Are the Gecko drives' step/dir inputs compatible with 3.3V sources? I know TTL (5V logic) should be compatible with LVTTL (i.e. 3.3V logic), but the Gecko...
Arvid, I would say no. It is best to get a 5 volt source. 3.3 volt step and direction signals will not work well with Gecko drives. The Sound Logic breakout...
According to the data sheet, a 3.3V parallel port dose not meet Gecko's spec. Heck, a 5V parallel port spec dosn't meet Gecko's spec. But most printer ports...
Mariss - Ballendo mentioned in the DIY-CNC group that you had posted an H- bridge circuit on one of the groups. Do you recall where it is? Regards, Tony...
No, not completely washed up. :-) A TTL output has a weak current source output, its current sink ability being much better. Left to itself, the ouput...
Thanks for your replies so far! I am building my own step/dir generator using all 3.3V logic (the reason being the main chip cannot run on 5V). Mariss, I would...
Mariss, I am reasy to begin development on a couple of projects and would like to use the G2002 with Gecko step motor drives. One project will use Mach2 for...
... That is a mosfet driver circuit not a complete H-Bridge. But is the basis of one method to drive a mosfet. Check the date and then go to the CCED posts...
Mariss Can you help please: (a) What is the worstcase data setup time between a Dir line change and a Step pulse in the G2002 cube/slab? On the face of it the...
John, a) The purpose of the circuitry surrounding the HC125s is to seperate the last CW step from the first CCW one (or visa versa) with a decent time...
Mariss Thanks for your detailed reply. You have implicitly answered point (b) about any need for software to be careful going fom forward to reverse by...
Hi when can we expect the g2002 to hit the shelves as they say. I was planning to order a couple of the gen 2 desk cnc boards now tht it supports thread...
Hello, I finaly found a FPGA Dev. system that may be helpfull to thoes looking at helping with the G2002 FPGA Version dev. I had heard of this product about 6...
Is Mariss moving his motion algorithms over to an FPGA, or is this an independent effort to duplicate the functionality of a G2002 using lower cost hardware?...
... <snip> Perhaps the time really has come to hang up my soldering iron, wirewrap wire and 74 series breadboarding. I have ordered one and it looks like there...
I had a look at the schematics for the G2002 and it just screamed FPGA. It seems foolish to use large boards filled with DIPs when one FPGA can do the job....
Hi, Everything is still on track, it's just the tracks turned out to be longer than I expected. :-) I suspended work on the G2002 last January in order to come...
Mariss; Thanks for the update and lucid writing. I've been waiting for the new drives to stabilize and hit the market place! As to the G2002, the device...
... I am routinely hand soldering FPGAs and other chips with 0.5 mm lead pitch. That is pretty fine stuff, but it can be done with simple tools. Of course, it...
I have a situation where I have to use two dc motor, one encoder to move x-axis. Now, the configuration is parallel or series. In parallel connection, the...
Our techs here at work do it also. It is rather amazing to see a 204 lead part soldered with no shorts. They flood the leads with liquid flux and apply the...
Surface tension is a wonderful thing. Mariss ... 204 lead part soldered with no shorts. They flood the leads with liquid flux and apply the solder rather...
How large of servo motors are people using with the G320? I have a lathe with 3/4 hp servo motors and was wondering if this reasonable to expect this to run...
... The Gecko 320 can deliver 20 A at up to about 80 V. So, you'll be able to get full torque and about 80% of full speed. Do you mean it takes 11 A just to...
The manual shows the motor is rated 3/4 HP continous. I also found the current limit on Z axis was set to 30 amps and 22 amps on the X. The manual stated the...
Hello, I have just got a set of Gecko G201's and have just hocked them up. But, the motors wont turn. I think there is a problem with the step and dir. I took...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
