2 Channel and 4 Channel Laser Diode Driver

[andy_con]

Edison your a bellend!

Your not interested in these drivers remember so let the seller and the buyer sort out what features they want and how much it costs/willing to pay.

Or are you interested and trying to run this gb?

I'm sure your pointless comments are very useful somewhere just not here

[lasertack]

basic, reliable, cheap and unavailable

[andy_con]

Lasertrack just to be clear on my interests as soon as I get my money back from that c#@t badpip I'm interested in 20 drivers

[lasertack]

Lasertrack just to be clear on my interests as soon as I get my money back from that c#@t badpip I'm interested in 20 drivers

Great to hear

Till the end of the week I´ll collect all your ideas and decide what features will be added. The decision will be based on the pcb size and price.

[sbk]

Just my 2 cents about the power connectors. I'm just having issues with two drivers which have the same connectors for the 5V power input (2.5mm grid, molex style), and both gone bad after less than a year. Bad contact --> increased contact resistance --> voltage drop --> less power output, especially if you have not much more voltage than required for the diode.
I ended up soldering the wires directly on the connector and all is going much better now!

So IMHO it's not a good idea to use them to pass high current as they are not reliable, you'd better prefer good old screw terminals

[lasertack]

Just my 2 cents about the power connectors. I'm just having issues with two drivers which have the same connectors for the 5V power input (2.5mm grid, molex style), and both gone bad after less than a year. Bad contact --> increased contact resistance --> voltage drop --> less power output, especially if you have not much more voltage than required for the diode.
I ended up soldering the wires directly on the connector and all is going much better now!

So IMHO it's not a good idea to use them to pass high current as they are not reliable, you'd better prefer good old screw terminals

I dont see that happen what you describe but I understand what you mean. Screw terminals is an excellent idea but they have one disadvantage, their size. A screw termial for 10 wires (2 x 5pin) is about 50x10mm in size. And this is too large. No way to get it on a 40x50mm pcb.

And last but not least, they are very expensive.

Alex

[andy_con]

I'll pm you shortly lasertrack

[sbk]

I dont see that happen what you describe but I understand what you mean. Screw terminals is an excellent idea but they have one disadvantage, their size. A screw termial for 10 wires (2 x 5pin) is about 50x10mm in size. And this is too large. No way to get it on a 40x50mm pcb.

Alex

Oh no need for screws terminal for all the connectors, just where a few amps are flowing... Signal connectors are just fine with molex. And you can find miniature screw terminals as well, 3.5mm pitch, maybe even 2.54mm. Ideally spring terminals would be even better.

Again, it was just an advice based on my very recent bad experience with these connectors on laser modules (and secondarily my 15 years experience in electronics)

[lasertack]

Oh no need for screws terminal for all the connectors, just where a few amps are flowing... Signal connectors are just fine with molex. And you can find miniature screw terminals as well, 3.5mm pitch, maybe even 2.54mm. Ideally spring terminals would be even better.

Again, it was just an advice based on my very recent bad experience with these connectors on laser modules (and secondarily my 15 years experience in electronics)

Thanks for your advice. You´re right, there are also 2,5mm pitch spring terminals but the problem is still the size in general and the price. But I´ll think about it.
I´d like to implement a new feature rather than using an expensive connector for nearly the same price.

[edison]

Your not interested in these drivers remember so let the seller and the buyer sort out what features they want and how much it costs/willing to pay.

I,m not trying to take over anything i just point out that extra features cost extra money and it would be nice to see for a change that lasertack actually get payed for implementing these extra features that people want.

One of the reasons that badpip drivers are gone is because of the low price. The couldn,t be manufactured for that price that Badpip sold them for so he did everything by hand. He couldn,t keep up with the (succes)sales next to his schoolwork and that cost him his bussiness. Some people are still angry with him because he still owes them money. He should payback all the money that he recieved but it doesn,t make him an asshole or a bad person. He just made mistakes that,s all.

Its great to see that lasertack and others that have the skills in electronics step up the plate to design drivers. The availabillity depends also on the price because if the price will be to low then after a while they will disapear again because its not worth the effort.

So take your pick, higher priced but available for a long time or a cheap one that disapears after a year.