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AD9850 instead of Raduino
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Billy Shepherd
开云体育I purchased my Bitx40 last December. Everything works great. I’m trying to use items I already own to build a DDS. I connected a AD9850 with an Arduino Mega 2560. I added a contrast control, an LCD display and a rotary encoder. I used the sketch found here: The DDS works. I connected my DDS to the DDS pins on the Bitx40 near L4. What changes do I need to make with the pre-Raduino Bitx40 to use a DDS? Remove L4? Keep or change caps in original VFO? ? Thanks in advance, Billy ? ? ? |
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I removed C93 and L4.? Works perfectly. 73 - Ben On Fri, Apr 7, 2017 at 2:28 PM, Billy Shepherd <billy.shepherd@...> wrote:
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Billy Shepherd
开云体育Would you think the whole circuit behind C93 and L4 is ignored? Also, did you not remove the tuning pot? Do you use the rotary encoder to tune? ? From: [email protected] [mailto:[email protected]]
On Behalf Of Ben Kuhn
Sent: Friday, April 07, 2017 3:41 PM To: [email protected] Subject: Re: [BITX20] AD9850 instead of Raduino ? I removed C93 and L4.? Works perfectly. ? 73 - Ben ? On Fri, Apr 7, 2017 at 2:28 PM, Billy Shepherd <billy.shepherd@...> wrote: I purchased my Bitx40 last December. Everything works great. I’m trying to use items I already own to build a DDS. I connected a AD9850 with an Arduino Mega 2560. I added a contrast control, an LCD display and a rotary encoder. I used the sketch found here: The DDS works. I connected my DDS to the DDS pins on the Bitx40 near L4. What changes do I need to make with the pre-Raduino Bitx40 to use a DDS? Remove L4? Keep or change caps in original VFO? ? Thanks in advance, Billy ? ? ? ? |
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Yes, it's ignored.? I actually have a pre-raduino and post-raduino version and this is the only difference I could spot.? I'm using a 10-turn pot connected to the Arduino to tune similar to the raduino supplied with the later kits. On Fri, Apr 7, 2017 at 2:44 PM, Billy Shepherd <billy.shepherd@...> wrote:
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Billy Shepherd
开云体育Okay thank you! ? From: [email protected] [mailto:[email protected]]
On Behalf Of Ben Kuhn
Sent: Friday, April 07, 2017 3:49 PM To: [email protected] Subject: Re: [BITX20] AD9850 instead of Raduino ? Yes, it's ignored.? I actually have a pre-raduino and post-raduino version and this is the only difference I could spot.? I'm using a 10-turn pot connected to the Arduino to tune similar to the raduino supplied with the later kits. ? On Fri, Apr 7, 2017 at 2:44 PM, Billy Shepherd <billy.shepherd@...> wrote: Would you think the whole circuit behind C93 and L4 is ignored? Also, did you not remove the tuning pot? Do you use the rotary encoder to tune? ? From:
[email protected] [mailto:[email protected]]
On Behalf Of Ben Kuhn ? I removed C93 and L4.? Works perfectly. ? 73 - Ben ? On Fri, Apr 7, 2017 at 2:28 PM, Billy Shepherd <billy.shepherd@...> wrote: I purchased my Bitx40 last December. Everything works great. I’m trying to use items I already own to build a DDS. I connected a AD9850 with an Arduino Mega 2560. I added a contrast control, an LCD display and a rotary encoder. I used the sketch found here: The DDS works. I connected my DDS to the DDS pins on the Bitx40 near L4. What changes do I need to make with the pre-Raduino Bitx40 to use a DDS? Remove L4? Keep or change caps in original VFO? ? Thanks in advance, Billy ? ? ? ? ? |
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Billy Shepherd
开云体育What freq should I be sending to the Bitx40 board....enough so 12mHz becomes 7.08-7.20 after subtraction? (4.92-ish?). Not getting signals. Just solid tones every now and then as
I tune the AD9850. From: Billy Shepherd
Sent: Friday, April 07, 2017 4:03 PM To: '[email protected]' Subject: RE: [BITX20] AD9850 instead of Raduino Okay thank you! ? From: [email protected] [mailto:[email protected]]
