Keyboard Shortcuts
ctrl + shift + ? :
Show all keyboard shortcuts
ctrl + g :
Navigate to a group
ctrl + shift + f :
Find
ctrl + / :
Quick actions
esc to dismiss
Likes
- BITX20
- Messages
Search
|
TFT/VFO Code and PCB Update
Jack Purdum
All:
Attached is an updated assembly manual for the TFT/VFO PCB I talked about at FDIM. Read the manual completely before building the board. I am also attaching the code for the TFT display and the VFO. There are two code files and there are directions for setting up those files for the Arduino IDE in the manual. Hopefully, the code is fairly easy to read. Some things I'm happy about; others I'm not. First, even without calibrating the AD9850, the frequency error is only 0.0000087% at 7MHz. After calibration (as explained in the manual), I cannot measure the error...if there is one. It looks dead-nuts on to me. Second, the keyer is simple, but works. I haven't told how to add the CW message switches yet, but most of you know how to do that. (I will be adding it to the manual, but wanted to get this out there ASAP.) Also, you can add paddles from your keyer and use the rig as a code practice oscillator right now. Dennis is finishing up the CW (and other) mods so I will have to change the code what that gets finished. And that's what I'm not happy about: The AGC, S meter, speech compressor, and CW mode is not implemented yet. You'll have that as soon as we get it done. Note, the code is NOT a replacement for the work done by Allard. My PCB uses the Arduino MEGA 2560 Pro Mini and the Ad9850 (Type II) board which is vastly different that the Raduino board shipped with the standard BITX40. I have more PCB's now and can begin shipping those. If you wanted multiple boards, but only got one before, please reorder. On foreign orders, I tried sending two orders as First Class mail in an envelop to get the costs down. One came back; hopefully the other one made it through. But, I'm not going to take the chance. All boards will go Parcel Post from now on. If you are in a foreign country, 4 boards go for the price of 1, so combine orders if you have a friend who wants one. Sorry guys, but foreign orders are $15, period. The additional postage averages about $11 and I have to fill out the export forms, which is a pain in the butt. Trust me, I'm not getting rich on you guys. US orders are still $7.50. Please note: 1. My paypal account is: ? econjack@... ? ? ? ? ? ? ? ?(please don't use any other account) 2. When you pay, there is a place where you can add a note: please write your shipping address in that note. If you find bugs in the software, let me know as soon as possible and I'll try to correct them as fast as I can. Jack, W8TEE TFTVFOManualRev02.doc
TFTVFOManualRev02.doc
B40SoftwareRel0100.ino
B40SoftwareRel0100.ino
MorseCode.h
MorseCode.h
|
|
Re: Standoffs for mounting the board
Robert Ogburn
On the use of cutting fluids-? different metals require different cutting fluids.? I use tapmagic brand (USA),? the no#1 tapmatic(yellow) is for ALL ferrous metals. The no#2 tapmatic (red) is for alluminium. It works great for brass and copper as well.....
Work slowly, reversing the direction of turning to release the chips and DON'T TILT the tap... Your local machine shop may spare you a bit in your own container. |
|
Re: Yet another Raduino PCB
Sending Photos did not work?
Do it this way. 
RaduinoXBOT1.jpg
RaduinoXFRONT1.jpg
RaduinoXMount1.jpg
RaduinoXMount2.jpg
RaduinoXREAR1.jpg
RaduinoXTOP1.jpg
RaduinoXTOP2.jpg
|
|
Yet another Raduino PCB
This is yet another Raduino PCB designed to add some features.
1) I wanted to be able to plug Nano in and wanted the USB connect next to the side of the cabinet so I can program without taking the lid off.? I will make a small hole. 2) Added more filtering and conditioning on the power input. 3) Added a dedicated connector for Rotary Encoder. 4) Added an I2C connector. 5) I wanted proper Level Shifting to the Si 3V part.? Added FETs and pullups for that. 6) Added D0 and D1 pins on PCB. 7) Kept power and VFO connector on 5P header so no changes to my present wiring was necessary. 8) Put contrast Pot where you can get to it. I think I added photos to this post correctly? Take a look if you are interested. Mike, WA6ISP |
|
Re: Amp readings on Bitx40
Hmm. ?Where did I (or somebody) say 35-40ma?
toggle quoted message
Show quoted text
It's possible I did. ?(That's about right for my KD1JV MTR transceiver.) But if so I would have been wrong. Jerry On Sat, Jun 10, 2017 at 09:18 am, KM4TRT wrote: You have mentioned something quite lower ( 35-40 ma). ? |
|
Re: add yourself to the new BITX operators map
philip yates
Have added mine. Phil - G7BZD On Sat, Jun 10, 2017 at 5:21 PM, Art Olson <olson339@...> wrote:
|
|
Amp readings on Bitx40
Jerry and all,
I've read all the answers that you sent me and others about the power usage for setup. My question is: Farans instruction (part 8 second bullet) say::
|
|
Re: UBitx LSB to USB change
In addition to a function switch, probably want to also remove C91 and C92 as mentioned in Allard's operating instructions.
