Re: [kicad-users] Re: two supply voltage and Vcc
That is an annoying part of Kicad... but I once solved that editing the .sch file. unfortunatly I don't remeber how :( can anyone help fixing that? just one guess: create another 74HC00-3 and edit the invisible pin... Alain PS I hope that one day someone will work on Kicad's useability. Today Kicad has all the features that we can need, but lots of annoying details make life difficult. yamamaya_com escreveu: Hi Jeff, Hmm... It sounds reasonable. I tried to do like that, that is; place 4 units of 74HC00 and connect all VCCs of them to +3.3V, but unfortunately nothing improved. Also, it really sounds reasonable, but inappropriate. It may make schema too complicated. - Mao --- In kicad-users@yahoogroups.com, jeffs_cc j...@... wrote: Mao, I am new to KiCad so this is just a guess, but have you placed all the sections of the 74HC00 that is connected to 3.3v? This part has sections A-F, and each section has the hidden VCC and Gnd pins. If you have not placed all the sections on the schematic, perhaps KiCad is picking up the VCC from the unused sections and assuming they are all tied together. You might try placing all 6 sections of the 3.3v 74HC00 on the schematic and show and connect VCC on all 6 to 3.3v. Jeff Please read the Kicad FAQ in the group files section before posting your question. Please post your bug reports here. They will be picked up by the creator of Kicad. Please visit http://www.kicadlib.org for details of how to contribute your symbols/modules to the kicad library. For building Kicad from source and other development questions visit the kicad-devel group at http://groups.yahoo.com/group/kicad-develYahoo! Groups Links
Re: [kicad-users] Re: two supply voltage and Vcc
What about edit the invisible pins and rename them to VDD instead of VCC? Wei From: Alain M. ala...@pobox.com To: kicad-users@yahoogroups.com Sent: Tuesday, March 17, 2009 1:45:07 PM Subject: Re: [kicad-users] Re: two supply voltage and Vcc That is an annoying part of Kicad... but I once solved that editing the .sch file. unfortunatly I don't remeber how :( can anyone help fixing that? just one guess: create another 74HC00-3 and edit the invisible pin... Alain PS I hope that one day someone will work on Kicad's useability. Today Kicad has all the features that we can need, but lots of annoying details make life difficult. yamamaya_com escreveu: Hi Jeff, Hmm... It sounds reasonable. I tried to do like that, that is; place 4 units of 74HC00 and connect all VCCs of them to +3.3V, but unfortunately nothing improved. Also, it really sounds reasonable, but inappropriate. It may make schema too complicated. - Mao --- In kicad-users@ yahoogroups. com, jeffs_cc j...@... wrote: Mao, I am new to KiCad so this is just a guess, but have you placed all the sections of the 74HC00 that is connected to 3.3v? This part has sections A-F, and each section has the hidden VCC and Gnd pins. If you have not placed all the sections on the schematic, perhaps KiCad is picking up the VCC from the unused sections and assuming they are all tied together. You might try placing all 6 sections of the 3.3v 74HC00 on the schematic and show and connect VCC on all 6 to 3.3v. Jeff - - -- Please read the Kicad FAQ in the group files section before posting your question. Please post your bug reports here. They will be picked up by the creator of Kicad. Please visit http://www.kicadlib.org for details of how to contribute your symbols/modules to the kicad library. For building Kicad from source and other development questions visit the kicad-devel group at http://groups. yahoo.com/ group/kicad- develYahoo! Groups Links
[kicad-users] Re: two supply voltage and Vcc
It sounds good. But unfortunately, it does not solve all problems I have. More difficult problem I have is inserting 3-terminal capacitor between VCC line and VCC pins of ICs. Has no one used such device on KiCad? - Mao --- In kicad-users@yahoogroups.com, Wei Lu wei...@... wrote: What about edit the invisible pins and rename them to VDD instead of VCC? Wei
[kicad-users] Re: two supply voltage and Vcc
Hi Robert,
I have no idea why the result is different. My example is really simple;
Place one 74HC00, name it U1, click Show hidden pins, and connect its Vcc to
+3.3V power port and GND to GND.
