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uProg - small, fast, portable AVR programmer with SD

manekinen 159940 364

TL;DR

  • uProg is a small, portable AVR programmer with SD/MMC storage for flashing, reading, and verifying AVR flash, EEPROM, fusebits, and lockbits.
  • It uses FAT16/FAT32 cards, a 6-pin ISP connector, a 4-button menu, automatic SCK selection up to 4 MHz, and a built-in bootloader for self-update.
  • The PCB measures 44 x 39 x 5.5 mm and writes at 12.5 kB/s while reading at 14.5 kB/s.
  • It was fully tested with tiny13, tiny45, tiny2313, mega8, mega88, mega16, mega32, mega328, and mega644, but HEX files are guaranteed only up to 64 kB.
  • Battery operation is limited: startup can draw up to 100 mA, the target is not powered through VCC, and removing the card during use can corrupt files.
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  • #301 11028695
    george2002

    Level 21  
    Posts: 526
    Rate: 158
    I have a question about the programmer, namely I submitted it - PCB version 1.2, vProgram ver.1.3, database chip.db ver.1.03, I only changed the 7 bit in the config.ini file regarding the display organization because there were shifts, but I have a problem - after turning on the power the LED blinks twice, then the startup animation, then the main menu screen, but no reaction to the buttons :( neither turn on or off neither the menu up nor down, maybe someone had a similar problem or knows how to solve it?

    Regards
    George2002
    Company Account:
    GS electronic Grzegorz Stoliński
    2 Pułku Lotniczego 18, Kraków, 31-857 | Company Website: www.gselectronic.pl
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  • #302 11030337
    piotrva
    VIP Meritorious for electroda.pl  
    Posts: 6409
    Help: 625
    Rate: 734
    Check the fusebits settings, then the assembly of the buttons, if they connect well.
  • #303 11030578
    george2002

    Level 21  
    Posts: 526
    Rate: 158
    piotrva wrote:
    Check the fusebits settings, then the assembly of the buttons, if they connect well.


    Hello, thank you for the info - it turned out that I had a shorted UP button and everything was up after the animation was displayed, after opening everything started to kick :)

    Regards
    George2002
    Company Account:
    GS electronic Grzegorz Stoliński
    2 Pułku Lotniczego 18, Kraków, 31-857 | Company Website: www.gselectronic.pl
  • #304 11514610
    hollp1
    Level 2  
    Posts: 4
    how do I program a hex file for ATMEGA328P. I have a program that used to program usbasp ATMEGA328P.
    please help me, I do not know how to program the atmega.
  • #305 11514822
    piotrva
    VIP Meritorious for electroda.pl  
    Posts: 6409
    Help: 625
    Rate: 734
    Simply connect ISP programmer to ISP connector, short rst jumper and flash atmega. It's simple normal flashing procedure.
  • #306 11514866
    hollp1
    Level 2  
    Posts: 4
    piotrva

    which program to use for flashing with the usbasp.
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  • #307 11514989
    mi14chal
    Level 28  
    Posts: 1021
    Help: 112
    Rate: 23
    Avrdude.
  • #309 11550839
    hollp1
    Level 2  
    Posts: 4
    pcb to lcd. alternative
    Attachments:
    • pcb 1.3.rar (94.93 KB) You must be logged in to download this attachment.
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  • #310 11770515
    Karol966
    Level 31  
    Posts: 2035
    Help: 83
    Rate: 645
    Quite by accident, I got into my hands again this programmer and this time I found a pixie - it was a tiny snot between the miso / mosi prock lines. It's just such a small ball, but it's already ok.
    That is, almost ok, because the purchased display with the plate has a poor contrast. I soldered an additional 470nF capacitor to these two at 100nF, but it did not help.
    I believe that these fakes are not worth even PLN 10. It is a pity for the money because there is no way to attach or connect them stably. If someone wants, I have such a display from the author to resell for a few zlotys because I am not going to use it.
    The display is different:
    uProg - small, fast, portable AVR programmer with SD

    Regards
    Charles
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  • #311 11780267
    manekinen
    Level 29  
    Posts: 1629
    Help: 76
    Rate: 2360
    Karol966 wrote:
    the purchased display with the plate has a poor contrast. I soldered an additional 470nF capacitor to these two at 100nF, but it did not help.

    Is it about the displays that I sent with the tiles? These are Chinese substitutes, but the contrast is good, tested by me. Increasing the capacitor will do nothing. You need to set the contrast in the configuration file, you can knock the whole lcd black. Previous versions of the software had a bug, the display power pin was set to the input mode so that the voltage flowed only through the internal pullup, I wrote about it during the update. Please check it too.
  • #312 12334132
    Slawek1710
    Level 11  
    Posts: 21
    Gentlemen, I assembled uProga on a 1.0 board converted to 1.1 I uploaded the firmware 1.3 the programmer starts and I can navigate the menu and everything is ok until I try to rip or upload something, then every time on the display I have:

