xdev
Member level 1
- Joined
- Jul 5, 2003
- Messages
- 34
- Helped
- 2
- Reputation
- 4
- Reaction score
- 2
- Trophy points
- 1,288
- Location
- Golden Land
- Activity points
- 269
Who's circuit was better?
No am not sure, it may have errors. If you find one, let me know.xdev said:Hi, Andy_123
I needed re-design pcb from your schematic. Are you sure not have errata?
PiCS said:icd2 with Pic16F877a+Pic18F4550+Firmware work ok
Thanks for all
PiCS said:@kennylee68
D6,D7=1N5819 and Q1=20Mhz
R1=20K for 12.5V (Vpp)
Select "Download Operating System"whats the problem? can anyone tell me how to fix it....
Andy_123 said:Select "Download Operating System"whats the problem? can anyone tell me how to fix it....
PiCS said:icd2 with Pic16F877a+Pic18F4550+Firmware work ok
Thanks for all
ech said:PiCS said:icd2 with Pic16F877a+Pic18F4550+Firmware work ok
Thanks for all
Hello,
I've built the icd2 described in this post and I have a few questions:
- I'm using MPLAB 7.31
- The Windows drivers successfully installed
- What tests can I do without connecting a target board ??? ( are the self tests supposed to succeed without a target board)
- The U1 and 0.47 resistor are getting hot quite quickly, is it normal ??
Thanks for your help ,
Ech
kennylee68 said:ech said:PiCS said:icd2 with Pic16F877a+Pic18F4550+Firmware work ok
Thanks for all
Hello,
I've built the icd2 described in this post and I have a few questions:
- I'm using MPLAB 7.31
- The Windows drivers successfully installed
- What tests can I do without connecting a target board ??? ( are the self tests supposed to succeed without a target board)
- The U1 and 0.47 resistor are getting hot quite quickly, is it normal ??
Thanks for your help ,
Ech
I think you can do a self test, if it pass, the icd2 will work fine.....you should check you circuit and the components,,,, the components should not get hot, even the U1 & 0.47 resistor ( I use a 1 ohm resistor)
PiCS said:Revision B
ech said:kennylee68 said:ech said:PiCS said:icd2 with Pic16F877a+Pic18F4550+Firmware work ok
Thanks for all
Hello,
I've built the icd2 described in this post and I have a few questions:
- I'm using MPLAB 7.31
- The Windows drivers successfully installed
- What tests can I do without connecting a target board ??? ( are the self tests supposed to succeed without a target board)
- The U1 and 0.47 resistor are getting hot quite quickly, is it normal ??
Thanks for your help ,
Ech
I think you can do a self test, if it pass, the icd2 will work fine.....you should check you circuit and the components,,,, the components should not get hot, even the U1 & 0.47 resistor ( I use a 1 ohm resistor)
Thanks, I'll do a complete check this evening ...
Auto-connect not enabled - Not connecting (Try enabling auto-connect on the ICD2 settings pages.)
Connecting to MPLAB ICD 2
...Connected
ICDWarn0054: MPLAB IDE has lost communications with the MPLAB ICD 2. Would you like to attempt to reconnect?
ICD0286: Unable to communicate with ICD
MPLAB ICD 2 Ready
Connecting to MPLAB ICD 2
...Connected
ICDWarn0054: MPLAB IDE has lost communications with the MPLAB ICD 2. Would you like to attempt to reconnect?
ICD0286: Unable to communicate with ICD
MPLAB ICD 2 Ready
To Chamera:Chamera said:If I'm looking at the right schematic (they are all pretty much the same thing) L1 on the USB port is to filter the power for the board. See "Choke"
L2 is used for the DC step-up converter to supply higher voltages for MCLR on some IC's
If you really want to make the inductors, you need a multimeter or similar device capable of measuring the inductance as you wind it. Try to use a core, I've found the air-wound inductors I've used in PLL systems are near telepathic. Think a bad thought and it stops working!
If the inductors are a problem, you can always use a external power supply for the reference voltage until samples arrive.
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?