Clone SERVO CD HECD-019A for PHILIPS CDM12.1

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#82
好久不见，DSA相对于I2C控制更简单。伺服参数要很多设备检测。现在国内流行的都是VCD的源代码。很多代码没处理，前进 后退 没静音。你新做的板子还有吗？发给我试试，最近比较有空。我邮箱cndiyclub@hotmail.com

Long time no see, DSA is simpler than I2C control. Servo parameters need to be detected by many devices. Now the popular ones in China are the source code of VCD. A lot of code is not processed, forward backward is not muted. Do you still have your newly made board? Send it to me to try, I have been more free recently. I cndiyclub@hotmail.com my email
 
#85
purer said:
This is the CDM12 I made back then, without DSA control. Control I2C directly with the MCU. The output uses DIT 4192 as a digital output.
Click to expand...
In this last month, a few ideas have come to my mind. Redesign the mechanics. For example, the mechanical drawer stepper motor controlled by the adapter board elaborated by HEC-019, developed with built-in arduino atmega328 and 3 variants. One for A4988 motor operator, one with 2 SRA-12VDC-CL relays, one with 2 G6K-2F-Y DC12 micro relays. You will say if I'm crazy but the idea was born with the logic of using your project at will. All three have built-in DC voltage regulation circuits: one 12V, two 5V, and one 3.3V.
Logically, the board in question will then be connected to the Servo Board HEC-019.

Bottom Layer with Atmega328

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Top Layer with A4988

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Top Layer with Relè SRA-12VDC-CL

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Top Layer with Micro Relè G6K-2F-Y DC12

1685131418078.png
 
#92
cac liu said:
I just tested it and I made a big discovery! The board using SAA7372 uses I2C communication to be fully compatible with SAA7327! This is something I've always wanted to test, tried it today, it's the same! In other words, OM5284 can replace your P87C58! But there is a difference in wiring because the OM5284 uses SILD and RAB, just like the circuit of the CDT-713 I attached! Like datasheet, the SAA7327 is just adding some new registers to the SAA7372! The software is compatible!
Click to expand...
hello cac liu
can you send me the gerber file or from where did you get the board i want to compare with mine. I'm having problems, I can't get it to work.
Thanks
 
#94
cac liu said:
Here it is!
Click to expand...
thanks for the file!
I checked your gerber project and compared it with the CD7 schematic (DSA 1disc)-3.PDF you sent and I find an error. Pin 25 of SAA7372 on the schematic is not connected, in your Gerber file it is connected to pin 25 of SAA7372 at MCK output connector. What would MCK be, is it the MISC output, file "CD7 (DSA 1disc)-3.PDF"? Why is it connected to Pin 25 of SAA7372? Do you have a different outline of your project?

Indeed Pin 44 SAA7372 MISC in your gerber file is not connected.
 

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#100
cac liu said:
what is the problem? you have the OM5284 which marked a CDT713 on it?
Click to expand...
in addition to the fact that I wanted to understand the "setup" connections and the operation of this servo board, since I am a fan of the old Philips CDM0/1 mechanics, I have many of them, I am collecting the schematics of all the philips mechanics to have a database the as complete as possible.

For example, in the case of HECD-019A there are no schematics, or at least I have never found any on the internet.
 
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