FM2 on steroids

[dom44]

yes that will work i have 100 x LM1117 ADJ's coming from ebay they need resistors to set value if yours is a 3.3v then it doesn't

[MartyJ1963]

Thanks Dom,,,,,Yes, they're 3.3v. Have I placed it correctly on the photo I posted? I always get confused with all the different layouts now,,lol,,but it's a lot of fun (and learning) building stuff,,,Thanks again,,,Marty

[ricalbertvig]

doing other tests and some more changes of components .. the pinpointer very stable from the beginning no longer need to readjust ... very stable more than the previous one I did

[MartyJ1963]

Hi Ricalbertvig,,,,,That's great!,,We are looking forward to your tests and modifications,,,Could you please post the sprint layout once you've completed tests so we are able to try it too. Much appreciated. Thanks,,,,Marty

[ricalbertvig]

FM2 MD,.rar hello there is my work .. condesador 560 pf of polipropeno ,,, those of 1 nf of tantalio, those of 20 pf of multilayer ceramics .. those of more of polyester, .. it seems that the good quality of the capacitors influences a lot in stability ...

[ricalbertvig]

https://www.youtube.com/watch?v=D67aKdywi1U

[nickel_n]

Hi ricalbertving
could you please give the dimensions of the ferrite rod?
length and diameter?

[ricalbertvig]

hello any ferrite of the photo serves ... you have to shield and connect to ground ...

[MartyJ1963]

Hi Ricalbertvig,,,,,Thanks for posting the layout,,,it looks really good what you have done,,,much appreciated,,Regards,,Marty

[MartyJ1963]

Hiya Ricalbertvig,,,Do I still need to mount the 560R and 1k resistors if I use an LM1117 voltage regulator? Or can I leave them in? Thanks,,,Marty.

[MartyJ1963]

@Ricalbertvig and Dom44,,,Could either of you please check this drawing I've done of Ricalbertvig's Mods to see if it's correct as all I have done is squared it all off and neatened up a few components,,Thanks in advance. Regards,,,Marty

[ricalbertvig]

if that is what I showed in the video and the modifications that I have tried

[ricalbertvig]

hello marty in the regulator is what I used is the lm317t, since I do not have lm1117.

[ricalbertvig]

[MartyJ1963]

Hiya Ricalbertvig,,,,thanks for your posts. I have LM1117, which is a 3.3v regulator, and I have LM317T also. I will try the LM317T as you have done, but I was wanting to know, if I use an LM1117, do I still have to place the 600R and 1K resistor or do I have to remove them? I checked the BC337 pinout on my drawing and have placed them correctly. Thanks again,,,Marty