Search found 64 matches
- Sun Jun 13, 2021 3:29 am
- Forum: Centroid Acorn CNC Controller
- Topic: Sain Smart 8 Relay Board
- Replies: 8
- Views: 2619
Re: Sain Smart 8 Relay Board
Fractional horsepower and above motors require a contactor, as you have found out, you will blow up the onboard relays. https://centroidcncforum.com/viewtopic.php?t=4929 Gary, the post you link to: do you have any centroid versions left to sell? Also, how did you manage to get so many relay boards ...
- Sun Jun 13, 2021 3:25 am
- Forum: Centroid Acorn CNC Controller
- Topic: Sain Smart 8 Relay Board
- Replies: 8
- Views: 2619
Re: Sain Smart 8 Relay Board
Yup, figured out the hard way. 24VDC supply to the driver of a 100w BLDC motor for a small grinder motor (not my spindle motor). Did my maths and got 4.2A so I thought that I was safe (10A max on the relay) - didn’t account for the current surge, basics, doh! I have re-wired and it now works great b...
- Sat Jun 12, 2021 11:53 am
- Forum: Centroid Acorn CNC Controller
- Topic: Sain Smart 8 Relay Board
- Replies: 8
- Views: 2619
Re: Sain Smart 8 Relay Board
I tried to use the relay to switch on a BLDC motor driver which switch on using centroid then wouldn’t switch off. On investigation, I found that the relay would no longer switch. I thought that it was a faulty relay so moved to another relay and the same happened. It was the driver damaging them. T...
- Sat Jun 12, 2021 9:14 am
- Forum: Centroid Acorn CNC Controller
- Topic: Sain Smart 8 Relay Board
- Replies: 8
- Views: 2619
Sain Smart 8 Relay Board
Does anyone know where I can find the exact relay board that centroid use. I have and acorn and Ether1616, all 3 relay boards are identical, however, I have blown 2 individual relays. I tried to desolder the relays to replace the components but they don't want to come off. I have found plenty of sai...
- Thu Dec 24, 2020 2:22 pm
- Forum: Centroid Acorn CNC Controller
- Topic: Wishing you all Happy Holidays!
- Replies: 3
- Views: 2042
Re: Wishing you all Happy Holidays!
Merry Christmas! Thank you for your support Marty, and everyone else too! bring on 2021.
- Tue Dec 08, 2020 6:13 pm
- Forum: Centroid Acorn CNC Controller
- Topic: Lathe Threading - Spindle & Axis Sync (Resolved)
- Replies: 28
- Views: 9937
Re: Lathe Threading - Spindle & Axis Sync
Thank you all! I can confirm that all is working correctly now. It was down to that pesky extra tooth that sneaked in on one of my pulleys. From now on, I’m counting every tooth on every pulley that I use!
(If anyone in the UK is looking for an encoder, I have 3 lying around that I don’t need)
(If anyone in the UK is looking for an encoder, I have 3 lying around that I don’t need)
- Sat Dec 05, 2020 7:33 am
- Forum: Centroid Acorn CNC Controller
- Topic: Lathe Threading - Spindle & Axis Sync (Resolved)
- Replies: 28
- Views: 9937
Re: Lathe Threading - Spindle & Axis Sync
Thank you gents for the suggestions, because of your recommendations, I believe that I have identified the issue: Having checked the PID screen, the pulse is good at every 4096 counts, however, having looked closely, it wasn't spot on with a single revolution (by eye it seemed to be ok but when usin...
- Fri Dec 04, 2020 6:33 pm
- Forum: Centroid Acorn CNC Controller
- Topic: Lathe Threading - Spindle & Axis Sync (Resolved)
- Replies: 28
- Views: 9937
Re: Lathe Threading - Spindle & Axis Sync
Yes, 5mm pitch on each axis. Dimensions of parts produced are all spot on, also use the same settings when in mill mode. Steps per rev is correct. Backlash is more than I like but accurate.
- Fri Dec 04, 2020 6:07 pm
- Forum: Centroid Acorn CNC Controller
- Topic: Lathe Threading - Spindle & Axis Sync (Resolved)
- Replies: 28
- Views: 9937
Re: Lathe Threading - Spindle & Axis Sync
Fresh report attached. I've just noticed that I'm still running a BETA version on lathe! I will update that first thing in the morning and have another go.
- Fri Dec 04, 2020 4:47 pm
- Forum: Centroid Acorn CNC Controller
- Topic: Lathe Threading - Spindle & Axis Sync (Resolved)
- Replies: 28
- Views: 9937
Re: Lathe Threading - Spindle & Axis Sync
I was really hoping to post details of my success but sadly not! Ordered the new encoder, machined a new mount for it, got the new encoder, broke the GT2 pulley belt, ordered a new belt, fitted the new belt, tried to turn a simple M10 thread and got the same results :( Gutted! The only thing that I ...