what does your NanoVNA circuit board look like?

Larry Rothman Всі повідомлення цього користувача #19 I just received my NanoVNA yesterday and it was shipped without the battery. I noticed there are unused pads directly below the coil, one of which connects to VCC batt. There is also a spot for a TF card slot. I would appreciate if other NanoVNA owners could post photos of their boards for a comparison to see if there are different versions being sold. Also, does anyone know if there is a touchscreen calibration routine available? Mine is way off. Thanks Larry IMG_20190622_141239_0.jpg
Dom Baines M1KTA Всі повідомлення цього користувача #20 Mine looks the same.What does the front look like?Does it have a black or a white front with a gekko on it.The rear will have the old original github address. 72 DomM1KTA переключити цитоване повідомлення Показати цитований текст On Saturday, 22 June 2019, 19:31:39 BST, Larry Rothman <ac293@...> wrote: I just received my NanoVNA yesterday and it was shipped without the battery. I noticed there are unused pads directly below the coil, one of which connects to VCC batt. There is also a spot for a TF card slot. I would appreciate if other NanoVNA owners could post photos of their boards for a comparison to see if there are different versions being sold. Also, does anyone know if there is a touchscreen calibration routine available? Mine is way off. Thanks Larry
Larry Rothman Всі повідомлення цього користувача #21 I got the white unit, as you described. Did yours come with a battery? I'd like to connect a battery to it but I'm wondering what might mounted on the pads just to the lower right of the battery pads, below the coil. Also, does anyone know what P1 is for? Is that what needs to be shorted to place the unit into DFU mode for flashing? Speaking of which, has anyone attempted to reflash the unit yet? Cheers, Larry
Anton Moehammad Всі повідомлення цього користувача #28 Hi All, I still waiting for my nanoVNA but I found this cal procedure maybe You can follow Computer & RF Technology btw have any one try to contact the real author of NanoVNA and tell him about this Geoup ? maybe he can join the discussion. Thamk YouAnton \| \| \| \| \| \| \| \| \| \| \| Computer & RF Technology TT \| \| \| Pada Minggu, 23 Juni 2019 03.34.26 WIB, Larry Rothman <ac293@...> menulis: I got the white unit, as you described. Did yours come with a battery? I'd like to connect a battery to it but I'm wondering what might mounted on the pads just to the lower right of the battery pads, below the coil. Also, does anyone know what P1 is for? Is that what needs to be shorted to place the unit into DFU mode for flashing? Speaking of which, has anyone attempted to reflash the unit yet? Cheers, Larry
Hugen Всі повідомлення цього користувача #37 Змінено I remade NanoVNA based on edy555 (https://twitter.com/edy555), but modified some circuits, added battery management circuits, and redesigned the PCB. I developed a PC control software can export Touchstone (snp) files which can be used for various radio design and simulation software.The improved frequency algorithm can use the odd harmonic extension of si5351 to support the measurement frequency up to 900MHz. I sell at cost price in the online store https://gen111.taobao.com/ . Because it's open source hardware, I also shared my circuit diagram,it was soon cloned. I found that the white version with a gecko on it was a very bad clone.
Dom Baines M1KTA Всі повідомлення цього користувача #38 I found that the white version with a gecko on it was a very bad clone. I would agree. As I have one and there is lots missing :-) 72 DomM1KTA переключити цитоване повідомлення Показати цитований текст On Monday, 24 June 2019, 14:37:06 GMT+1, hugen@... <hugen@...> wrote: gerrykav Jun 6 #66 Maybe this answers your question, Dan (taken from project website) あくまで個人が趣味の範疇で行うキット頒布です Translate link Reply Like More gerrykav Jun 6 #64 I am not for a second trying to be the IP police here, but in the absence of an explicit license, the standard 'all rights reserved' applies. / Gerry Reply Like More Daniel Marks Jun 4 #48 Do you know what license the original edy555 under which the NanoVNA is provided? Have you corresponded with the author to get permission to use the design? Dan toggle quoted messageShow quoted text Reply Like More hugen@... Jun 4 #47 I remade NanoVNA based on edy555 (https://twitter.com/edy555), but modified some circuits, added battery management circuits, and redesigned the PCB. I developed a PC control software can export Touchstone (snp) files which can be used for various radio design and simulation software.The improved frequency algorithm can use the odd harmonic extension of si5351 to support the measurement frequency up to 900MHz. I sell at cost price in the online store https://gen111.taobao.com/ . Because it's open source hardware, I also shared my circuit diagram,it was soon cloned. I found that the white version with a gecko on it was a very bad clone.
