need to use this head as a marking laser. Only need it for positioning a pointer to a given precise coordinate. For this reason I read up on the XY2-100 and XY2-100-E interface, or whatever I could find on the internet, and that is not much. There is one document from raylase that gives some specifications on the different signals. I was able to reproduce the signals exactly as ‘supposedly’ needed to get the mirrors to move, but they will never move. I have many questions, but my first couple of questions are about the info I can;t find. I try to use 16 bit command positioning frames, because I don;t think I need 18 bit command positioning frames. questions: 1 Does the RC1001 accept 16 bit positioning type frames? 2 Even so I am curious to know… Does the RC1001 accept 18 bit positioning frames? 3 Do I need to initialize the RC1001 with one or more command frames before sending positioning frames? 4 I see that the protocol recommends 2MHz as the clockpulse. I provide 250kHz clock, because I don;t think I need all that speed at all. 5 positions per second would be enough for me. Would 250khz clockfequency be a problem for the RC1001? 5 Does rc1001 provide feedbackframes? It does not appear so. I don;t think it is a problem for me though. i just need it to position where I tell it. 6 Does the RC1001 inpout signals need to comply with lsttl 5V levels or can lvttl 3.3V levels be enough? I understand that inside the RC1001 there are line receivers, and from experience they would react fine to 3.3V, but my question is: what is the spec? 7. Is there a manual detailing more specific communication protocol details? Thank you very much for the answers. ---
**Author:** ![guachipelintree](https://avatars.discourse-cdn.com/v4/letter/g/7c8e57/32.png) [@guachipelintree](https://forum.cloudray.com/u/guachipelintree)\ **Post date:** [December 16, 2023, 10:42pm UTC](https://forum.cloudray.com/t/rc1001-galvo-head-questions/1377/2 "2023-12-16T22:42:25Z")
It works now. Solution is to connect all the - inputs to a 0.7volts DC created by a diode and a resistor. ---
**Author:** ![rahularepaka](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.cloudray.com/rahularepaka/32/857_2.png) [@rahularepaka](https://forum.cloudray.com/u/rahularepaka)\ **Post date:** [July 22, 2024, 4:36pm UTC](https://forum.cloudray.com/t/rc1001-galvo-head-questions/1377/3 "2024-07-22T16:36:39Z")
Hi, I would like to control it via Arduino Mega. Any idea how to control it? ![IMG_1250](https://us1.discourse-cdn.com/flex020/uploads/cloudray/original/1X/51b2082d45604ab48051372bb00ce8188c4a680d.jpeg)