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Re: Protoneer Nano-Arm
#ubitx
R. Kuehn
Yes it does, see the pinout here for example:? I've built a nano into a sweeperino/sna jr with a tft display (ST7735 variant) and it works great. However it requires a DC, and RST line in addition to the MOSI line, it took some pin swapping to get the Adafruit library to accept the physical pin as some of them must be incompatible with the library. Ralph N9WTX? On Wed, Apr 25, 2018 at 1:55 PM, Kees T <windy10605@...> wrote: Jerry, |
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Re: Protoneer Nano-Arm
#ubitx
Jerry,
Back on topic. Do you know if the Nano will support a SPI interface ? Web info seems to be somewhat ambiguous. That seems to be the requirement of various small TFT displays.....and like you said that would free up a number of Nano pins for other uses.? 73 Kees K5BCQ |
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minimum supply voltage
Matthew Stevens
Apologies if this has been answered before, but I can't find it anywhere. I know the max recommended supply voltage is 15v. But, what is the minimum recommended? I have a 9.9v lithium pack I was thinking about re-purposing for a /p power supply.
73 -- - Matthew nj4y |
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Re: Poor Man's Panadapter?
Hi Bruce, have you tried using the standard 16 by 2 display usd with the uBITx in it's custom character mode? from what I recall you can load a number of bytes into the display to set the bits for each character individually, if both lines were used it can be used as an 80 by 14 dot display.?
-Justin N2TOH? |
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Re: Protoneer Nano-Arm
#ubitx
Jack Purdum
Morse code Trainer?? Do you have a link?
Jack, W8TEE
On Wednesday, April 25, 2018, 11:08:10 AM EDT, Kees T <windy10605@...> wrote:
Thanks for the input, Farahan. We use the little 1" OLEDs on the Morse code Trainer with excellent results and they are extraordinarily legible using 4 lines. 73 Kees K5BCQ |
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ubitx-VE1BWV/VU2SPF TIPS
Bo Barry
I've added some pics in the Pictures section of my project in hopes of helping.
1. I used one of the white protoboards and jumpers so I could easily switch from the original display to the nice TFT display 2. To switch I remove the raduino board, add 6 jumpers from the mega 2560 and 3 from the adafruit si5351 board to the proto board.? Note the scotch tape holding the jumpers in position.?? 3. A collection of the male-male and male-female jumpers is a must 4. The wires are full length until my plastic cabinet gets here 5. The 3d printed panels found on Amazon are handy for mounting all the external parts. Finding a few goofs was easy this way! I failed to sign up for the hints/tips here so I'm behind on the essential mods I need to do. I have a poppling sound in receive, along with some hum. A new supply and a buck circuit to get the mega2560 voltage down a bit from 13 volts come next. Hats off to Joe & SP for their efforts and their persona help. Bo W4GHV since '54 |
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Re: W8TEE TFT/VFO DDS adapter
¿ªÔÆÌåÓýIf you¡¯re talking about the DDS Type I to Type II adapters, yes I have a few (120).? I still need to trim one edge off them so they will fit in the W8TEE-K2ZIA Antenna analyzer or VFO.? Cost is $1.00 each plus postage.? Have in the past shipped three boards to Australia for $1.36 postage.? US postage $0.70 for up to four boards. Mike K5ESS ? From: [email protected] [mailto:[email protected]] On Behalf Of Ross Smith ? Any stray adapters left? Discovered a couple of spare boards in need of the dds variety that seems to have become unobtainium. |
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Re: curious if anyone has seen a raduino used for a general coverage receiver?