Dom Baines M1KTA Всі повідомлення цього користувача #39 Have you included or documented all the additional changes anywhere? Is the source code available for the additions? 72 Dom M1KTA
Dom Baines M1KTA Всі повідомлення цього користувача #40 No battery and lots of 'other bits' seem missing.
Larry Rothman Всі повідомлення цього користувача #41 Dom, Can you be more specific? What's missing from the Gecko version and how is it a "very bad clone"? What are the hardware and/or software differences? It would be great if someone could create comparison list/table for everyone on this group so we can see the differences between the various versions. If someone that owns a battery powered unit, could you please post a photo of the unit with the back cover removed so those of us with the non-battery version can see what's different as well. Thanks, Larry
Dom Baines M1KTA Всі повідомлення цього користувача #42 On Monday, 24 June 2019, 17:40:18 GMT+1, Dom Baines M1KTA via Groups.Io <dombaines@...> wrote: No battery and lots of 'other bits' seem missing. These are all from a white clone I RX from ebay (wishyou-happy) with the gecko on the front.Cost was $46.99 (probably c$55) The biggest issues so far seem to be that there are no ICSP headers, no SD card and no battery. Not quite sure how this was even tested. It says 50kz to 900MHz but with that front end no idea how that is even possible. 300MHz looks more likely. I'll post the usb readout from a Linux system later if it recognises the hardware etc it does appear to do the charge thing (blue and red led) but with no battery that is a bit moot. The ebay auction did say no battery. Original should be a 150mA LiLoN battery. I cannot get any PC software to connect to it. 72 DomM1KTA D9e4SykX4AAbjsF.jpg D9e4SD5WwAA0ydT.jpg D9e4RPcWwAAjewn.jpg D9fpIgcX4AA4OK2.jpg D9fpc74WwAEuqJF.jpg
Larry Rothman Всі повідомлення цього користувача #43 Dom, There are VERY strict guidelines as to what types of equipment can include Lithium batteries if being shipped by air. Many Asian vendors have been burned by having their shipments returned due to being refused air shipment due to the inclusion of Li batteries. So, they have started to ship their products without them. I for one am happy to get my items faster, even if they don't include the batteries. I can buy the Li batteries locally and it ensures I'm getting new cells, not old stock that may fail in 6 months. Regards, Larry
Dom Baines M1KTA Всі повідомлення цього користувача #44 Larry, I can understand the airline battery conflicts definitely as I fly with Radios from time to time. If it were just the battery that were missing maybe but that is not all that doesn't work and the QC is terrible, not kidding the solder flux had not been cleaned off what had been soldered. At a hardware level it looks like a STM32 and a TLV320 are present, so connect a USB and you should at least see the USB idVendor and idProduct codes on the USB bus? As the docs all seem to suggest there is a boot loader present. I'll confirm later. AFAIK an STlink V2, or similar, should tell you what had been loaded on the STM32 MCU. Assuming he ICSP headers existed. As the screen says 50Kz to 900MHz I assume the appropriate firmware was loaded. Not sure an SA602 can handle 900MHz anyway.Bit loath right now to tinker until I can work out is the unit going to work at all. 72 DomM1KTA переключити цитоване повідомлення Показати цитований текст On Monday, 24 June 2019, 17:47:32 GMT+1, Larry Rothman <ac293@...> wrote: Dom, There are VERY strict guidelines as to what types of equipment can include Lithium batteries if being shipped by air. Many Asian vendors have been burned by having their shipments returned due to being refused air shipment due to the inclusion of Li batteries. So, they have started to ship their products without them. I for one am happy to get my items faster, even if they don't include the batteries. I can buy the Li batteries locally and it ensures I'm getting new cells, not old stock that may fail in 6 months. Regards, Larry
