I did get it printed with thanks from dmnCrawler tutorials.
This is for the Lot Lizard which I will eventually start to build. I haven't started the buffer I got a few months back, by a few months I mean last August.
Hopefully my holes line up.
I have a Longer 4KPro, it printed great then about six months ago it went to the sh**ter. I haven't had a good print since. I've been troubleshooting when I feel like it. Might get another hotend for it.
Adjust the trim pot.. I finished mine a few weeks back and did the same thing. I adjusted the trim pot until I found the sweet spot. Go in small increments. Also I think one stage is subtle over the other.
Get one of these https://www.amazon.com/1HZ-500KHZ-Functional-Generator-Seesii-Frequency/dp/B08NSR5GYR/ref=sr_1_3?crid=WTOTKLTK0BVA&keywords=Signal+Generator&qid=1664483189&qu=eyJxc2MiOiI1LjMyIiwicXNhIjoiNS4xMCIsInFzcCI6IjQuNTUifQ%3D%3D&sprefix=signal+generator%2Caps%2C110&sr=8-3
My LCR-T4 is fubar'd
2N2222A with the meter hfe = 431, using the bread board = 270
2N3904 with meter hfe = 430, bread board = 127
BC337 meter = 430 - bread board 244
S8050 meter = 420 - bread board 160
LCR-T4 Mega328 ...
My DMM is being a pain and will have to get my fluke from work. For some reason it's not reading µA and the mA is sporadic. I'm using a 470K on the base with a 9v input. Going from E to GND and then putting 9v into the C to GND and not getting a good reading either...
My DMM and Transistor tester is wrong as everyone of my NPNs are 280+ hFe.. My 2N2222A are all 480+ hfe. I got some from Tayada, Mouser, Newark, and Amazon.