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May 04, It works in conjunction with a companion transmitter chip, LM, to provide four channels of control. Posting Quick Reply – Please Wait. Return to DIY Electronics. What do you use as HF transmission? Thank you for your quick replies! Sign up now to remove ads between posts. Sorry if this is a newbie question, which it probably is. Something like thisand shop? Files View all Files in thread. P Having clocks in the circuit would be fine though. Even though it 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 Posted by Magranon.

National Semiconductor LM Series Datasheets. LM, LMN Datasheet.

I found a few circuits, but I am a bit unsure about the usage of these ICs. Pin 6 appears to be used to determine the number of transmitted channels in a prospective system. 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. Images View all Lm11872 in thread Views: Images View all Images in thread.

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

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. Any micro-controller having 3 analog inputs and 3 digital outputs can do the job. Theory of operation and suggested circuits are provided in both data sheets. Here is the companion data sheet for datashedt LM transmitter chip. So, there is not real schematics, but only programming examples.

Looking for 3 channel circuit diagram. Thanks for informing me about the IC, I’ll definitely be using it for my project. May 06, Bruce Abbott We want These lm187 are well suited for use at 27, 49 or 72 mhz. I’ve been searching for many hours and have yet to come upon any feasible circuits. The chip does a lot, but you still need to provide support circuitry to complete a project. Even using the IC, it should provide plenty to do.

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Welcome to the forum.

(PDF) LM1872 Datasheet download

If anyone could point me to any electronic schematics or any useful information in general, I would be lm18722 appreciative. Yeah, forgot to state that I’m looking to be using 27mhz for the build. Some of those may have operated at 27mhz. Last edited by whitecrest; May 04, at Originally Posted 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.

Datasheet «LM1872»

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.

Last edited by Magranon; May 04, at The Arduino boards can also do that. The only criteria of the build 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.

I’m assuming this forum is the right place to ask these kinds of questions, but if it isn’t I apologize.