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Dear all ,
hope you are doing fine ,
I have keyboard with ribbon cable , which it has 32 pins to atemga328p and read multi input in same time , i read about CD74HC4067 mux/demux , but the issue with this chip i only read one single input at time , i mean if the pin1 and pin13 rise up , i can...
dear all ,,
i start design my pcb project , i lock for my power side in my project an DC to Dc convertor IC , with battery input and same time it can be charge if DC connect to my circuit or start feed the circuit if there no DC input , the current i look for is 1A ,
i know with some ic...
Hi every body ,
now when I make pcb and send to be manufacture , I receive it but all via are exposed and if some metal touch to via it will be short it, my question is how to cover this vias with mask or something using ISIS ARES
this website explain the tenting for you ..
**broken link...
thanks you for replay .
but $75000:shock::shock::shock::shock: , I don't plan to go there , my budget is between $5000-$20000 , yes I already make my pcb by some manufacture in china and it cheap , but as the prototype test . it good to have good cnc machine ,
also did you see the first motor...
HI all ,
first off all I do all my prototype PCB by chemical process, Now I want to move on to more advance pcb milling machine , I see two company now but I still want others experience ,
the specification of the milling machine it should with good speed , double layer , mount components...
thank you for your replay , I will consider the d case in my design , I have two question please
1- regard the sensor , the GPS and GSM modem will be in sleep mode , when the sensor (I need ) detect the motion it will run the GPS and the modem ,
2- your design look great man , can you...
Hi every one ..
I plan to design small GPS trucker using GPS reciver and gsm modem (sim900) with pic18f microcontoller , in my prototype board , every thing work fine but my question:
what is best alternative way for removing 1000uf in power supply section for the modem ? it so big , almost...
Hi all
I bought wavetrend RFID l-Rx201 , for long range RFID tag reader , and it small and work great in my PC.
now I come to integrated to micro controller (pic18f25k22) and use mikroc as a compiler .
the red box is one packet that shows the tag information and receiver info . under green...
HI All ,
I plan to make sms,tcp tracker with pic18 microcontroller.
I already make this plan and it work fine in testing process using pic18lf25k22 and gps ls20031. and sim900 form simcom to send the longitude and latitude with time, speed .. etc. But even now, I am not convinced with...
Hi All ,
One question for electronic expertise,
I have PIC18f25k22 , which is a great microcontroller, I made small project which is connect to GSM modem and temperature sensor , the project will send me SMS every 20 Minutes, the pic18 will read temperature them send sms using gsm modem ...
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