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Re: Reverse polarity diode circuit
Forgot to add?
eNay item number
282747872302
73
vince
N2AIE
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Re: Ubitx only on preorder now
Thanks for the information!!!
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Re: Ubitx only on preorder now
Jeff, I just?received a DHL tracking number via PayPal.?
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D'oh! I linked to the wrong github repo. Michael is correct, you should be using the amunters/bitx40 repo.
Many folks are using the sketch by Allard, PE1NWL.?
He has done a great job on the code and documentation for this and it has a lot
of very useful features including dual VFO, RIT, SPOT (or fine tune for SSB), CW/USB/LSB
so I suggest you check it out. This code is completely backward compatible with Farhan's
original code so it can be loaded into the Raduino without any hardware changes. However,
to take advantage of the added features there are a few simple mods that are needed but are very well documented.
The code and all documentation ?is in GITHUB at :?
Cheers
Michael VE3WMB?
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Re: Seperate group for uBITX ?
I'm glad it sounds good to you. I, for one, will not be subscribing to
the sub groups and I'd bet I'm not the only one. Then if/when it gets too
splintered and disorganized, I'll just unsubscribe.
Vince.
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Sounds to me like a sub-group would be worth trying out? It sounds like it
was built for this exact use case.
A few key points from:
/g/GroupManagersForum/wiki/Subgroups
* Members of subgroups are also members of the main group.??
* Members of main groups are not necessarily members of a subgroup.??
Adding a sub-group results in a new mail alias. For example, if we added
"ubitx" we would have "[email protected]" for the main group and
"[email protected]". Subscribers can then optionally subscribe to the
sub-group. It sounds like a perfect solution to me.
Now, where's a moderator when you need one? :)
-David, KM4NKU
--
Michigan VHF Corp.
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Re: Seperate group for uBITX ?
Sounds to me like a sub-group would be worth trying out? It sounds like it was built for this exact use case. A few key points from: /g/GroupManagersForum/wiki/Subgroups
* Members of subgroups are also members of the main group.?
* Members of main groups are not necessarily members of a subgroup.?
Adding a sub-group results in a new mail alias. For example, if we added "ubitx" we would have " [email protected]" for the main group and " [email protected]". Subscribers can then optionally subscribe to the sub-group. It sounds like a perfect solution to me. Now, where's a moderator when you need one? :) -David, KM4NKU
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Many folks are using the sketch by Allard, PE1NWL.?
He has done a great job on the code and documentation for this and it has a lot
of very useful features including dual VFO, RIT, SPOT (or fine tune for SSB), CW/USB/LSB
so I suggest you check it out. This code is completely backward compatible with Farhan's
original code so it can be loaded into the Raduino without any hardware changes. However,
to take advantage of the added features there are a few simple mods that are needed but are very well documented.
The code and all documentation ?is in GITHUB at :?
Cheers
Michael VE3WMB?
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Re: Reverse polarity diode circuit
An option Worried one day you will hook up power to your radio backwards and watch the magic smoke?? Stop worrying by adding this low loss reverse polarity protection board between your power line and QRP rig.
The RPP-SMT version was designed using larger surface mount parts.? Afraid of loosing the really small parts?? No worries! We will include 2 resistors, capacitors, and diodes in each kit!
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RPP-SMT Specifications
| Supply voltage input: |
Minimum 4V (Vgsth) |
Maximum 50V (Vdss) |
| Current Load:
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4.25A Continuous
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7A Peak |
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Re: Si570 Output (Sweeperino) - 100 MHs Sine?!
I am confused, do the physical connections to the lcd need to be changed from what Ashhar described, or the listing of the connections in the code , or both, (and if so, exactly how?).
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Re: Reverse polarity diode circuit
Color coding? ?Years ago I bought a 7A SLA battery at a swap. Late at night I hooked the clips from a small QRP rig, red to red, black to black, RIGHT? and PUFF!?
The seller of the battery had used a RED pricing sticker AND put it right next to the NEGATIVE pole of the battery. ?You know the rest of the story. ?A neat QRP rig became a box of parts to help someone else repair theirs. ?I gave it away. ?The Chinese designer (who is still in business) had put no reverse polarity protection in his circuit.
Dave K8WPE
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On Dec 12, 2017, at 2:07 PM, fr.beckenbauer@... wrote: what happened to the idea of using color coded cables and plugs, or just plugs that aren't reversible if you want to go the extra mile?
Adding a full bridge rectifier to everything can really bite you in the ass when you aren't used to being careful of polarity, and then fry something that isn't protected. So using a diode, so that the device just doesn't do anything when you plug it in the wrong way, is the safest option.
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Re: Seperate group for uBITX ?
I only got a mobile phone to get my emails for this group I don't need a second group so i hope we stay as we are chris
On 13 Dec 2017 09:58, "Craig Thibodeaux" < km4yec@...> wrote: As someone who has to stretch to learn anything 'new'....certified....I keep screaming not anything new in 'how' I get the new info I want.....
