Products > Test Equipment
TC1 lcr-meter transistor-tester fix
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Nokeshas:
WELL..
1. installed WinAVR-20100110-install
2. extracted contents from avr8-gnu-toolchain-3.7.0.1796-win32.any.x86_64.rar to winavr directory.

edited makefile, config.h, config_328.h (to specify correct display)

started programers notepad(winavr)
opened makefile
tools-> make all -> pile of errors.

i think i wasted enough time = time to buy new tc1  |O
madires:
If you prefer to buy a new one be aware that many come with a different MCU (APT32F172K8T6 or LGT8F328) at the moment. And the firmware is poorly adapted, i.e. a few measurement results are really bad and less features. Some even lack the self-adjustment.
Nokeshas:
i have solved "tools-> make all -> pile of errors."problem with uploading msys-1.0.dll new version to winavr installation folder.
Now i have fully working, with correct lcd offsets and other corrections TC1 dip atmega368p model with 1.47 M firmware since i have not been able to adopt it to 1.49 or 1.48.

But also done mistake and ordered TC1.  |O

in the picture is what arrived... i have never seen that board, there is no quartz and also it is fake atmega328p i think it is APT32F172K8T6 or LGT8F328.  :palm:

I agree ... poor device cant identify some components and when self testing it - no firmware version shown.

Maybe there is some known seller or source where i can get tc1 or tc2 with real atmega324pa?  :-//


Thanks
madires:
Yep, your new TC1 has an APT32F172K8T6. Here are some hints on identifying the MCU:
- MCU in DIP is usually an genuine ATmega.
- APT32F172K8T6 has different power pins:
  - 32-LQFP/QFN: 18=Vss, 19=Vdd (ATmega328 32-TQFP: 5=Gnd, 4=Vcc)
- APT32F172K8T6 uses SWD port for ISP:
  - 5 pins: Vdd, Vcc, F_SDAT, F_SCLK, F_RST
- Testers with APT32F172K8T6 often lack a quartz crystal.
- LGT8F328 has slightly different pins:
  - QFP32L: 21=PE2/SWD (ATmega328 32-TQFP: 21=Gnd)
- LGT8F328 uses SWD port for ISP:
  - 5 pins: Gnd, Vcc, SWD, SWC, Reset
- Clone variants with an genuine ATmega are usually about EUR/US$ 5 more
  expensive than the variant with a different MCU.
jimmc:
Yet another version here.
Processor appears to be LGT8F328 and ISP 5 pins: Vcc, Gnd, Reset, SWD, SWC.
Firmware reported as 3.12K.

As supplied about 1 in 5 starts gave a jumbled screen (see pic), restarting after timeout gave normal screen.
I guessed the the processor might be starting before the screen and not initialising it correctly.
I tried adding a 100n capacitor between RSTN (pin 29) and ground (physically between R22 and the end pin of the display).
So far this seems to have cured the problem.

Jim

ps Thanks to madires for all the hard work he has done on these devices.
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