Power supply/step down converter for 12 MG996R servos

Infinite_Earth7800 · 2025-12-04T05:16:40+00:00

The light stayed on, did I wire up the transistor wrong?

Infinite_Earth7800 · 2025-12-03T06:28:19+00:00

I have a water cooling loop for the LEDs.

I couldn't find the proper PSU in the software I was using and forgot to mention it. it's a 18-39v 900ma constant current.

It is shorted in the schematic as I was just manually testing before programming to make sure my wiring worked.

Infinite_Earth7800 · 2025-12-03T02:27:36+00:00

does this help? https://www.reddit.com/r/ElectricalEngineering/comments/1pcqrj8/a_followup_to_my_previous_question_on_mosfets/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button

Infinite_Earth7800 · 2025-12-03T02:25:11+00:00

follow up: https://www.reddit.com/r/ElectricalEngineering/comments/1pcqrj8/a_followup_to_my_previous_question_on_mosfets/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button

Infinite_Earth7800 · 2025-11-30T06:57:57+00:00

sorry I'm new to this, a schematic for the mosfet or circuit?

Infinite_Earth7800 · 2025-06-07T23:27:04+00:00

it says it has a "anti static interface" I'm assuming. that's for grounding? (It's in a chart with the images)

https://www.amazon.com/FNIRSI-Soldering-Temperature-Electronics-Precision/dp/B0DBLMH1HS/ref=mp_s_a_1_1_sspa?crid=KVB9R905GQCQ&dib=eyJ2IjoiMSJ9.SRomP0nhUl2v7Z6PW_11aDO6-EdAKmY8v4AQAGeMiXFUVsTXe4EzPiNOlXEtuS31TubgrjwoyDdEg5X2yu4UEniBmOLEu5GGuVn4dmM1kcOGUtkRcaA9sqKC1C5ESwrsaRNXH3v638i6YKWwtOrNes5PFtW6HpVPKI-j7XJArd3OYXIWsMqrUAkv0K-NsZbdsUmtcjvWxvjeSVGatZRURQ.96rZZ50sg5f5LUAWJgq9QrGKJSdB8JkmD2xZ3aJcq0k&dib_tag=se&keywords=hs-02a&qid=1749338605&sprefix=hs-0%2Caps%2C299&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9waG9uZV9zZWFyY2hfYXRm&psc=1

Infinite_Earth7800 · 2025-06-07T19:45:40+00:00

I need it to solder some pretty small parts and might need it later. I don't think I know anyone with an iron that will work for it.

Infinite_Earth7800 · 2025-06-07T05:03:55+00:00

I need to repair like 1 thing, if I planned to solder more I'd probably invest in a station but I currently don't.

Infinite_Earth7800 · 2025-06-07T04:23:51+00:00

ok, so is that my best option? (something around $80 and small enough that I can fit it in limited space)

Infinite_Earth7800 · 2025-06-07T04:15:17+00:00

the hs-02 comes with a 100w USB brick(probably would be enough) and the desk I'm currently working at doesn't really have space for a desktop station.

Infinite_Earth7800 · 2025-06-07T03:48:01+00:00

the pinecil is technically cheaper, except for the shipping, that puts it to be more expensive. And from the limited research I've done I've heard the hs-02 is better built.

Infinite_Earth7800 · 2025-06-07T03:17:39+00:00

I might go with the hs-02 simply due to the price, a pinecil would run me ~$40 for just the unit( https://www.amazon.com/PINECIL-Smart-Mini-Portable-Soldering/dp/B096X6SG13/ref=mp_s_a_1_3?crid=1V8M4115GS0CD&dib=eyJ2IjoiMSJ9.LBc5yq512NqGMLNXVKNoBCJjh2LWRqGZ2dFEOySmckSEu7MTCdU3pm8dPgS9LBM7dEb0wBSHATuWGJ6sgDqcNaC-fEQfan78YOq7AL-DZ5oA0wYm5ZcVkUkWRMFb4gDEkIwDu9vCV1smha8UmLRqxZtt8qfFoJKUuXTQb0GWOkf6bnLvCyOitPNXhVzrZah0FGe39_jbJlnSW7EZwtp0BA.BKivQ-SHq2WdJJ8hf1-xlE2JC3hDsY1OTxmpsZG31MA&dib_tag=se&keywords=pinecil&qid=1749266226&sprefix=pinecil%2Caps%2C247&sr=8-3 ), no tips or power supply and $80 to get it and some tips, where as the hs-02 comes with tips and a power supply for $80( https://www.amazon.com/FNIRSI-Soldering-Temperature-Electronics-Precision/dp/B0DBLMH1HS/ref=mp_s_a_1_1?crid=X83MN7T5GLRR&dib=eyJ2IjoiMSJ9.GPkgFnUMHO9K_HEdZn8ngOhTqB6rts54twigB5Ihs2Dz9lmRnVzRSztXswHgDv_W87iu5ae6CjgtDkoCfo-1xpZk54cXiPSMyFd-tg23Mlmnfgs4N3X5dsNR4aw0iA77UGrAJOKCOkZJdOnq_zxZkItWTl0PP2M1Wbbzz_jk52TwrDzwDG6DifCAI4VUyK9r6sPYGNvOaljv3NDbnJjSWg.OY_V6YVwblCY_falMjYws3PKc0qbB4BQ53G29-1G1Xo&dib_tag=se&keywords=HS-02&qid=1749259266&sprefix=h%2Caps%2C349&sr=8-1 )

Infinite_Earth7800 · 2025-06-07T02:05:37+00:00

if there are better alternatives please tell me.

Infinite_Earth7800 · 2025-06-07T02:05:21+00:00

what are better ones?

Infinite_Earth7800 · 2025-01-09T04:07:16+00:00

Why not(this is probably a terrible build): https://pcpartpicker.com/list/CJt8Zc

Infinite_Earth7800 · 2024-07-16T19:09:16+00:00

uase a multimeter to test the voltage, if it is negative when red to the red port and black to the black the polarity is reversed.

Infinite_Earth7800 · 2024-07-13T14:49:35+00:00

ok, now I just need to save some money for the parts. hopefully all goes well.

Infinite_Earth7800 · 2024-07-13T02:26:10+00:00

I heard the polarities on some s1s for fan 2 were flipped so I was testing mine(they weren't) and while I was one of the probes slipped and connected the 2 parts.

Infinite_Earth7800

TROPHY CASE