    SCK: 8kHz
    chip: no answer

    What could be the reason.
  • #313 12334149
    manekinen
    Level 29  
    Posts: 1629
    Help: 76
    Rate: 2360
    No communication with the target system. Tile assembled correctly? Provide more information, e.g. is there any load on the ISP lines, what voltages etc.
  • #314 12334352
    Slawek1710
    Level 11  
    Posts: 21
    I looked at everything from the beginning including checking the correctness of the solders and everything is ok, but I do not know how it happened that I soldered:
    R1-330
    R2-1k
    R3-330
    R4-330
    and according to the diagram it is:
    R1-330
    R2-1k
    R3-22
    R4-22
    could that be a problem?
  • #315 12334386
    manekinen
    Level 29  
    Posts: 1629
    Help: 76
    Rate: 2360
    It should be corrected as much as possible, these are the MOSI and SCK lines and such large current limiting resistors cause that the signal edges are very distorted.
  • #316 13192719
    Dariusz Goliński
    Level 22  
    Posts: 782
    Help: 27
    Rate: 149
    Hello
    I have just put together my programmer only on the THT prock and a large SD card. Of course, on the cultured spider and backlit display. The menu comes on and the menu works, but I haven't programmed yet.
    But I have another problem. I pre-programmed the fusebits but not completely. I tried mkavr calculator but can't set bits in it. I pre-programmed a programmer in bascom.
    Could you please give the exact coffee grounds setting for the bascom programer or suggest how to program them correctly?
    I tried to write something on the author's website but the page crashed me.
    Thanks for the help.
  • #317 13203729
    manekinen
    Level 29  
    Posts: 1629
    Help: 76
    Rate: 2360
    I last set the fusebits in bascom maybe 5 years ago, so I can't help. On top of that, I currently don't have access to bascom or mkavr or anything else :(

    Write what exactly is your problem? Fuski is
    Ext: FF (or 07 if it's not going), high :D 0, low: A2

    You can help yourself with this page, at the bottom you enter in HEX and you have everything you need displayed http://www.engbedded.com/fusecalc

    / Your comment on the project's website has been added, but unfortunately something has gone wrong and the website redirects to the wrong address after sending the comment. If he goes back and refreshes, the comment will be there :)
  • #318 13225317
    Doctore.
    Level 18  
    Posts: 437
    Help: 1
    Rate: 12
    Yo, I have a question, can the capacitor for SD-VCC be 100uF, won't it be too big?
    I would like to use 400mAh lipo with HK for uProg, and how to li-po, they reach 4.2V fully charged and this will cause the uprog not to start, so how to solve this problem?
    Is it possible to add a low-voltage-cut-off function to the software, e.g. 3V, which would not kill the lipol?

    Congratulations for mannequin for the project.
  • #319 13225356
    manekinen
    Level 29  
    Posts: 1629
    Help: 76
    Rate: 2360
    In series with power supply diode 1N4148. From 4.2V it will be a nice 3.5V. The system does not work below 3V (SD will not start) so (with the diode in series) the battery will not discharge below 3.7V.

    Of course, you can choose a diode with a different drop, e.g. 0.5V - then with 4.2V 3.7V will be acceptable and you will use the cell the best.

    The capacitor may be too big. When powered from an efficient source, even 10uF should be enough, you have to check how it behaves.
  • #320 13225398
    Doctore.
    Level 18  
    Posts: 437
    Help: 1
    Rate: 12
    Well, 47uF will probably be ok.
    At what current is 4148 released?
    What about the software charger?
  • #321 13225420
    manekinen
    Level 29  
    Posts: 1629
    Help: 76
    Rate: 2360
    Many people connected the link with the uProg in this way, including me, this solution works very nicely. You will probably find the current in the note of this diode, but it is definitely more than 100mA and the system will not take more.

    There will be no chargers, I do not know if there will be any update. There are no critical bugs, in fact there are some problems with some procks (some are not fully supported) but this can be corrected in the chip.db file based on the uC note. Everything is well described in order to figure it out for yourself :)
  • #322 13225452
    krzysiekdg
    Level 13  
    Posts: 132
    Rate: 33
    And is it possible to program 24cxx memory with it?
  • #323 13225870
    piotrva
    VIP Meritorious for electroda.pl  
    Posts: 6409
    Help: 625
    Rate: 734
    No - read the description, buddy.
  • #324 13226394
    Doctore.
    Level 18  
    Posts: 437
    Help: 1
    Rate: 12
    Ok, but it bothers me a bit that the cell will only be discharged to 3.7V ...
    How about the xmega and some tiny ones?
    It is a pity that the project will not develop anymore :-(
  • #325 13226416
    manekinen
    Level 29  
    Posts: 1629
    Help: 76
    Rate: 2360
    I wrote give a diode with a drop of 0.5V and you will use them more. If not, install the inverter. There will be no PDI and TPI protocols.
  • #326 13227937
    Doctore.
    Level 18  
    Posts: 437
    Help: 1
    Rate: 12
    And this led from version 1.2 is it going to be useful, or not, will it be used?
  • #327 13548728
    Doctore.
    Level 18  
    Posts: 437
    Help: 1
    Rate: 12
    Hi, the layout is lying and dusting for several months and no one still wants to help me with the fusebits in the burn-o-mat, how will it be with these screens?
    Because what the manekinen gives on his website and what is in a burn-o-mat does not look the same.

