Greetings;
I have a LCR-T4 (mega328p, 8 MHz crystal, 78L05, TL431, one button, no encoder, no up/down buttons) and I have loaded 1.47m on it successfully (also previously loaded 1.13k, but that's another story). Anyhow, running 1.47m, and noticing some odd behaviors.
Here's what I did; per instructions I edited Makefile, config.h, and config_328.h with appropriate settings (as best I could). If I was unsure about a software or hardware feature, then I took it out. The unit boots, and displays fine (had to flip the display and remove the offset in the x axis of the display), and responds to the button as expected.
Observations:
The unit boots, and runs a test and comes back with an IGBT N-ch (with nothing in the test port).
I put the unit in menu mode by quickly clicking twice, I select test, it asks for a short, I install it, and then it does nothing. I quick-click, and it returns the menu (if I long-click then it gives an error! and returns to the menu).
If I leave the short in during a normal test cycle, it says "probing..... C", it takes a while, but then shows the short across all three terminals. (Draws a fair bit of current, about 45 mA, from the power supply, too).
It reads an resistor, LED, or an NPN, or a PNP, as an IGBT.
It reads a resistor as "no component found".
Measuring resistance (power and ISP programmer disconnected) between test pins 1 and 2, I get 39K ohms, from 2 to 3 I get an open, from 1 to 3 I measure about 1.4M ohms. I'm going to hit Google and look for a schematic for this unit after I post this.
Any suggestions of things I should look for? Much appreciated.
Rob