Rod Davis
¿ªÔÆÌåÓýKD8CEC firmware 1.072 and later has general coverage/ham bands option. See the manual Rod KM6SN
On 04/25/2018 08:44 AM, James Lynes
wrote:
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Re: D104 microphone
#ubitx
Using the ubitx with a linear amplifier really needs to see the ubits
operating at no more than 5 watts output because of 3rd Order IMD products. Operation at 1 watt would be even better. ALC really isn't needed in most operations, especially if an oscilloscope is available. Put your rig and amp in CW and tune for best output and monitor the levels on the scope. Mark the top and bottom of the level on the screen. Change to SSB and adjust your mic gain and rig output so that the output level from the amp never goes over the levels you marked on the screen. You can find used oscilloscopes from 10Mhz to 100Mhz from $35 to $50 on ebay. Any of them will work fine for monitoring your output in this manner. tim ab0wr On Wed, 25 Apr 2018 11:33:18 -0500 "MAX" <max@...> wrote: I tried my D104 with my ubitx and got 50 milliwatts output while |
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Re: DSP cheap for qrp
Ebay has a number of kits with the blue pill and an ST2-Link for
programming. Do you know if that will work with the download software you mention? tim ab0wr On Wed, 25 Apr 2018 09:14:37 -0700 "Giuseppe Callipo via Groups.Io" <ik8yfw@...> wrote: Thanks, Ian, as soon as possible I'll designs a better schematics and |
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Re: D104 microphone
#ubitx
MAX
¿ªÔÆÌåÓýI tried my D104 with my ubitx and got 50 milliwatts output while whistling into the mic.? The mic input impedance of the ubitx is much too low to work with the D104.? You and I both will have to build a mic preamp.? While I am at it I will add a gain control and maybe amplitude compression as well.? And then there is the issue of operating a linear amplifier with a ubitx.? When you get into power A L C is a good idea.? The ARRL handbook will show how to make A L C outputs for amplifiers and when using a ubitx the only place for the control signal to go is a mic preamplifier.? Note: the term A L C was used by Collins radio and most Collins owners would tell you that it stands for automatic load control.? I think owners of other brands would say automatic level control. ? Regards. ? Max K 4 O D S. ? I've Never Lost the Wonder. ? Antique Electronics Site: ? ? From: [email protected] [mailto:[email protected]] On Behalf Of Paul N2QXB ? Has anybody used a d104 mic with the ubixt? I |
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Re: Protoneer Nano-Arm
#ubitx
Kees,
toggle quoted message
Show quoted text
I agree.? For most of us, it's best to continue using the existing uBitx Raduino connector. So create a new Raduino with additional capabilities, as some have already done. By going to an I2C display, even the Nano has enough pins. Though as I recall Farhan once indicated he was considering a new version of the uBitx with the si5351 onboard, and I like to encourage that.? Going forward, doing away with the extra Raduino board would be a big plus in my book. Even so called Blue Pills can vary in significant ways. In this old post, I suggest sticking with a Blue Pill having silk that reads "PC13". ? ??/g/BITX20/message/40890 where PC13 is the pin number of the on board LED. And here, I mention that docs on the web for getting it going under the Arduino IDE are? more than a little confusing.? I could give my recipe if anyone is interested: ? ??/g/BITX20/message/43725 Might be easier to just shell out a few extra bucks for an honest Arduino Mkr Zero ? ??/g/BITX20/message/43764 as that is fully supported by the Arduino IDE. Note that the Mkr Zero is an ARM Cortex M0, vs the M3 on the Blue pill. Jerry, KE7ER On Wed, Apr 25, 2018 at 08:30 am, Kees T wrote:
The existing horse (today's mBIT-X) you left the gate on has lots of inertia due to the numbers out there. If we need more I/O, features, I would be inclined to make it where it's readily upgradeable for existing users. In my thinking that would mean leave the main board "essentially" the same (except for fixes) and focus on a pluggable Raduino-II which uses an inexpensive STM32F103BT6 at <$3 (the 8T6 has 64KB, the BT6 has 128KB flash....easy to mix them up) and add optional interfaces. That way the upgrade expense is held to a minimum.....yes the Si5351 stays on the Raduino-II and that makes the Raduino-II very portable to other products.? |
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Re: DSP cheap for qrp
Giuseppe I recommend your pretty project.? Even if it is stm32f103, I think it will work well if only FIR or IIR are performed without any operation. Perhaps the clarity of the sound quality will decrease. (Even if bypassed),?But I think I can use it in CW. Maybe your code might work nicer.?Please continue this wonderful project.?People may have a DSP filter of $ 2.