Place one 74HC04, name it U2, connect its Vcc to +5V power port and GND to
GND.
Then, generate the netlist, and open it.
The result is here;
{ Pin List by Nets
Net 1 +5V +5V
U1 14
U2 14
Net 2 GND GND
U2 7
U1 7
}
- Mao
--- In kicad-users@yahoogroups.com, Robert birmingham_spi...@... wrote:
Normally I just connect the power supply pin(s) of each chip to a power
port (fourth button down, right-hand toolbar), selecting a different
pin name for each power rail. This works perfectly for me. It sounds
like you're doing the same, but since it doesn't work for you I presume
you're doing something different. If it helps, my last board used VCC,
VAA, and GNDPWR.
Regards,
Robert.
[kicad-users] Re: two supply voltage and Vcc
Hi Robert, Yes, I think it's really strange too... Properties of the power ports are; +3.3V power port: Ref: #PWR04 Value: +3.3V +5V power port: Ref: #PWR03 Value: +5V I'm using Build 20090216-RC5. Do you need more information? thanks and regards, - Mao --- In kicad-users@yahoogroups.com, Robert birmingham_spi...@... wrote: Strange. Can you please right click on each of the two power ports (3V3 and 5V), select Edit Component...Edit, click the Fields tab, and report back the text in the Field Text box when you select Ref and Value from the Field to Edit box? I'm using V20080825c. Which version are you using? Regards, Robert.
[kicad-users] Re: two supply voltage and Vcc
Mao,
I am new to KiCad so this is just a guess, but have you placed all the sections
of the 74HC00 that is connected to 3.3v? This part has sections A-F, and each
section has the hidden VCC and Gnd pins. If you have not placed all the
sections on the schematic, perhaps KiCad is picking up the VCC from the unused
sections and assuming they are all tied together. You might try placing all 6
sections of the 3.3v 74HC00 on the schematic and show and connect VCC on all 6
to 3.3v.
Jeff
--- In kicad-users@yahoogroups.com, yamamaya_com yn...@... wrote:
Hi Robert,
I have no idea why the result is different. My example is really simple;
Place one 74HC00, name it U1, click Show hidden pins, and connect its Vcc
to +3.3V power port and GND to GND.
Place one 74HC04, name it U2, connect its Vcc to +5V power port and GND to
GND.
Then, generate the netlist, and open it.
The result is here;
{ Pin List by Nets
Net 1 +5V +5V
U1 14
U2 14
Net 2 GND GND
U2 7
U1 7
}
- Mao
--- In kicad-users@yahoogroups.com, Robert birmingham_spider@ wrote:
Normally I just connect the power supply pin(s) of each chip to a power
port (fourth button down, right-hand toolbar), selecting a different
pin name for each power rail. This works perfectly for me. It sounds
like you're doing the same, but since it doesn't work for you I presume
you're doing something different. If it helps, my last board used VCC,
VAA, and GNDPWR.
Regards,
Robert.
[kicad-users] Re: two supply voltage and Vcc
Hi Jeff, Hmm... It sounds reasonable. I tried to do like that, that is; place 4 units of 74HC00 and connect all VCCs of them to +3.3V, but unfortunately nothing improved. Also, it really sounds reasonable, but inappropriate. It may make schema too complicated. - Mao --- In kicad-users@yahoogroups.com, jeffs_cc j...@... wrote: Mao, I am new to KiCad so this is just a guess, but have you placed all the sections of the 74HC00 that is connected to 3.3v? This part has sections A-F, and each section has the hidden VCC and Gnd pins. If you have not placed all the sections on the schematic, perhaps KiCad is picking up the VCC from the unused sections and assuming they are all tied together. You might try placing all 6 sections of the 3.3v 74HC00 on the schematic and show and connect VCC on all 6 to 3.3v. Jeff
