....
in general I have a COMPLETE misunderstanding
...With such a low value, your probe capacitances and the connection methods affect the results.
How many pF the Tester shows when there is nothing connected to the probes? (keep the probes connected to the ZIF socket)
Use a 50-100pF capacitor to compare your DMM and Tester. Probably you will see a similar 'spread'.
tester can be trusted...
then the problem is in the multimeter ... it probably can't cope ...
....Don't you understand that it is impossible to compare the readings of devices with autonomous power and kicking from a mains power supply?
The sensitivity of the TTester is so high that it reacts to the close presence of hands, like an antenna to influence network interference.
In all my examples, there is no mains power and there are no hand pickups.
Just got mine after 3 weeks. It has an unmarked microcontroller. By the looks of it, it seems like a 32pin deal. Is there a way to know which of the clones this is ?
Just got mine after 3 weeks. It has an unmarked microcontroller. By the looks of it, it seems like a 32pin deal. Is there a way to know which of the clones this is ?That is a Logic Green LGT8F328P MCU. It is said to be "almost" compatible with the Atmel ATmega328P. However the pinout is slightly different. As of yet there really isn't any fully tested OSHW Transistor Tester software for it, although this person is working on it:
https://github.com/DurandA/transistor-tester-lgt328p
I have also read discussions stating "it may be possible to rework the PC board for Atmel ATmega328P."
cool. Did anyone try this modified firmware... Does it actually work?
How does one go about flashing these things.... likely not serial, like arduinos?
Not even the screen lights up when I connected a battery and tried to test a resistor.
Then I try to use the second one I bought and it is DOA. Not even the screen lights up when I connected a battery and tried to test a resistor. Just not my day.
Then I try to use the second one I bought and it is DOA.
Not even the screen lights up when I connected a battery and tried to test a resistor.
Just not my day.
Well a fake there.
Then I try to use the second one I bought and it is DOA.
Not even the screen lights up when I connected a battery and tried to test a resistor.
Just not my day.
Well duh, you have to solder the components to the PCB first!
Sorry, I'll find the door and let myself out
I ordered a LCR-TC2 from SeeSensor on AliExpress which arrived today.
https://www.aliexpress.com/item/1005004717377243.html
PCB is marked T7 Plus v2.0 - mcu has no markings, 8 pins per side.
Note: This seller was previously known to ship Atmel based LCR testers (at least in Jan 2023) but now in April 2023 they have moved to the alternative
...Then I try to use the second one I bought and it is DOA.
Not even the screen lights up when I connected a battery and tried to test a resistor.
Just not my day.
After looking at your photo very closely I think I understand the problem.
Probably worth getting another kit anyway as who knows how long these genuine Atmel kits will be around for.
Yes, there is no crystal there either, or so I found out when I was going through the components.
Where can you buy it from?
Luke
I ordered a LCR-TC2 from SeeSensor on AliExpress which arrived today.
https://www.aliexpress.com/item/1005004717377243.html
PCB is marked T7 Plus v2.0 - mcu has no markings, 8 pins per side.
Note: This seller was previously known to ship Atmel based LCR testers (at least in Jan 2023) but now in April 2023 they have moved to the alternative.
I have the same item like this. Mod to Atmega328 with ...