[quote author="sparkybg"]No, it will not make any damage. You can change the tips freely, no matter if the controller is powered or not. The controller may show "short circuit" or "open heater" or "open sensor" for some seconds at most, but nothing more. At least I think so. :)
You cannot damage the controller no matter what you do with Earth, Vout+/- and SENSEA/B. The only way you can damage the controller (more specifically the MCU in it) is to make a short circuit between the ID pin and one of the Vout+ pins, but this is very unlikely to happen because it will not put a power to Vout+ without proper ID resistors on ID to Vout-.[/quote]
Hi sparkybg. I have made DIY handpiece for JBC c245 cartriges and it working properly. But while a cartrige is half inserted its core terminal may connecting to Vout1+ and at the same time outer shell connected to EARTH. In other words Vout1+ connected to EARTH through the cartrige. And the question is can it cause any damage if I will change cartriges on the fly?
[quote author="DinikS"]Hi guys, The question how to flash microcontroller by pickit 2? Could somebody tell me how and which programm is used for flashing? My old version version of MLAB supports pickit2 but not support microcontroller, the last version supports microcontroller but not support pickit 2.[/quote]
I used pic32prog utility. It works fine with my PicKit 2 chinese clone.
[quote author="sparkybg"]Sebior, excuse me but I made a little mistake in the explanation - you should have a sort spikes on U15-5 (50 ot 100 per second) with the given voltage, not a constant voltage. The same pulses should be present at the MCU's ADC input.[/quote]
Thank you for explanation. I solved the problem. It was my fail. I got that problem because programmed firmware with PicKit2 with modified PK2DeviceFile.dat file. I reflashed MCU with pic32prog.exe utility and it working fine.
Hi, sparkybg. I have a problem with calibration. I soldered 10 ohm resistor between SENSEA and Vout1- and adjust the calibration trimmer. But there is almost no reaction. The ADC: and R: change their values just a bit. Here is a few measurements:
U18. Pin 1,2,3 = 0 V. Pin 4 = -0.68 V. Pin 5,6,7 = 0 V. Pin 8 = 3.28 V
U13. Pin 1,2,3 = 0 V. Pin 4 = -0.68 V. Pin 5,6,7 = 0 V. Pin 8 = 3.28 V
U16. pin 1 = short pulses about 3 volts. Pin 2,3,4 = 0 V. Pin 5 = -0,68 V. Pin 6,7,8,9,10 = 0 V. Pin 11 = 3,25 V. Pin 12,13,14,15 = 0 V. Pin 16 = 3,28 V. Pin 17,18,19 = 20 V. Pin 20 = 3,25 V.