    As always, because it makes sense, please do not delete my message, it is enough that 99% of inquiries regarding electronics must be directed to American or other forums not very related to electronics, what madness ...
  • #328 13549643
    george2002

    Level 21  
    Posts: 526
    Rate: 158
    As for the led, it works and it is good, when uProg starts and reads the file, then it blinks, about coffee grounds, contact PW, tomorrow at work I will try to read and insert the screen from avr-burn-o-mat :)

    As I promised, I put the coffee grounds in the AVR8 Burn-O-Mat for uProg :)

    uProg - small, fast, portable AVR programmer with SD


    Regards
    George2002 [/ img]
    Company Account:
    GS electronic Grzegorz Stoliński
    2 Pułku Lotniczego 18, Kraków, 31-857 | Company Website: www.gselectronic.pl
  • #329 13559228
    Doctore.
    Level 18  
    Posts: 437
    Help: 1
    Rate: 12
    Thanks george2002 :D
    uProg - small, fast, portable AVR programmer with SD
    One uprog was already programming the other :)
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Topic summary

✨ The discussion revolves around the uProg, a compact and portable AVR programmer that utilizes SD cards for firmware storage. Users express admiration for its design and functionality, highlighting its small size (44 x 39 x 5.5 mm) and fast programming speeds (write: 12.5kB/s, read: 14.5kB/s). Several users inquire about compatibility with various components, such as different LCD displays (notably the Nokia 3310's LPH7779), and the ability to program various AVR microcontrollers, including the ATmega328P and ATtiny series. Issues with SD card compatibility, particularly with SDHC cards, are frequently mentioned, as well as problems related to fusebit settings and display contrast. Suggestions for improvements include adding a battery charging system, enhancing the user interface, and providing better documentation for setup and troubleshooting. The community shares experiences with different configurations, troubleshooting tips, and modifications to enhance the programmer's capabilities.
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FAQ

TL;DR: uProg writes AVR flash at 12.5 kB/s and reads at 14.5 kB/s; “The best results can be obtained with BIN files” [Elektroda, manekinen, post #9597772] Why it matters: those rates cut on-site firmware updates to under six seconds for a 64 kB image.

Quick Facts

• Foot-print: 44 × 39 × 5.5 mm, 5 mA menu current [Elektroda, manekinen, post #9597772] • Peak write: 12.5 kB/s; verify read-back 14.5 kB/s [Elektroda, manekinen, post #9597772] • Supported cards: 128 MB – 2 GB SD/MMC, FAT16/32 (SDHC in roadmap) [Elektroda, manekinen, post #9597772] • Stand-by draw: 0.10 µA; boot surge ≤ 100 mA (card-dependent) [Elektroda, manekinen, post #9597772] • Tested MCUs: ATtiny13 → ATmega2561; auto SCK 4 MHz-62.5 kHz [Elektroda, manekinen, post #9597772]

How do I enter fusebits without a PC?

Choose Fusebits → Manual. UP/DN scroll each hex digit, RI confirms, LE cancels. Default factory bytes are pre-loaded for safety [Elektroda, manekinen, post #9693727]

Why does verification fail after long cables?

Auto-speed starts at 4 MHz SCK and steps down on first error. A 30 cm ribbon may still pass the signature test but corrupt data. Limit length to ≤ 20 cm or set Max SCK=3 in config.ini (250 kHz) [Elektroda, manekinen, post #9597772]

‘File too big’ when flashing ATtiny25—work-around?

Bug in size parser affects HEX < 2 kB. Convert to BIN or pad file, then flash successfully [Elektroda, manekinen, post #10377528] A fix is scheduled in the next release.

How can I speed up the programmer itself?

Set OSCBoost bit0=1 and OSCCAL to F0-FF. At 16 MHz average write rate rises 28 % but some MCUs require SCK capped to 2 MHz [Elektroda, mlassota, post #10118939]

What’s the typical failure after reverse-biasing C5?

Tantalum C5 stripe denotes +. Reversed part shorts the SD rail, overheats, and can burn the PCB within 3 s [Elektroda, krzycho123, post #9826229]

Is Li-ion charging supported on-board?

PCB 1.2 exposes SO8 and SOT-223 pads so you can add MCP73831 charger and LDO. Factory firmware doesn’t monitor charge; add external LED or ADC mod as in user build [Elektroda, MatygaD, post #9773466] A native charger is on the roadmap.

Quick How-To: update uProg firmware from SD

  1. Copy new BIN as 000.bin to card root. 2. Insert card and power-on; blank screen confirms bootloader mode. 3. Press RI to flash; after reboot the splash shows the new version [Elektroda, manekinen, post #9597772]

Edge-case: what if the LCD shows only a dash?

A single dash means uProg shut down. If it appears at power-up, SD Vcc is below 2.7 V; recharge battery or replace C4 [Elektroda, marcin44430, post #10116045]
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