Posted on December 28, 2018

LP801B PDF

14 Jun It’s always nice to see hackers pick up stuff headed for the landfill and put it back in action with a quick repair and upgrade. [Septillion] found a. LPB Datasheet, LPB PDF, LPB Data sheet, LPB manual, LPB pdf, LPB, datenblatt, Electronics LPB, alldatasheet, free, datasheet. Product Detail: Offer LPB LP, LP, LPB from Hong Kong Inventory.

Author: Kirn Daikinos
Country: South Sudan
Language: English (Spanish)
Genre: Literature
Published (Last): 3 January 2005
Pages: 231
PDF File Size: 19.57 Mb
ePub File Size: 16.64 Mb
ISBN: 339-6-49096-768-7
Downloads: 30959
Price: Free* [*Free Regsitration Required]
Uploader: Gokora

Running from lower voltages may be possible but the RF circuit definitely needs to be retuned. The circuit includes an auto ranging as well as reset switch and produces very accurate and stable readings. The relay control from the kp801b was routed via the microcontroller. 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.

Working on it when it is powered up requires extreme caution. At least 1 5. 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.

It took a few more iterations to get the delay “just right” but now it works perfectly. The board runs off a 23A 12 volt stack battery. If I knew in advance that I’d be able to do this I would’ve designed a much smaller board.

When I got mine to work I was using the datasheet-correct count so I didn’t test with that. The output waveforms can be both amplitude and frequency modulated.

LP801B – Encoder / Decoder

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. Some component leg that I forgot to 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.

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 when I made the board Not being patient enough however I started looking around to see if anyone’s emulated this chip on a microcontroller before.

  ADVANCED CONCEPTS IN OPERATING SYSTEMS BY SINGHAL AND SHIVARATRI PDF

The building’s basically a 1-room apartment so this works out great with the remote. His initial tests showed that the AC outlet and its remote could be revived, so he set about exploring its guts.

Had to put in 3 zeners as the PT operates directly from 12v which the attiny can’t do. It is an irreplaceable tool for troubleshooting lp801bb repairing electronic equipment by determining performance and health lp801bb electrolytic capacitors. Has a few address and data pins and generates a signal on the lp801bb pin based on the configuration of those at the time the enable pin is connected to ground. It also analyzes transistor’s characteristics such as voltage and gain.

The transmit remote was a quick fix — changing the DIP switch selected address bits from being pulled low to high and swapping the On and Off buttons to make it compatible with the other outlets. This is a remote controllable light switch that comes with an RF remote.

Arduino Prototype uses all standard through-hole components for easy construction, two of which are hidden underneath IC socket. Note below on the jumper blocks: Then with the cool Soundcard Oscilloscope to which I could adapt my pulse duration. The meter is a perfect addition to any power supply, battery chargers and other electronic projects where voltage and current must be monitored.

Since the various brands in use have a slightly different logic, it needed some rework to make them compatible. Which means I have to get up and look for it which is effectively as much of an annoyance as it was meant to solve. 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. L8p01b, he breadboarded a small circuit around the PIC12F microcontroller to take care of the data and address lp80b.

It’s small, power efficient, yet customizable through onboard 2 x 7 perfboard that can be used lp80b connecting various sensors and connectors. Besides, he wanted to be able to manually switch the AC outlet.

(Datasheet) LPB pdf – Éî ÛÚ ÊÐ Áª µÂ ºÏ ΢µç×ÓÐÏÞ ¹« ˾ TEL£º Encoder / Decoder (1-page)

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. Working on the AC outlet requires far more care and safety.

  LE JOUEUR DOSTOIEVSKI PDF

By using our website and services, you expressly agree to the placement of our performance, functionality and advertising cookies. Lp801 did find a puncture mark on the positive lead so that must have been it. After reseating the board in ,p801b box and making sure the battery wires don’t pass under any component legs it hasn’t happened again.

It took several modifications to my original board to get it working with the attiny. At this point I tested my board and while lp80b1 the variable cap it suddenly became dark in the room: 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.

LP801B Datasheet PDF

I put it in a small electrical box with 2 push-buttons and installed it in an easy to reach location from the bed. So I took the code at http: After some wasted time I caved and connected the original remote’s encoder chip data output pin to the microphone input of my netbook. These remote AC outlets consist of an encoder chip on the remote and a corresponding decoder chip on the outlet, working at MHz.

I popped the original remote open to see what I was dealing with. 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 projection screens and anything else you can think of.

This LC Meter allows to measure incredibly small inductances making it perfect tool for making all types of RF coils and inductors. 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.

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 the wrong place all the time. Turns out, several people did.

The only light switch is across the room from my PC and it’s a pretty large room.