Larry Rothman Всі повідомлення цього користувача #45 Змінено I've already started hacking my unit so I can push F/W, add a battery, etc. I've attached several photos. If you're into Amateur Radio, you can probably obtain some old scrap Motorola HT1250 portables. They can supply shields for the front-end as well as a button for P2 (to put the unit into DFU mode) To place the unit in DFU (Programming mode) you only need to short P2 when applying power - so I installed a push button - push button/apply power/release button - works great. The radio shields (there are two on every HT1250 that will fit) need to be slightly trimmed where there is a surface trace to prevent shorts and impedance issues. Finally, for your question regarding interfacing to the PC, I've successfully installed the serial driver and the DFU driver and have pushed new firmware to the device. Cheers, Larry ht1250 scrap radio.jpg Shields _ buttons.jpg shields installed.jpg stm serial installed.jpg stm in dfu.jpg
Dom Baines M1KTA Всі повідомлення цього користувача #46 Larry, Sadly no HT's here but I am guessing some brass shim etc or tin plate screens would help. Still not convinced about the top end freq wise though with SA602. The unit wasn't that expensive so might just bite the bullet and clean the board and add the headers etc. Linux user but that the usb bootloader is present for you at least that would seem helpful for USB programming. If programming via ICSP I am sure the PCB had where that push button should go when programming. The normal process would be disconnect the USB and power only through the ICSP headers though? The recent PC side software doesn't seem to have a Linux version so I guess the python scripts will be the answer but might need to figure out the connection port first. Driver? 72 Dom M1KTA
Larry Rothman Всі повідомлення цього користувача #47 A quick comment on the flux residue - it doesn't have to be cleaned if it's the water-soluble type. It looks bad but it's harmless. Brass shim should work for the shields, but make sure it's not too thin or you'll see something akin to microphonics if the flat surface is able to vibrate. When I worked at Motorola, we had to mould stiff ribs along the surface of the synth VCO covers to prevent issues caused by even the smallest vibrations. If you have a local junk/surplus store see if they have any cellphones/pagers/radios that you can pull some shields off of. Just heat the board up with a heat gun and the shields fall off. As for the battery, I think the ones that came with one, have it sandwiched between the back cover and the PCB. Maybe some can confirm?
bartj Всі повідомлення цього користувача #48 See attached screen shot. I purchased my white gecko from 2012moon816. It included the battery. переключити цитоване повідомлення Показати цитований текст On Mon, Jun 24, 2019 at 10:30 AM Larry Rothman <ac293@...> wrote: A quick comment on the flux residue - it doesn't have to be cleaned if it's the water-soluble type. It looks bad but it's harmless. Brass shim should work for the shields, but make sure it's not too thin or you'll see something akin to microphonics if the flat surface is able to vibrate. When I worked at Motorola, we had to mould stiff ribs along the surface of the synth VCO covers to prevent issues caused by even the smallest vibrations. If you have a local junk/surplus store see if they have any cellphones/pagers/radios that you can pull some shields off of. Just heat the board up with a heat gun and the shields fall off. As for the battery, I think the ones that came with one, have it sandwiched between the back cover and the PCB. Maybe some can confirm? screenshot.png
