Electronic Appliance Control by a Phone Call (DTMF)
Electronic Appliance Control by a Phone Call (DTMF)
($2 for 10 PCBs & $6 for stencil: https://jlcpcb.com
#1# cm8870 ic
#2# um 2003 ic
#3# led green red and yellow
#4# screw terminal
#5# 7805 regulator ic
#6# 2.2k resistor
#7# 300k resistor
#8# 27 pf
#9# 104 pf
#10# 100k resistor
#11# 4007 diode
#12# 3.58 Mhz crystal oscillator
#13# 220 mfd capacitor
diagram and PCB Layout
http://ietdiscover.blogspot.com/2018/10/dtmf.html
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Can you make specific one means one number will turn on first relay and if we again type one number first relay gets off
Super project…..
Super
Please upload short circuit protector diagram. We wait for the circuit.
Sir, make a ldr based night automatic light with adjustable sensitivity (use pot/potentiometer) for running 220v ac device (with relay).
Dear very important question do we need balance we can run it with 0 balance? Plz replay
sir How to make a ardino finger print door lock with green led screen
If there is no one near the mobile conected to board
How can we operate
Can we use 3 or 4 channels at a time for 2 lights and 2 fans ??? Plz and me
bapok cricuit……. dada nice project
Plz ans me
who will receive the call of attached ckt.
Can you pls pls pls make mobile control water pump without and gsm and arduino
I love your videos, you are so creative. thanks for sharing.
Et ur awsome….pls make a video on ir remote controlled fan speed regulator without relay..
Pls share this project as soon as possible…
you told we can control from anywhere but someone should be there near to answer calls manually right?
can be done without using a cellphone on the receiver side?
Great
So, you must accepting a call first to activation the led?
Please share this paper to my mail
Nice presentation
👌👌👌
sir please send me gerber file
Wow!!
I am from india. Where to buy pcb ? Please watapp me. 917736743113
I want to control AC power is it possible? If possible then make a video on it.
Awesome sir,very useful ……
very useful circuit. all components and circuit diagram should list separably.
use your another intro…..pls
Awesome sir
Make a variable for DC voltage. 0 volts to highest volts 12or 25 48 …………1000 ????
Make a transformer less 12v power supply.
But I want to run all devices at a time….how?
You have to need some rectification on this project. Who receive the phone for wireless DTMF connection??? The will automatically receive after incoming call then you can the circuit wirelessly. How can we do that??
Nice bro
Can yo reveal how much JLCPCB gave you to promote their service ??
Phone receive Har bar karna padega
friends please support my channel
https://www.youtube.com/watch?v=9n84wKIr0do
Plz can u give me rgb controller ckt pcb layout
Can i use icUN2003APG
السلام عليكم
****SASKIR TUBE***
إذا كنت من محبي الدوائر الكهربائية
إذا كنت من محبي الاختراعات التي ستفجر عقلك!!!!!!!!
انتقل الآن الي قناتنا
*****وشكرا******
Circuit dijia na plz
Agr files ko permissions ni denii thi to video me hi bta dete
False
DTMF ko aur kis name sa bole skte h
Nice one
I wish Indians would get into this field around where I live instead of scamming people with fraudulent tech support and then charging people to get their data back.
wow! 🙂
Hey friend; it’s a awesome project but we hate to use IC’s. We love to Apply Microcontroller because it’s a efficient than IC’s…………….
Sir ,i am unable to get this PCB sir ,plz help me