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IR controller
thanks for all ur reply I finish my IR remote control :D
FYI, I use a 555 circuit to generate a 38kHz and NAND it with a PIC that send out serial data.
on the receiver side, I use a TSOP2238 (38kHz) IR detector, the output go through a inverter and go to a PIC. I think this way is...
IR controller
I kind of understand about the RC5, the problem is that I don't know how to read that edge, for example if I use an PIC16f877 I don't know how to make the PIC understand that egde. I saw some sites they let the output from IR detector go through op amp and control a relay, but I...
IR controller
at first I'm intend to test the circuit by turning on off a Led light. when I switch on the IR transmitter the Led will switch on -> off or off -> on
I'm working on a project using IR Led and IR detector to control a relay.
I created a circuit using 555 timer to create 38Khz square wave so that my IR Led can transmit at 38Khz.
Can anyone explain to me what kind of signal that will be output from the IR detector? As I saw from the...
sms controlled project
thanks for ur reply. I have searched for some modem n their price are all 100+ but for my project I can afford only around 50$, can u rec me some cheap modem
circuit diagram gsm controlled relay switch
hi guys, I'm also thinking about a project dealing with sms and PIC. Basically, my idea is that when someone send me an sms, my PIC will increase count variable and then automatically send back a sms with the count value. Can someone enlighten me a...
lcd 16x2 4bit
thanks for all ur reply :D finally my LCD can work
the prob is that I connected RS pin wrongly :D
the point that blueroomelectronics is also correct. If we don't put a potentionmeter for changing the contrast sometimes we can not see the displayed character
pic16f877 lcd
hi guys, I'm just an newbie with PIC
I'm trying to control the LCD 16x2 (model SC1602-B) with a PIC 16f877
The simulation of my code on the Proteus 7 can run but when I work with real thing it couldn't print out anything
please help me out, below is my code
Added after 5...
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