So on that note, please, no, new nothing. (now please give us new radios, more, more....)
I also have not looked into sub groups, as I ask myself why?
What I have pondered is this: hashtags.....
I have a group for emailing purposes for meetings for a local group.? It is new and it, I believe will serve me well in what I want it do.? What I discovered is that as admin I can set hashtags as mandatory, that is, every new topic created must be assigned at least one hashtag.? Another setting I choose was that only moderators could create hashtags.
That way for my limited purpose group, which will always be small, and have just a handful of messages.? Management controls the sorting. I will be able to sort and find what I want.? And hopefully so will everyone else.
I have only used the 'search' feature of sporadically with limited success.? I believe without digging deeper, hashtags are the what I would choose.
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Re: Seperate group for uBITX ?
As someone who has to stretch to learn anything 'new'....certified....I keep screaming not anything new in 'how' I get the new info I want.....
So on that note, please, no, new nothing. (now please give us new radios, more, more....)
I also have not looked into sub groups, as I ask myself why?
What I have pondered is this: hashtags.....
I have a groups.io group for emailing purposes for meetings for a local group. ?It is new and it, I believe will serve me well in what I want it do. ?What I discovered is that as admin I can set hashtags as mandatory, that is, every new topic created must be assigned at least one hashtag. ?Another setting I choose was that only moderators could create hashtags.
That way for my limited purpose group, which will always be small, and have just a handful of messages. ?Management controls the sorting. I will be able to sort and find what I want. ?And hopefully so will everyone else.
I have only used the 'search' feature of groups.io sporadically with limited success. ?I believe without digging deeper, hashtags are the what I would choose.
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Re: Seperate group for uBITX ?
Separate groups and lose the cross-pollination that happens between the BITX variants? I think I'm against it. Now, if this were web forum and I was the moderator, I?would support creating a different section just for the uBITX. But in web forums, people join the *whole* forum and then post in the topic that interests them the most. If a sub-group would do that, then maybe I'd support it. But I'd?really hate for people to have to join two entirely different groups for these closely related devices.
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Ryan Flowers - W7RLF
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Re: Si570 Output (Sweeperino) - 100 MHs Sine?!
Good job!
I'd guess the program was using that 56.32mhz frequency to (essentially, but perhaps not literally) calculate the exact frequency of the internal reference oscillator (using the contents of the factory programmed internal registers used for calibration) but not doing any kind of error checking on the ridiculous result it got. ?
My LVDS thing was apparently bogus.
I see now that your original post reported a 400mv 100mhz output.
Jerry
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On Tue, Dec 12, 2017 at 09:04 pm, AndyH wrote:
IT'S WORKING!
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Re: Si570 Output (Sweeperino) - 100 MHs Sine?!
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On Wed, Dec 13, 2017 at 10:34 AM, AndyH <ahecker@...> wrote: IT'S WORKING!
?? ?The only difference I can see between the LVDS 3.3V Si570 variants Mouser stocks is the programmed start-up frequency (well...and freq stability and price).? I disregarded the freq because I figured the code would set it.? The device I bought has a 100 MHz startup.? In line 197 in the set-up section of code, the argument lists the device's start-up frequency.? I left the default 56.32 MHz.? That didn't work.
?si570 = new Si570(SI570_I2C_ADDRESS, 56320000);
When I changed the argument to the start-up for my Si570 (100 MHz), the chip woke up and is making fully controllable square waves.? \o/? (<-- simulated emoticon to celebrate the joy of controlled oscillation)
? ?I'm doing this to learn and I can confirm that learning is happening!? Thanks for the help, gents.? And thanks for yet another cool project, Mr. Farhan!
? ? 73 to all
? ? ?Andy
On Tue, Dec 12, 2017 at 08:18 pm, AndyH wrote:
I loaded the Razzies mod of your code.? The body of the sketch is identical to sweeperino-master.? The changes were to comment out the checks for the Si5351, and to change the set-up for the lcd from (12,11,10,9.8,7) to (12,11,7,8,9,10).? I'm using the Radiono library for the Si570.
The Si570 came from Mouser.? It has an LVDS output, 3.3VDC.? BBC000121G? (According to SiLabs, it's 121DG).? The startup freq is 100 MHz, address is 0x55.? I don't know the calibration frequency.
I agree, sir, that it doesn't appear that the code's talking to the Si570.? I broke the circuit down this afternoon and rebuilt it.? I also started from a fresh version of Arduino 1.6.12.? Behavior is the same.
Should I have ordered a pre-programmed device?? Or is there a better choice from the available versions???
Andy
On Tue, Dec 12, 2017 at 05:49 pm, Ashhar Farhan wrote:
andy,
the part is not responding to the arduino..which sketch are you using?
- f
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Re: Si570 Output (Sweeperino) - 100 MHs Sine?!
IT'S WORKING!
