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Then hack into the remote control, and wire into the buttons that you need to operate the receiver. The easiest way to do this, without trying to figure out the input circuit of the remote, is to wire reed relays across the contacts note that the buttons probably don’t actually have contacts in themselves, but may operate dome switches or some other type of switch contact located on the PCB of the remote controller.
If you want to get fancier, and use less relays, you will probably find that the conact switches are arranged in some sort of array for example, 6×6 would use 12 wires, but would allow for 36 buttons.
Datasheet for this processor(M CPU (MIPS architecture)) – Electrical Engineering Stack Exchange
So then you just have to control the appropriate two wires for each button. In either case, I would attach a couple of wires to a mm3329e button first such as Muteand try connecting them manually and observing the result.
Beside reed relays, it would probably be possible to go all solid state using FETs, but you would need to reverse engineer more of the circuit. Here is the last place you would look for such information: You won’t find the datasheet, but you will find the source code of a driver for a DVB card with the same tuner.
You just have to adapt the code.
The code I will provide is adapted from ix The following pseudo-code is just an adaptation of the original code Copyright Dxtasheet Igor M. I only removed specific kernel routines and rewrote the I2C communication routines.
ALI – M3329-B1 – PWM STEP-UP DC/DC CONVERTER WITH VOLTAGE REGULATOR AND DETECTOR
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Would you like to answer one of these unanswered questions instead? Home Questions Tags Users Unanswered. How do I operate a tuner of digital satellite receiver using a microcontroller?
I want to operate this datqsheet of my digital satellite receiver. This is the tuner: They wrote some numbers and words around of the tuner: I think that’s probably just the analog front-end to the tuner; the large “ALi” IC will contain vital parts of the tuning and decoding process.
What do you datasheey by “operate”, anyway? From the look of the two orange capacitors above and on the right the power transformer, you had better finish your project soon. No, please don’t take more photos.
M D1 – ALI – IC Chips – Kynix Semiconductor
A bulging electrolytic capacitor indicates a higher probability of failure. Your board appears to be 5 or 6 years old so that’s not unusual, but those capacitors may fail sooner rather than later.
While tcrosley answer is a good avenue to look into, it’s way more complicated than needed. You don’t even need a second control, or catasheet or anything.
Most standard remote controls can be emulated in software. Arduino, datawheet launchpads, any modern microcontroller can do it quite easily. But that said, it seems like OP might be looking into directly accessing the tuner, not the entire receiver.
OP hasn’t really clarified. Replace with your code. Cornelius 4, 2 18