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mirceat

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About mirceat

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  1. The source code for meBarista is still available on several repositories hosted at https://git.mecoffee.nl/explore/repos, as announced on this blog post https://mecoffee.nl/blog/opening-up-mebarista. The iOS meBarista app could be built from the meBarista / meBarista_in_Ionic2 repo.
  2. It's an LM35DT, as mentioned in this topic on some posts.
  3. After Jan has recently disclosed on this blog post his struggle to keep the meCoffee project alive, he uploaded new meBarista versions, stating on v7.beta36: Jan talked since long time about releasing the meBarista code as open source, the great moment might be close, finally.
  4. The poor communication with Jan was a permanent issue. I had my fears when I ordered meCoffee 2 years ago, I was aware it could be a total waste of time and money. There were ups and downs, the balance is definitely positive on my case. I can't imagine me working on an espresso machine without a minimal digital control like meCoffee offers. Sure there are more doubts on the reliability of Jan's latest products, hardware and software-wise. I still prefer to stay on first meBarista version I installed on April 2016, having bad experience with the next meBarista versions or hearing bad feedback on them. My advice: buy this product only if you afford to risk wasting your time and money for a possible better home barista experience.
  5. I wont give up in case Jan doesn't answer. meCoffee pushed my home barista life on a higher level, I couldn't have got it by with any manual technique. Somebody with electronic skills could try to measure the fuses or other meaningful components from the board, even he could replace the faulty components.
  6. The 2 orange discs must be the resettable fuses. Are they located on the lower right corner, when looking at my picture? Please consider my board sports old style fuses, I drew red arrows pointing to them. I don't think you can reset the fuses, they should be replaced when blown up. Send a picture of the board to Jan and ask his opinion.
  7. Hi Chris, I am sorry to hear about your faulty meCoffee. Based on your described scenario, I would rather suspect a hardware fault. The weak point were the fuses back in the time. The latest meCoffee boards come with auto-resettable fuses, but are they failproof? Not sure. On firmware flashing - you'd need the firmware file from the meBarista apk file. How do you get it: use an apk downloader or APK Share to extract the apk file from Android devices. Unpack the apk file into a folder and look into the "assets" subfolder. I am assuming the current firmware is stored into "meCoffee-V9.hex". On previous versions, the file name used to be "firmware.hex". You need the already mentioned tools: an AVR Programmer and a 2x3 male PTH header. If you take a look at a picture of an older meCoffee board here, you'll notice the 6 holes on the lower left corner. This is the place to insert your PTH header. Pay attention to pin 1 marked with a square. Then follow the instructions from the Sparkfun tutorial. In case it helps, please see below the log from my firmware flash operation: C:\Program Files (x86)\programming\Arduino\hardware\tools\avr\bin>avrdude -c usbtiny -p atmega328 avrdude: AVR device initialized and ready to accept instructions Reading | ################################################## | 100% 0.02s avrdude: Device signature = 0x1e9514 (probably m328) avrdude: safemode: Fuses OK (E:FF, H:D0, L:E2) avrdude done. Thank you. C:\Program Files (x86)\programming\Arduino\hardware\tools\avr\bin>avrdude -c usbtiny -p atmega328 -U flash:w:firmware.hex avrdude: AVR device initialized and ready to accept instructions Reading | ################################################## | 100% 0.02s avrdude: Device signature = 0x1e9514 (probably m328) avrdude: NOTE: "flash" memory has been specified, an erase cycle will be performed To disable this feature, specify the -D option. avrdude: erasing chip avrdude: reading input file "firmware.hex" avrdude: input file firmware.hex auto detected as Intel Hex avrdude: writing flash (21586 bytes): Writing | ################################################## | 100% 13.19s avrdude: 21586 bytes of flash written avrdude: verifying flash memory against firmware.hex: avrdude: load data flash data from input file firmware.hex: avrdude: input file firmware.hex auto detected as Intel Hex avrdude: input file firmware.hex contains 21586 bytes avrdude: reading on-chip flash data: Reading | ################################################## | 100% 11.79s avrdude: verifying ... avrdude: 21586 bytes of flash verified avrdude: safemode: Fuses OK (E:FF, H:D0, L:E2) avrdude done. Thank you.
  8. Very fresh impressions from Ho Chi Minh City on this blog post https://misternomadcoffee.com/2017/10/19/saigons-coffee-revolution/. The blogger is a coffee lover and travels around the world, currently living in Thai Nguyen.
  9. Yes, the new meCoffee BLE /iOS is required. Please see: https://mecoffee.nl/blog/a-birthday-present-for-the-iphone-mecoffee-for-ios-immediately-available/ https://mecoffee.nl/order/
  10. Good news for the iPhone users: Jan has uploaded a demo video showing a beta version of meBarista on iPhone5
  11. Great, enjoy your shots delivered under meCoffee control!
  12. I would like to add below the firmware flash instructions, a bit reworked version of the original from https://mecoffee.nl/mebarista/help/support/firmware-flashing/ (currently unavailable). It refers meBarista v4.beta22 and the firmware V4 stored into it. Please note there are differences when working with other meBarista versions. – Close all running App’s or reboot your phone / tablet – Get in front of your machine, as close as possible - Turn on your machine, wait until it warms up and settles down (like 5mins) - Make sure the Bluetooth connection is stable, an unstable connection might hard brick your meCoffee board – Open meBarista, do NOT scan/connect – Navigate to Settings / Support – Enable the firmware update option - Set flash timing to 1000ms – Push the flash firmware option meBarista switches back to the home screen. At the left upper corner 'Firmware intent' appears. After a couple of seconds your boiler light should go off. A couple of seconds later, a text should appear above the 'Firmware intent'. It should be scrolling and end with a value of about 23000 bytes. Do not move! If the operation succeeds, your espresso machine might restart (or not, like on my Gaggia) and the boiler light will come on again. On Android v7.0 Nougat I got a success message on the notifications area. Press 'Scan' on meBarista home screen to connect to your meCoffee. Screen picture at the end of my firmware flash operation here. LE - there is a new page on meCoffee firmware flash here https://mecoffee.nl/mebarista/help/hardware/firmware/ It refers the flash operation for "meCoffee pcb V9" firmware run from meBarista v4.beta32. Please note again the above detailed procedure refers the "meCoffee pcb V4" and meBarista v4.beta22 combo. In case the web page changes its address, google on mecoffee firmware.
  13. The meBarista_v4.beta22.apk file has been uploaded to this address: https://mega.nz/#!0plAlajA!Lv7hl33ujhRK2iNVEGW5asZAiStSHLNUXUV390k7goU The apk file has been freshly exported from my tablet, using the the Apk Share app. Please let me know in case of any issues.
  14. Thanks Simon, based on your experience, the software upgrade is not worth yet. You would need to roll back meBarista to v4.beta22, then start a firmware flash from its settings menu to get back to firmware V4. Do you know how to sideload an apk? I could send you the meBarista_v4.beta22.apk file. Then disable the auto-updates from Play Store!
  15. Hi, have you upgraded to firmware V9 coming with meBarista v4.beta32? I am really curious if it is worth it to risk a firmware flash. For instance, are pump control and preinfusion pause working on the new software?
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