toggle quoted message
Show quoted text
On Sat, Jun 10, 2017 at 08:33 am, Jerry Gaffke wrote: Allard's sketch flips between LSB and USB by moving the VFO from low side (5mhz) to high side (19mhz) of the 12mhz intermediate frequency. ?That seems to work fine and is the easiest to implement (just update the code on your Nano and add a Function button). ?There are at least three ways to flip between LSB and USB operation.? |
|
Re: UBitx LSB to USB change
There are at least three ways to flip between LSB and USB operation.
toggle quoted message
Show quoted text
Could drive the BFO from CLK0 of the Si5351 as mentioned here by Allard (but not yet implemented in his sketch): ?/g/BITX20/message/27021 This gives several advantages: Calibration can be more accurate, BFO can be easily placed properly with respect to the IF filter passband, and provides a way to implement various diagnostic aids. Could add capacitance at C103 to move the current analog BFO ?to the other sideband. Allard's sketch flips between LSB and USB by moving the VFO from low side (5mhz) to high side (19mhz) of the 12mhz intermediate frequency. ?That seems to work fine and is the easiest to implement (just update the code on your Nano and add a Function button). ?In this case the BFO frequency does not move, the sideband inversion occurs because we are now subtracting the RF signal from the VFO, not adding the RF signal to the VFO, when creating the IF signal. Jerry, KE7ER On Sat, Jun 10, 2017 at 07:44 am, JuanCarlos Berberena Gonzalez wrote:
? |
|
Re: cw speed
Thanks Raj. You reminded me that I also used to do the same. I also used to wire a small lamp with a 4.5V battery (flat battery pack with 3 cells. who remembers them) and used to read the morse from the lamp. Regards Lawrence On Thu, Jun 8, 2017 at 4:55 AM, Raj vu2zap <rajendrakumargg@...> wrote: Good advice from everyone! |
|
Re: add yourself to the new BITX operators map
toggle quoted message
Show quoted text
Seeing the topics for regional operator lists got me thinking.? If words are good, pictures are better.? I set up a google map that you can add yourself too to help visualize where everyone is located.? I was going to add people that responded to the other topics but out of respect for privacy (and my laziness) this should be entirely opt in only.? The map is only accessible with the link below.? The interface is reasonably intuitive but I will do my best to explain how to add yourself. |
|
UBitx LSB to USB change
Hi Colleagues, the best for all.
Farham a question for you.
What is the best option to change the side band from LSB to USB and vice versa if I want to use my rig in PSK or other mode I need.
I understand it can do for itself do when you change the band, but I want to do for myself if I need it.
I am working with the Raduino using the 3 output in Rx with the ANGARA and the performance is ok
I have changed the side band changing one of each oscillator and no problem with it, but I consider the VFO configuration is not the best one.
Qrv's 73's Jc |
|
Re: add yourself to the new BITX operators map
Jim,
toggle quoted message
Show quoted text
Switch to topic view and make things easier on yourself /g/BITX20/topics the map is at Sat, Jun 10, 2017 at 07:18 am, Jim Schliestett wrote:
? |
|
Re: add yourself to the new BITX operators map
Jim Schliestett
¿ªÔÆÌåÓýWould someone please provide the link to the map again. Thanks ? From: [email protected] [mailto:[email protected]] On Behalf Of Doug W ? A few housekeeping items: |
|
Re: add yourself to the new BITX operators map
A few housekeeping items:
I did some more research and you do need a google account to add yourself or edit.? It appears google just assumes the entire world has an account so share with everyone to them means everyone with an account.? Again, if you do not have an account or can not figure the page out just email me or reply and I will add you. I have deleted any added layers and added those operators to the main layer.? Please only add yourself to the main layer.? If you don't know what this means I will help you. A few operators added themselves only by address.? Where I could I looked up your call sign and added that.? Please edit if this was not your intention. One user added only their call sign as a layer with no location.? I moved you to the main layer and located you at the university in Southern India as that was the only thing that came up on google.? Please edit if this was not your intention. Something interesting you may not have noticed.? There is a ruler icon under the search box.? You can use that to measure the straight line distance from icon to icon. If you want to play with the data, there is an option to export to a KML/KMZ file. After reading the other comments regarding differentiating stations, I think we should stick to only things that will help us as operators.? I am all for adding as much of a description as you would like to tell us about your station and yourself in the description box but I am not sure that there is any standard icon designations that will help us.? I am totally open to ideas on this if anyone has a suggestion for a color scheme or different icons that at a quick glance will help you as a BITX operator reach other BITX operators.? I don't claim to be the master of this thing.? I'm just the guy that clicked the map page first. |
JuanCarlos Berberena Gonzalez
to navigate to use esc to dismiss