2.4 modules discontinued!

Like B&Q for homebrew radios
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Al Clark
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Joined: 17 Aug 2018, 13:40

Lemon DSMP Module

Post by Al Clark » 01 Jun 2020, 16:34

I sent an email to Lemon asking about their DSMP Module and received the reply shown below this morning. It sounds like it is close to being released.

The transmitter module is being tested by the hobbyists from RCG. I have just got a report from them. Please stay tuned in RCG or check our website again for availability. Thanks!

Best Regards,

Lemon Rx Officer


I ordered a 4-in-1 Module from Banggood April 18th, but have not received it yet, and the tracking number has no information, so I think the module is probably still in China somewhere. I have good experience with Lemon receivers so I think I would prefer to use Lemon's DSMP Module anyhow.
Al Clark

stuart mackay
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Re: 2.4 modules discontinued!

Post by stuart mackay » 10 Jun 2020, 12:02

Hi Al, did your BG 4 in 1 arrive? Mine have, both proved more simple to use without the frequency tuning that Jumper requires to work with FrSky & Corona.

Mike Kitchen has figured out a firmware workaround for those using a Jumper without a taranis! Am sure Mike will be along soon to tell us more.

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Al Clark
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Re: 2.4 modules discontinued!

Post by Al Clark » 24 Jun 2020, 23:57

Stuart,

Yes my 4-in-1 finally arrived after more than 7 weeks. I'm just now fashioning a mount for it inside my 1974 RS 6CH SS TX. Glad to hear no tuning is required.
Al Clark

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Al Clark
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4-in-1 Module Input Identification

Post by Al Clark » 25 Jun 2020, 00:06

Folks I have the 4-in-1 multi purpose module from Banggood. I've been looking it over and I think I've identified the inputs from my decoder. However I'd like to verify I'm correct. In the photo, on the upper left, it appears their are 4 inputs annotated as GND (ground); TX (transmitter); RX (receiver but not sure if it actually says RX); and Vin (voltage in). I believe I should use the GND and Vin
4-in-1 2.4 Module.jpg
for the power, and use the TX for the PPM coming out of the decoder. If anyone else has used this module I'd appreciate knowing if I'm correct.
Al Clark

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Phil_G
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Re: 2.4 modules discontinued!

Post by Phil_G » 25 Jun 2020, 01:51

I havent used one of these Al so I'm not sure but I doubt thats the case. Surely its the conventional JR connector in the diagonally opposite corner? The tx and rx will be for serial I/O
Others who have used it will be along soon I'm sure.
Cheers
Phil

Tobe
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Re: 2.4 modules discontinued!

Post by Tobe » 25 Jun 2020, 08:09

You are correct Phil in your assumption.

Martin
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Re: 2.4 modules discontinued!

Post by Martin » 25 Jun 2020, 11:06

Yes, use the (standard JR) black connector in the bottom right of your photo.

There are 5 pins. Reading from the top:

1. CPPM signal to module.
2. You don't need to use this one. May have been an RF-power-level signal on old 35MHz modules (for driving a 'transmitted power' meter which some transmitters had instead of/as well as, a battery meter.
3. Battery positive, power supply.
4. Ground.
5. Again, you don't need to use this pin which is a hangover from long-wire antenna modules - this was the R.F. output pin from the module, connected to the transmitter telescopic antenna.

I'm not sure which pin computer radios use when they're communicating with modern modules serially - maybe it's the same pin 1, or maybe it's pin 2 and/or 5? In any case, for the normal PPM signal, you only need to use (counting from the top) pins 1, 3, and 4.

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Al Clark
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Re: 2.4 modules discontinued!

Post by Al Clark » 25 Jun 2020, 16:53

Martin, Tobe, Phil,
Thanks for the information guys!
Al Clark

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