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For a simple Solar Charging Can i use only a diode in between the battery and solar panel? When the battery is fully charge will the current flow stop or do i need to cut it off my self?
Re: 50Mhz Square Wave
yup the saw tooth is 50Mhz... i am trying to get vhc but fail to find 1. I am using 74AS now. I will try to find 74VHC if possible. Thanks :D Try to find one and c how it goes.
I try to generate a 50Mhz ttl square wave but the outcome was not very good. Any one try to make such wave before? the rise time and fall time i have turn it into a saw tooth. :(
I have did a JDM as follow. Can anyone comment on it? Thanks very much. the switch is to switch between 40 and 18 pin PIC.
attached is the picture. Have a look.
icic. thx very much hope to hear from u soon. Too bad i got my own LCD... din use the one that come with the board... :(
Added after 2 hours 6 minutes:
I foung the ic datasheet i c for the Voltage translator h++p://www.alldatasheet.com/datasheet-pdf/pdf/65947/IDT/IDTQS3384Q.html
It seems...
icic. So as for the driving of LCD. U done b4? can it be drive using the 5v port? the datasheet specific that it need 3.5 at least to indicate high. I am using an apex 20K200efc484-2X board. Have any experience on it?
Thanks for ur support till now.
yup... i am using the 5v io pin. the output voltage still is at 3.3. As for V7 if i pull it low... This is what i did. Inside program i do V7 <= '0' where v7 is mapped to the v7 pin. When switch it to 1 the whole port wont function. As for the output voltage i still get aroung 3.2 to 3.3... Wat...
I have a problem regarding this board. Its on the jp12 which is suppose to be a 5v prototype port. It suppose to output 5v but then the port only put out 3.3v. so how suppose to drive the output to 5 excpet for adding an external converter? The LCD i am driving need at least 0.7Vdd for high...
car ignition coil
Have anyone used this before to generated spark? I am doing something sort of like lighter. Have to light a fire using a car ignition coil. I never use an ignition coil and 1st time to deal with power circuit as ussual i only do digital low power circuits. I use the cicuit...
petrify debian
Are there any electronic application for debian distro of linux?... i just start using linux so are there any program out there for simuation, pcb drawing... and uc (8051 or pic) programming?
Stepper Motor
so by measuring the things i can find out which winding is connected. Btw how to tell the max torque of each motor.. or do all the motor have the same max torque. I got most of my stepper out of old printers.
how to measure the torque in stepper motor
I got a lot of stepper motor but cant seem to find the modal for it. Most of it have 4 line and some got 5 and 6. Whats the difference between them?....
I got an UC3637N or UC3717AN driver to drive it. Using 8051 to drive the stepper
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