On Behalf Of Ben Kuhn ? Yes, it's ignored.? I actually have a pre-raduino and post-raduino version and this is the only difference I could spot.? I'm using a 10-turn pot connected to the Arduino to tune similar to the raduino supplied with the later kits. ? On Fri, Apr 7, 2017 at 2:44 PM, Billy Shepherd <billy.shepherd@...> wrote: Would you think the whole circuit behind C93 and L4 is ignored? Also, did you not remove the tuning pot? Do you use the rotary encoder to tune? ? From:
[email protected] [mailto:[email protected]]
On Behalf Of Ben Kuhn ? I removed C93 and L4.? Works perfectly. ? 73 - Ben ? On Fri, Apr 7, 2017 at 2:28 PM, Billy Shepherd <billy.shepherd@...> wrote: I purchased my Bitx40 last December. Everything works great. I’m trying to use items I already own to build a DDS. I connected a AD9850 with an Arduino Mega 2560. I added a contrast control, an LCD display and a rotary encoder. I used the sketch found here: http://www.ad7c.com/projects/ad9850-dds-vfo/ The DDS works. I connected my DDS to the DDS pins on the Bitx40 near L4. What changes do I need to make with the pre-Raduino Bitx40 to use a DDS? Remove L4? Keep or change caps in original VFO? ? Thanks in advance, Billy ? ? ? ? ? |
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Billy Shepherd
4.88 - 4.92
It works! ________________________________________ From: Billy Shepherd Sent: Monday, April 17, 2017 10:03 AM To: '[email protected]' Subject: RE: [BITX20] AD9850 instead of Raduino What freq should I be sending to the Bitx40 board....enough so 12mHz becomes 7.08-7.20 after subtraction? (4.92-ish?). Not getting signals. Just solid tones every now and then as I tune the AD9850. From: Billy Shepherd Sent: Friday, April 07, 2017 4:03 PM To: '[email protected]' Subject: RE: [BITX20] AD9850 instead of Raduino Okay thank you! From: [email protected] [mailto:[email protected]] On Behalf Of Ben Kuhn Sent: Friday, April 07, 2017 3:49 PM To: [email protected] Subject: Re: [BITX20] AD9850 instead of Raduino Yes, it's ignored. I actually have a pre-raduino and post-raduino version and this is the only difference I could spot. I'm using a 10-turn pot connected to the Arduino to tune similar to the raduino supplied with the later kits. On Fri, Apr 7, 2017 at 2:44 PM, Billy Shepherd <billy.shepherd@...<redir.aspx?REF=PHGfFL4d6TL5eCR4vKC_IYUK1YtQkyfHAgoLwYvWkt4mPEkImoXUCAFtYWlsdG86YmlsbHkuc2hlcGhlcmRAYmFydGhvbG9tZXcuaW4uZ292>> wrote: Would you think the whole circuit behind C93 and L4 is ignored? Also, did you not remove the tuning pot? Do you use the rotary encoder to tune? From: [email protected]<redir.aspx?REF=1QhDHM94imIWpZSTha2YnfyDnvDZILjJjF7sbiQf-y4mPEkImoXUCAFtYWlsdG86QklUWDIwQGdyb3Vwcy5pbw..> [mailto:[email protected]<redir.aspx?REF=1QhDHM94imIWpZSTha2YnfyDnvDZILjJjF7sbiQf-y4mPEkImoXUCAFtYWlsdG86QklUWDIwQGdyb3Vwcy5pbw..>] On Behalf Of Ben Kuhn Sent: Friday, April 07, 2017 3:41 PM To: [email protected]<redir.aspx?REF=1QhDHM94imIWpZSTha2YnfyDnvDZILjJjF7sbiQf-y4mPEkImoXUCAFtYWlsdG86QklUWDIwQGdyb3Vwcy5pbw..> Subject: Re: [BITX20] AD9850 instead of Raduino I removed C93 and L4. Works perfectly. 73 - Ben On Fri, Apr 7, 2017 at 2:28 PM, Billy Shepherd <billy.shepherd@...<redir.aspx?REF=PHGfFL4d6TL5eCR4vKC_IYUK1YtQkyfHAgoLwYvWkt4mPEkImoXUCAFtYWlsdG86YmlsbHkuc2hlcGhlcmRAYmFydGhvbG9tZXcuaW4uZ292>> wrote: I purchased my Bitx40 last December. Everything works great. I’m trying to use items I already own to build a DDS. I connected a AD9850 with an Arduino Mega 2560. I added a contrast control, an LCD display and a rotary encoder. I used the sketch found here: <redir.aspx?REF=P-W1P0KraK3s4mCn-3m_M08Qe1gQU9z4vYyNFV8KtawmPEkImoXUCAFodHRwOi8vd3d3LmFkN2MuY29tL3Byb2plY3RzL2FkOTg1MC1kZHMtdmZvLw..> The DDS works. I connected my DDS to the DDS pins on the Bitx40 near L4. What changes do I need to make with the pre-Raduino Bitx40 to use a DDS? Remove L4? Keep or change caps in original VFO? Thanks in advance, Billy |