Yes. The last (E) for me was set - after reading it from the processor - on FD. Setting it to FC causes the T4 to not turn on at all or it turns on for a second, maybe two and goes out. FD and it works, except that it measures nothing (the LED sees for example as MOS-FET). fuse.jpg Download (13.15 kB)fuseok.jpg Download (13.15 kB) I log from programming:
avrdude.exe: Device signature = 0x1e950f (probably m328p)
avrdude.exe: NOTE: "flash" memory has been specified, an erase cycle will be performed
To disable this feature, specify the -D option.
avrdude.exe: erasing chip
avrdude.exe: set SCK frequency to 1500000 Hz
avrdude.exe: warning: cannot set sck period. please check for usbasp firmware update.
avrdude.exe: reading input file "C:\Users\User\Desktop\M328 firmware\m328.hex"
avrdude.exe: input file C:\Users\User\Desktop\M328 firmware\m328.hex auto detected as Intel Hex
avrdude.exe: writing flash (24802 bytes):
It is possible that I did not check the electrode software, so you say that you took the first steps Bravo Slingshot could fall, or actually measuring inputs from electrostatics, sometimes when you do not have the charges discharged from your hand, a spark jumps after touching the radiator - sometimes it could happen that you were holding an element and during checking, a charge could flow and damage the processor. And you have to remember about discharging the capacitors.
I think so, because something has been "loading" lately and I did not put on the armband. Well, tomorrow I will try to replace it and reprogram it. I will let you know what and how if I manage to replace it, because I have never mentioned such babies .
Hey, it's not so terrible - flux and hot Air and a few seconds and the second one is on, I was also afraid of these SMDs until I got acquainted with the Hot Air station - now I can not imagine working without it - and I used to get tired of a soldering iron.
There was a bit of tension because it was the first time I was dealing with this baby. There was no problem with desoldering, hot-air did its job. Then coffee (to calm your hands ), flux, setting a new prock and soldering; it went without a problem. I downloaded the factory soft - and the tester started from the first inclusion. Calibrate and works as it worked .
Hello, whenever I replace the chip or other integrated circuit, where there are a lot of pins, I catch a new circuit using a soldering iron, external pins so that the system does not move and then I heat it - it guarantees that the system will not move and will not short-circuit. But the circuit is soldered very nicely and neatly for the first time - a big applause ;)
Hello How you have a tolerable wind and not a storm it's not necessary to catch the butt. If you have a sensible paste or even well-tinned pads, the system will flow precisely to the center of the pads and so nicely that you won't be able to position it better by hand. Recently, I had a dense layout, almost twice as thick as the Atmega in the TQFP, and I will have to solder it that way. Generally, it is better to do it on a hob, but sometimes, due to the lack of systems, part of the testing system is mounted and there is no way to heat from the bottom. best regards
Hello. Although I have a sticker on the housing "Discharge capacitor", I connected it without discharging and the display shows such pictures when measuring capacitors and resistors. In recent posts, you write that the processor may have crashed. Unfortunately, I will not replace the processor, let alone upload the software. I only have to buy a new tester.
Hello, it is possible that only the soft broke - before I started replacing it, you could connect to the programmer and try to upload the soft again. If you did not discharge the capacitor before the measurement, the processor could also ask what charge the capacitor could have - if the voltage on it was greater than 5V, you will probably have to replace the processor.
Hello Replacing the processor is a piece of cake, but you have to make your life easier. First of all, you gave a lot of photos and you can't see the processor on any of them, which is important for its replacement. Secondly, I can see that the GDPR is working , disappeared from the descriptions of the place of residence, and it may turn out that within a radius of several hundred meters you have someone who could help. You need to download a diagram to this meter and think what could shoot after turning on the charged capacitor. As the situation with the capacitor repeats itself, do not forget to share the damage in your case.
Hello Now with photos and diagrams, there is clarity. At 99.9 & you beat the analog inputs in the processor. The matter is simple because next to the processor there is a lot of space and even with a soldering iron it can be repaired. Note the 6 pads stacked 2x3, this is definitely a place for the CANDA connector for programming processor, so you can connect the programmer without any excuses. You just need to see in what order There are pins to solder the socket from the right side. If you don't have a steady hand, every mobile and computer service will sell such a processor.
I already wrote about it right under the first pictures that the processor to replace - you need to buy a new "clean" chip (not programmed), then a soldering iron in your hand and after the replacement you need to program a new chip - more on this topic
Welcome. And after a few years my M328 fell. I fired it without the element and suddenly the screen and crap went out. So after connecting to the power supply, it shows a consumption of about 250 mA, the screen does not light (sometimes blinks) the green LED. And the Atmel MEGA328P is heating up. It is a version for 14500 rechargeable battery and USB charging. Has it fallen?
I tested a new purchase in the form of the LCR-TC2 tester. Everything was fine until the 22uf, 50V capacitor was inserted into the KAA sockets. Subject turned off. Thought the battery had run out. I connected to charging for an hour, but after turning it on again, this view appeared.
I know I made a mistake. But is it possible to test a discharged capacitor at KAA connectors? I would like to add that I tested the same capacitor on connectors 1-3 (several times) and it was OK, and when I put it into the KAA, the tester was damaged. Shouldn't it be damaged after inserting it into connectors 1-3 for the first time and not later in the KAA connector? I am asking because I would not like to damage the other one and know if it is possible to test other elements on the KAA connector.