Telemachus
New Member
As I am sure several of you are apt to do, I intercepted this egg timer before my wife could throw it away. Lux brand ET50, unfortunately, I can't find any FCC id to lookup schematics.
The piezo buzzer stopped working, but the rest of the electronics seem to work well, and when attached to another buzzer, it works fine (I won't tell her that part, as I now have plans for it).
I plan to intercept the output to the piezo with a small PIC, which when the timer goes off, it will ground the shutter button on a canon SLR camera, and then trigger the reset button on the timer to start counting again.
The LCD, microcontroller, and buzzer all work off of a single 1.5 volt AAA battery. I don't see any MAX1674 or MAX7176 that would up convert to 5V, and I can't tell what the IC is without removing the black plug, which might also rip off the chip. I have tested with the voltmeter all around, and it is 1.5volt throughout. Which mictrocontroller do you think they are using at 1.5 volts.
The piezo buzzer stopped working, but the rest of the electronics seem to work well, and when attached to another buzzer, it works fine (I won't tell her that part, as I now have plans for it).
I plan to intercept the output to the piezo with a small PIC, which when the timer goes off, it will ground the shutter button on a canon SLR camera, and then trigger the reset button on the timer to start counting again.
The LCD, microcontroller, and buzzer all work off of a single 1.5 volt AAA battery. I don't see any MAX1674 or MAX7176 that would up convert to 5V, and I can't tell what the IC is without removing the black plug, which might also rip off the chip. I have tested with the voltmeter all around, and it is 1.5volt throughout. Which mictrocontroller do you think they are using at 1.5 volts.