?? ?The only difference I can see between the LVDS 3.3V Si570 variants Mouser stocks is the programmed start-up frequency (well...and freq stability and price).? I disregarded the freq because I figured the code would set it.? The device I bought has a 100 MHz startup.? In line 197 in the set-up section of code, the argument lists the device's start-up frequency.? I left the default 56.32 MHz.? That didn't work.
?si570 = new Si570(SI570_I2C_ADDRESS, 56320000);
When I changed the argument to the start-up for my Si570 (100 MHz), the chip woke up and is making fully controllable square waves.? \o/? (<-- simulated emoticon to celebrate the joy of controlled oscillation)
? ?I'm doing this to learn and I can confirm that learning is happening!? Thanks for the help, gents.? And thanks for yet another cool project, Mr. Farhan!
? ? 73 to all
? ? ?Andy
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Show quoted text
On Tue, Dec 12, 2017 at 08:18 pm, AndyH wrote:
I loaded the Razzies mod of your code.? The body of the sketch is identical to sweeperino-master.? The changes were to comment out the checks for the Si5351, and to change the set-up for the lcd from (12,11,10,9.8,7) to (12,11,7,8,9,10).? I'm using the Radiono library for the Si570.
The Si570 came from Mouser.? It has an LVDS output, 3.3VDC.? BBC000121G? (According to SiLabs, it's 121DG).? The startup freq is 100 MHz, address is 0x55.? I don't know the calibration frequency.
I agree, sir, that it doesn't appear that the code's talking to the Si570.? I broke the circuit down this afternoon and rebuilt it.? I also started from a fresh version of Arduino 1.6.12.? Behavior is the same.
Should I have ordered a pre-programmed device?? Or is there a better choice from the available versions???
Andy
On Tue, Dec 12, 2017 at 05:49 pm, Ashhar Farhan wrote:
andy,
the part is not responding to the arduino..which sketch are you using?
- f
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Re: Ubitx only on preorder now
Unfortunately not....I am waiting for reply (about my orders) more than 72 hours.
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Re: Si570 Output (Sweeperino) - 100 MHs Sine?!
All Si570's come pre-programmed for some power-up output frequency.
100mhz is a typical default, but whatever the power up frequency is, ?it is factory calibrated to be very accurate.
If you program the Si570 to a new frequency you can do so without knowing the original frequency,
but some ?programs will use knowledge of that start-up frequency and also read the power-up state of the Si570's registers
to glean the calibration information needed to?make the new output frequency more accurate.
If you can scan the Si570 and get a report back stating the i2c address, that sounds to me like the i2c interface is working.?
I'm not terribly familiar with the Sweeperino, so will defer to Farhan on this.
But looking at the schematic, am suspicious that it wants the CMOS output version of the Si570, not the LVDS version.
The description of the Sweeperino does not state what version of the Si570 is used.
Given that you have an LVDS version of the Si570, I'd ?put a 100 ohm resistor between the two
complementary LVDS output pins ?and expect about a 300mv pk-pk square wave on both of those pins.
(the datasheet says it will be 700mv differential).
That should then give an output you can use, though much smaller than a CMOS output.
What an LVDS output does with no differential load might be undefined.?
Jerry, KE7ER
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On Tue, Dec 12, 2017 at 08:18 pm, AndyH wrote:
The Si570 came from Mouser.? It has an LVDS output, 3.3VDC.? BBC000121G? (According to SiLabs, it's 121DG).? The startup freq is 100 MHz, address is 0x55.? I don't know the calibration frequency.
I agree, sir, that it doesn't appear that the code's talking to the Si570.? I broke the circuit down this afternoon and rebuilt it.? I also started from a fresh version of Arduino 1.6.12.? Behavior is the same.
Should I have ordered a pre-programmed device?? Or is there a better choice from the available versions???
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Re: Si570 Output (Sweeperino) - 100 MHs Sine?!
?
From page 2 of the supplied
Have you tried that, yet??
On Tuesday, December 12, 2017 11:18 PM, AndyH <ahecker@...> wrote:
I loaded the Razzies mod of your code.? The body of the sketch is identical to sweeperino-master.? The changes were to comment out the checks for the Si5351, and to change the set-up for the lcd from (12,11,10,9.8,7) to (12,11,7,8,9,10).? I'm using the Radiono library for the Si570.
The Si570 came from Mouser.? It has an LVDS output, 3.3VDC.? BBC000121G? (According to SiLabs, it's 121DG).? The startup freq is 100 MHz, address is 0x55.? I don't know the calibration frequency.
I agree, sir, that it doesn't appear that the code's talking to the Si570.? I broke the circuit down this afternoon and rebuilt it.? I also started from a fresh version of Arduino 1.6.12.? Behavior is the same.
Should I have ordered a pre-programmed device?? Or is there a better choice from the available versions???
Andy
On Tue, Dec 12, 2017 at 05:49 pm, Ashhar Farhan wrote:
andy,
the part is not responding to the arduino..which sketch are you using?
- f
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Vince N2AIE
David Wilcox K8WPE
Craig Thibodeaux