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DDS AD9833 Controller for Arduino LCD Keypad Shield.

 
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O-Family

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Joined: 23 May 2010
Posts: 183
Location: Japan

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PostPosted: Mon Feb 10, 2020 2:20 am    Post subject: DDS AD9833 Controller for Arduino LCD Keypad Shield. Reply with quote

Analog Devices AD9833 is controlled by Arduino LCD Keypad Shield.
The connection to the DDS module is made up of two power lines and three SPI interfaces.
Circuit diagram
https://drive.google.com/open?id=1JXYliu83b2AujtUyNUQxdRVs0yE652_f

Operate using the character LCD and key switch mounted on the “LCD Keypad Shield” board.
Move the setting cursor displayed at the bottom of the LCD to set the output waveform and frequency.
The operation method of the key switch is described in the following "Operation Manual".
https://drive.google.com/open?id=1esjkVThUk-4vaVL1UG9J_TNtK0uRFcV8
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albertsm

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Joined: 09 Apr 2004
Posts: 5076
Location: Holland

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PostPosted: Mon Feb 10, 2020 10:47 am    Post subject: Reply with quote

Hello O-Family

Thank you for sharing your project.
The circuit and instruction pdfs are very clear. While your code is easy to read, i thank you for taking the time to make the operating manual. There are many options and this is very convenient Very Happy

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O-Family

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Joined: 23 May 2010
Posts: 183
Location: Japan

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PostPosted: Thu Feb 13, 2020 1:35 am    Post subject: AD9833 with MCP41010 and OP amp(x6). Reply with quote

Thank you Mark!

continue,
This module is equipped with MCP41010 (digital potentiometer) and Operational Amplifiers (x6) in AD9833.
Sine and triangle waves have an amplitude of up to about 3.6V, and the amplitude can be changed on the LCD screen using a digital potentiometer.

This is a practical and easy-to-use module!

Circuit diagram
https://drive.google.com/open?id=1vE4XgChqopJBAQJ6fuklBH0un3O9V0ni

Operation Manual
https://drive.google.com/open?id=17VBoasE-uPQCRK9od9ER5dWbhVoKE6cc
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albertsm

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Joined: 09 Apr 2004
Posts: 5076
Location: Holland

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PostPosted: Fri Feb 14, 2020 3:28 pm    Post subject: Reply with quote

an excellent addition.
Do you have a link for the second board? Where to purchase i mean.

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Plons

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Joined: 24 May 2005
Posts: 434
Location: Hilversum - The Netherlands

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PostPosted: Fri Feb 14, 2020 9:06 pm    Post subject: Reply with quote

https://www.banggood.com/AD9833-DDS-Signal-Generator-Module-0-12_5MHz-Square-Triangle-Sine-Wave-p-1161804.html?rmmds=search&cur_warehouse=CN

A general search for AD9833 on Banggood shows even more variations

Cheers
Nard

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O-Family

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Joined: 23 May 2010
Posts: 183
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PostPosted: Sat Feb 15, 2020 12:38 am    Post subject: Reply with quote

I purchased from China by mail order.
https://ja.aliexpress.com/wholesale?catId=0&initiative_id=SB_20200214153813&SearchText=ad9833

And now, [AD9834], [AD9850], [AD9851] programs are also under construction.
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O-Family

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Joined: 23 May 2010
Posts: 183
Location: Japan

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PostPosted: Wed Feb 19, 2020 2:32 am    Post subject: DDS AD9834 Controller for Arduino LCD Keypad Shield. Reply with quote

further,
The AD9834 has the ability to switch between two frequencies or phases with an external signal, and the test circuit uses the [FSELECT] pin to switch between the two frequencies, so FSK "Frequency Shift Keying" It is possible.

Circuit diagram
https://drive.google.com/open?id=1qqJxO--GohPUsI5i5yDWTJ-DRbDRi-m8

Operation Manual
https://drive.google.com/open?id=1_Kn6PKLaMgdcVujRCbDAC6-DdquenWs6
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