Frank S Всі повідомлення цього користувача #49 That is the one I have, and it seem to work OK переключити цитоване повідомлення Показати цитований текст On 6/24/2019 12:13 PM, Dom Baines M1KTA via Groups.Io wrote: I found that the white version with a gecko on it was a very bad clone. I would agree. As I have one and there is lots missing :-) 72 DomM1KTA On Monday, 24 June 2019, 14:37:06 GMT+1, hugen@... <hugen@...> wrote: gerrykav Jun 6?? #66 Maybe this answers your question, Dan (taken from project website) ?????????????????????????????????????????????????????????????????? Translate link Reply Like More gerrykav Jun 6?? #64 I am not for a second trying to be the IP police here, but in the absence of an explicit license, the standard 'all rights reserved' applies. / Gerry Reply Like More Daniel Marks Jun 4?? #48 Do you know what license the original edy555 under which the NanoVNA is provided??? Have you corresponded with the author to get permission to use the design? Dan toggle quoted messageShow quoted text Reply Like More hugen@... Jun 4?? #47 I remade NanoVNA based on edy555 (https://twitter.com/edy555), but modified some circuits, added battery management circuits, and redesigned the PCB. I developed a PC control software can export Touchstone (snp) files which can be used for various radio design and simulation software.The improved frequency algorithm can use the odd harmonic extension of si5351 to support the measurement frequency up to 900MHz. I sell at cost price in the online store https://gen111.taobao.com/ . Because it's open source hardware, I also shared my circuit diagram,it was soon cloned. I found that the white version with a gecko on it was a very bad clone.
Frank S Всі повідомлення цього користувача #50 I have worked in this industry for long enough to know it does make a difference. The flux attracts moisture and can change parameters. I always use IPA (not the beer) to clean the board off. Be careful on the display some are not sealed, and alcohol can screw it up переключити цитоване повідомлення Показати цитований текст On 6/24/2019 1:30 PM, Larry Rothman wrote: A quick comment on the flux residue - it doesn't have to be cleaned if it's the water-soluble type. It looks bad but it's harmless. Brass shim should work for the shields, but make sure it's not too thin or you'll see something akin to microphonics if the flat surface is able to vibrate. When I worked at Motorola, we had to mould stiff ribs along the surface of the synth VCO covers to prevent issues caused by even the smallest vibrations. If you have a local junk/surplus store see if they have any cellphones/pagers/radios that you can pull some shields off of. Just heat the board up with a heat gun and the shields fall off. As for the battery, I think the ones that came with one, have it sandwiched between the back cover and the PCB. Maybe some can confirm?
Larry Rothman Всі повідомлення цього користувача #51 Thanks Bart. I figured the battery was wedged in there - probably why the SD card slot wasn't installed.
Glenn Little Всі повідомлення цього користувача #52 If the flux is water soluble it definitely must be cleaned off or it will corrode the board. I worked for a company that partially built their boards to be finished later and they used water soluble flux cored solder. All of the boards were scrap after 3 weeks. If the flux is no clean then the flux does not have to be removed. It is better if it is removed, but, not absolutely required. Glenn переключити цитоване повідомлення Показати цитований текст On 6/24/2019 1:30 PM, Larry Rothman wrote: A quick comment on the flux residue - it doesn't have to be cleaned if it's the water-soluble type. It looks bad but it's harmless. Brass shim should work for the shields, but make sure it's not too thin or you'll see something akin to microphonics if the flat surface is able to vibrate. When I worked at Motorola, we had to mould stiff ribs along the surface of the synth VCO covers to prevent issues caused by even the smallest vibrations. If you have a local junk/surplus store see if they have any cellphones/pagers/radios that you can pull some shields off of. Just heat the board up with a heat gun and the shields fall off. As for the battery, I think the ones that came with one, have it sandwiched between the back cover and the PCB. Maybe some can confirm? -- ----------------------------------------------------------------------- Glenn Little ARRL Technical Specialist QCWA LM 28417 Amateur Callsign: WB4UIV wb4uiv@... AMSAT LM 2178 QTH: Goose Creek, SC USA (EM92xx) USSVI LM NRA LM SBE ARRL TAPR "It is not the class of license that the Amateur holds but the class of the Amateur that holds the license"

Попередня тема Наступна тема