May 2, 2020

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I was trying random numbers for the pulse duration and randomly tuning the white variable capacitor but with none of the parameters actually being correct this method was never going to work. So I took the code at http: I put it in a small electrical box with 2 push-buttons and installed it in an easy to reach location from the bed.

Headphone amplifier is small enough to fit in Altoids tin box, and thanks to low power consumption may be supplied from a single 9V battery.

The board runs off a 23A 12 volt stack battery. The meter is a perfect addition to any power datashee, battery chargers and other electronic projects where voltage and current must be monitored.

The circuit includes an auto ranging lp801 well as reset switch and produces very accurate and stable readings. It took several modifications to my original board to get it working with the attiny.

Some component leg that I forgot lp01b cut probably a resistor must have punctured the battery wire though as it drained to 10v by that night and since the circuit is basically open when none of the buttons are pressed that shouldn’t happen at all. Of course since I’m using the remote to cut the lights when I go to bed I’m basically using the remote from two places which brings with it the unavoidable annoyance of the remote being in lp801v wrong place all the time.

It can be connected to any type of stereo audio source such as iPod, Computer, Laptop, CD Player, Walkman, Television, Satellite Receiver, Tape Deck or other stereo system to transmit stereo sound with excellent clarity throughout your home, office, yard or camp ground.


LPB Datasheet PDF

You can control lights, fans, AC system, computer, printer, amplifier, robots, garage door, security systems, motor-driven curtains, motorized window blinds, door locks, sprinklers, motorized dattasheet screens and anything else you can think of. Then with the cool Soundcard Oscilloscope to which I could adapt my pulse duration. Has a few address and lp801n pins and generates a signal on the output pin based on the configuration of those at the time the enable pin is connected to ground.

I think that code has a bug though as the logic low component of the syncbit should be 31 times the short-pulse duration according to the datasheet not 7. Note below on the jumper blocks: The output waveforms can be both amplitude and frequency modulated.

RF Remote Control Light Switch

After some wasted time I caved and connected the original remote’s encoder chip data output pin to the microphone input of my netbook. I popped the original remote open to see what I was dealing with.

Which means I have to get up and look for it which is effectively as much of an annoyance as lp801v was meant to solve. He’s basically divided the datasheet units by 4 in case anyone actually looks into this The decoders may not care as It seems to have worked for him. This is a remote controllable light switch that comes with an RF remote.

It took a few more iterations to get the delay “just right” but now it works perfectly. Running from lower voltages may be possible but the RF circuit definitely needs to be retuned.

It is a very useful bench test equipment for testing and finding out the frequency of various devices with unknown frequency such as oscillators, radio receivers, transmitters, function generators, crystals, etc. It is an irreplaceable tool for troubleshooting and repairing electronic equipment by lp810b performance and health of electrolytic capacitors.

LP801B Datasheet

The only light switch is across the room from my PC and it’s a pretty large room. At this point I tested my board and while tuning the variable cap it suddenly became dark in the room: Had to put in 3 zeners as the PT operates directly from 12v which the attiny can’t do. When I got mine to work I was using the datasheet-correct count so I didn’t test with that.


Turns out, several people did. If I knew in advance that I’d be able to do this I would’ve designed a much smaller board.

LPB Datasheet – Remote Control Code IC – LAND-HOP

It’s small, power efficient, yet customizable through onboard 2 x 7 perfboard that can be used for connecting various sensors and connectors. At least 1 5. At first I didn’t think much of it and ordered some PTs and made a PCB which is basically a clone of the original remote adapted for components I had lying around or just stupidly large pads where I had no idea what I was going to use datasbeet I made the board Not being patient enough dataasheet I started looking around to see if anyone’s emulated this chip on a microcontroller before.

After reseating the board in the box and making sure the battery wires don’t pass under any component legs it hasn’t happened again. Arduino Prototype uses all standard through-hole components for easy construction, two of which are hidden underneath IC socket. This LC Meter allows to measure incredibly small inductances making it perfect tool for making all types of RF coils and inductors.

It also analyzes transistor’s characteristics such as voltage and gain. So I wanted a second controller that would basically be a stationary switch by my bed so I could leave the portable remote around the desk.

I did find a puncture mark on the positive lead so that must have been it. The building’s basically a 1-room apartment so this works out great with the remote.