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I've got few IC from local flea market along with some other stuff. I don't know whether it's EPROM or anything else. Here is the image. Google unable to retrieve any useful information !
In first line : ATMLU114
In 2nd line : 2GB 2
In 3rd line : .0F2319
It's pin no. 2 is shorted with pin...
It's not a Chinese wireless doorbell, in fact made in India and has a good range. I've seen the circuit and seems very satisfactorily. The power I've checked is more than 15v and sufficient to drive a relay.
Here is some misc. correction in my circuit, It works fine as I expected.
I finally find the solution. It's on a Ron's site **broken link removed**. I've made changes in this circuit to suit my project.
Actually it's basic transistor latch, but it was hard for me to understand. After studying and experimenting Ron's circuit, I got the whole idea. Thanks Ron and all...
I'm trying to use my wireless doorbell to switch off my water pump. The problem is how to use the receiver signal to latch a relay. Search the net but no clear solution found !
I've driven LED from a speaker wire with transistor (doorbell receiver circuit) but don't know how to use this signal...
No, I have to check it our.
Is there any problem If I run the motor at 12 V instead of 24 V. actrully motor is rated to 24 V.
I'll try our as you told here.
Thanks
I am using ULN2003 to run Mitsumi M35SP-9 stepper motor salvage from old injket printer. The motor is 5 wire unipolar, with 24 V and 7.5 Deg step. so it's 48 steps per revolution.
The problem is than I operate it on 12 V instead of 24 V and instead of 48 step it rotates full turn at 12 steps. I...
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