Posts made by ect2

I wander what mhallett's experiences were with the 2HSS57 drivers. I take it, he had a similar setup at some stage. I have a pair of closed loop 2HSS57 drivers and steppers. It will be a shame if they will not work for me….

Thanks DC42

I agree that perhaps some of the documentation should be a little more accessible. But being an expensive high end board it isn't really marketed at the less experienced, and I would guess fewer people who are less experienced buy one.

Duet targets the DIY crowd. That means everyone who chooses to buy it. Being an expensive, high end board it should have better documentation. DC42 does a great job fixing bugs and developing new features. What is lagging behind is user manual. There have been several comments made on this forum about the WIKI side of things but nothing that I can see has been done to address them. Is it just too hard?

@DjDemonD:

..the buck converter output doesn't need to go anywhere, the ground is tied in the buck converter between input and output.
.

Finally. The information I wanted to have. If an output doesn't need to go anywhere, then have it annotated on a diagram, a note exactly like the one above, but do not leave any blanks. Avoid ambiguity, especially where electricity is concerned. No broken hardware, no additional cost and inconvenience. Everyone is happy.

Fans are different. They are the most important bits of kit for safety reasons. Given the choice of voltages, numbers of wires etc a better support for fans in hardware and/or documentation is important. It becomes a selling point as well.

Sure, but your diagram does not specify the details of the connection for negative buck converter terminal. It looks looks like an open circuit. Simon, I don't really have a great problem with any of this. All I'm saying here is that a graphical information such as complete diagrams or annotated pictures do not leave room for any interpretations, because interpretations are those nebulous things that can cause a lot of smoke. The inconvenience and upset will be just as great regardless whether the board was $20 or $160. Costs are relative. Duet is sold as a mainstream board, and as such it should offer instructions for all types of customers.

@dc42:

The negative side of the 12V PSU output will need to be connected to the negative VIN terminal.

Which VIN? The green connector on the side of the board? Is there any chance of damaging the board if the fans are not hooked up properly? Can we have a diagram which shows all connections, without the "OK, I think I know how to do it". This board is way too expensive to screw around with it.

Dc42, how about a simple diagram that illustrates the solution without any ambiguity? You could also put it into the user guide/quick start guide. It will save you time in the long term, having to answer the same basic questions over and over again. Not everyone is electronics-savvy. I know I am not.

Agree:) My 24V PSU is a Meanwell.

My new power supply emits loud whining noise.

https://www.dropbox.com/s/1jccq1wi3dgqjwp/S-1000-3s%20noise.mp4?dl=0

This is a S-1000-36, 27A supply. Is this normal? My 24V PSU is not so loud.

Thanks Mike

This one is probably more suitable:

https://www.aliexpress.com/item/1280-720P-1-0MP-mini-IP-Camera-ONVIF-2-8-12mm-manual-varifocal-zoom-lens-P2P/32684641752.html

What focal length do you use for sharpest image?

Thank Mike. Something like this?

https://www.aliexpress.com/item/Audio-Mini-Type-HD-1280-x-720P-1-0MP-IP-Camera-Metal-Indoor-Security-Camera-ONVIF/32822170249.html?spm=2114.search0104.3.79.49f5ffacQ7JAJ3&ws_ab_test=searchweb0_0,searchweb201602_4_10065_10344_10130_10068_10342_10547_10343_10340_10548_10341_10084_10083_10618_10615_10307_10131_10132_10133_10313_10059_10534_100031_10103_441_10624_442_10623_10622_10621_10620_10142,searchweb201603_2,ppcSwitch_3&algo_expid=9f721937-67e2-4d39-8fdc-480a18e0d51a-12&algo_pvid=9f721937-67e2-4d39-8fdc-480a18e0d51a&priceBeautifyAB=3

Mike, how do you hook up and configure the ELP 1280? This is exactly what I've been looking for as I do not want to use WiFi.

So is this CPLD build available to download? I can't seem to find it.

Hi mhalett, have you tried to make any internal parameter adjustments with the HISU unit? It is going to be a while before I can experiment myself as nearly all of my stuff will be coming from China and the DUET from the UK, of course. I'm still waiting…The manual for the 2HSS57 claims that they are "smooth and reliable moving at low speed".

LOL, a great review. Shame we can't have it.

I've just come across this article:

https://newatlas.com/algorithms-3d-printing/52049/

Just wandering if this technique could be implemented with Duet firmware.

So is it just a faulty board or other people have similar problems with endstops when using expansion breakout board?

David, thank you for your instruction.
Hi mhallett, my printer does not exist yet. My Duet will arrive sometime in January. I will share my endstop experiences with you

OK, So if I need this resistor, can I use the spare PWM pins on the expansion board: ALM - to GND and 3~5K resistor between 5V+ on the expansion board and the ALM+ terminal on the driver?

Thank you David. I don't know how to display an image here but I've found a manual for this driver and it shows the following

https://imagebin.ca/v/3lumQ3kBWguW

So if I need this resistor, where do I actually put it? Also, the ALM + is shown as left open and the ALM - goes to the ground, so I can use the GND (-) pin of a spare endstop input. Sorry David. This is a steep learning curve for me.

Hello all, total noob here to Duet and 3d printers. This is my first post here. My knowledge of electronics is very limited. I'm still waiting for my Duet Ethernet. Having said that :), I have a set of 2HSS57 hybrid step-servo drivers with 57J1880EC-1000 steppers. I would like, if possible to get them working with the Duet. I have also bought an expansion breakout board. So, the connection, I think, should be as follows:

Duet Exp Board 2HSS57
–---------------------------
Step + PLS +
Step - PLS -
Dir + DIR +
Dir - DIR -
Enable + ENA+
Enable - ENA -

Looks easy so far, but the 2HSS57 also has the alarm terminals, ALM + and ALM -. What do I do with those? Can this driver work with Duet?

Thank you in advance, with apologies for my idiocy. Chris.