ISP Header → ATmega328P pins: MOSI → PB3 (pin 17) MISO → PB4 (pin 18) SCK → PB5 (pin 19) RESET→ PC6 (pin 1) VCC → +5V (use external power or USBasp's 5V) GND → GND
Menu-driven calibration (hold button >2s > Calibration > follow prompts) – much more precise.
Have you successfully flashed your LCR T4? Share your before-and-after accuracy tests in the comments below. lcr t4 firmware
# Set fuses first avrdude -c usbasp -p m328p -U lfuse:w:0xE2:m -U hfuse:w:0xD9:m -U efuse:w:0x06:m
avrdude -c usbasp -p m328p -U eeprom:w:GM328A.eep:i ISP Header → ATmega328P pins: MOSI → PB3
Adds frequency measurement, PWM generators, and rotary encoder support.
A significant source of confusion regarding "LCR-T4 firmware" stems from the naming conventions used by Chinese manufacturers. The firmware that runs on an LCR-T4 is often different from the firmware on an LCR-T7 or the older M328 (GM328) testers. # Set fuses first avrdude -c usbasp -p
avrdude -c usbasp -p m328p -U flash:w:newfirm.hex -U lfuse:w:0xe2:m Add -B 4 if programming at 8MHz with slow USBasp.