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So, there is not real schematics, but only programming datashest. The chip does a lot, but you still need to provide support circuitry to complete a project. Yeah, forgot to state that I’m looking to be using 27mhz for the build. Thanks for informing me about the IC, I’ll definitely be using it for my project.

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I’m assuming this forum is the right place to ask these kinds of questions, but if it isn’t I apologize. I found a few circuits, but I am a bit unsure about datasheeet usage of these ICs.

It works in conjunction with a companion transmitter chip, LM, to provide four channels of control. Does it even matter what value they are? Pin 6 appears to be used to determine the number of transmitted channels in a prospective system. Bruce Abbott We want Thank you for your quick replies! Last edited by Magranon; May 04, at Files View all Files in thread. The datasyeet criteria of the daatsheet are that it should preferably have 3 channels and that it must be able to control the rotation of two servos and the speed of the main motor.


(PDF) LM1872 Datasheet download

Posting Quick Reply – Please Wait. Images View all Images in thread. Last edited by whitecrest; May 04, at Theory of operation and suggested lm187 are provided in both data sheets. Looking for 3 channel circuit diagram Hey everyone, I’m looking to build a simple RX and TX with encoder and decoder from scratch for an upcoming RC plane project.

Welcome to the forum. May 04, However for this receiver attached belowI have no idea what the values of B1, B2 or B3 are, nor is it mentioned anywhere on the website the image came from. P Having clocks in the circuit would be fine though. What do you use as HF transmission? Even though datashert makes my job much easier, I would also prefer to be making the whole circuit without using an IC that does everything for me: Originally Lm182 by Magranon I have no idea what the values of B1, B2 or B3 are, nor is it mentioned anywhere on the website the image came from.

If you must use discrete datasheer, look up some old Heathkit radio control circuits.


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Radio Control Receiver/Decoder

These devices are well suited for use at 27, 49 or 72 mhz. Return to DIY Electronics.

Here is the companion data sheet for the LM transmitter chip. I have no idea what the values of B1, B2 or B3 are, nor is it mentioned anywhere on the website the image came from. Images View all Images in thread Views: I’ve been searching for many hours and daatasheet yet to come upon any feasible circuits.

Originally Posted by Magranon.

LM Datasheet(PDF) – National Semiconductor (TI)

Some of those may have operated at 27mhz. Something like thisand shop? Even using the IC, it should provide plenty to do. Any micro-controller having 3 analog inputs and 3 digital outputs can do the job.

If anyone could datasueet me to any electronic schematics or any useful information in llm1872, I would be extremely appreciative. Sorry if this is a newbie question, which it probably is. The Arduino boards can also do that. Looking for 3 channel circuit diagram.