I hope that this beautiful project will be successful and used by many people.
My weekend project decided to do this. I will test the FIR performance on the STM32F103 over the weekend. Ian KD8CEC 2018-04-25 21:51 GMT+09:00 Giuseppe Callipo via Groups.Io <ik8yfw@...>: Thanks, Ian, you are right, the cortex m3 is a small processor unit, and no DSP extension like the f4, the main reason was the price of midules, I got one module for less than 2 dollars, and the challenge start. The cmsis library help a bit also if you can see the processor load for massive processing. But the simple fir run not bad. After fir I started to do some experience on Noise Reduction, I worked in time domain using simple smoothing algorithms. The processor has not enough power to make Spectrum subtraction methods but I plan to make other tests maybe using a cortex m4 processor, it is not a full DSP but I'm curious to see how it works. I found some modules at cost of 7 dollars with stm32f407. Feel free to use share and cobtribcon on project, I have a bitx40 and plan to add as external module or internal unit using existing onboard lm386. I calculate the filters with online calculator (I put the address on GitHub), I have not Matlab ( use more years ago at the University ) a simulation or calculus of filters could be usefull, for the ssb I build small fir with few taps 9 or 11 to have no audio distorted, for the CW I worked with over 60 taps, I compared more calculator online and this was the best results .? Thanks for help.? |
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Re: No PTT
Geoff Theasby
Hi Jerry and Jim, Yes, I have connected the centre pin to the Arduino earth (At a mounting hole) It made no difference. I have already found the Mechatronics item, thank you. I also previously checked the voltage on the two control pins. Both alternate between 0 & 5 volts as the knob is turned.On 25 April 2018 at 16:27, Jerry Gaffke via Groups.Io <jgaffke@...> wrote: The encoder is just a couple switches that short one and/or the other signal pin to the ground pin |
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Re: Protoneer Nano-Arm
#ubitx
Here is an SPI interface TFT for $8? ? ebay??0665211861088
73 Kees K5BCQ |
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Re: curious if anyone has seen a raduino used for a general coverage receiver?
James Lynes
I'm using my original Bitx40 Raduino(replaced in my Bitx40 by Mike's RaduinoX) with a modified version of Allard's 1.26 sketch as a 40m VFO for my 4SQRP ZZRX-40 DC receiver(QST June 2016). It works great. Just made a few minor code changes to tune 7.000 - 7.300. I think the ZZRX-40 BPF would pass 6.500 -7.500 if I wanted to tune wider. |
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Re: Protoneer Nano-Arm
#ubitx
Jerry,
The existing horse (today's mBIT-X) you left the gate on has lots of inertia due to the numbers out there. If we need more I/O, features, I would be inclined to make it where it's readily upgradeable for existing users. In my thinking that would mean leave the main board "essentially" the same (except for fixes) and focus on a pluggable Raduino-II which uses an inexpensive STM32F103BT6 at <$3 (the 8T6 has 64KB, the BT6 has 128KB flash....easy to mix them up) and add optional interfaces. That way the upgrade expense is held to a minimum.....yes the Si5351 stays on the Raduino-II and that makes the Raduino-II very portable to other products.? Many of the color LCDs out there are around $10 and have SPI, IIC, etc interfaces so you don't have to go with a parallel interface. By the way, there are some small differences between the STM32F1038T6 board they call a "Blue Pill" and the "Black Pill" but they are flooding the market as China blows out the manufacturing pipeline. 73 Kees K5BCQ |
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