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    Eric
    @ecc1
    @old-square-eyes yes, that bonnet will work well for communicating with loopable Medtronic pumps. It has a female 2x20 header on the bottom (see the pix at https://www.adafruit.com/product/4072)
    But I can't speak to how well the openaps code for the Explorer HAT display and buttons works on the bonnet, if at all
    old-square-eyes
    @old-square-eyes
    @ecc1 OK cool thanks
    I see it now :)
    Jens Heuschkel
    @juehv
    Buttons and display work quite well with my experimental code in the dev branch of openaps-menu ;)
    I'll prepare some documentation when I find time at the weekend or so
    old-square-eyes
    @old-square-eyes
    @juehv thank you. It should be delivered by then.
    javadevelopment4
    @javadevelopment4
    This may be useful for anyone - Turn your pc to lightening speed in 7 steps - https://www.youtube.com/watch?v=n0odMfF2yWQ&feature=youtu.be
    Jens Heuschkel
    @juehv
    @old-square-eyes can't find a good place to put it in read the docs :/ ... I'll qickly write it here: You have to go to src/openaps-menu and pull the dev branch (git chekout dev). That's it for installation. User Guide is here: https://github.com/openaps/openaps-menu/tree/dev
    hope you'll like it ;)
    javadevelopment4
    @javadevelopment4
    17 Tips Before you buy a Laptop in English – https://www.youtube.com/watch?v=iYSGTJDkTzQ
    Eric
    @ecc1
    @javadevelopment4 these posts are off topic for this channel, please stop
    Andre Champy
    @AndreChampy
    If anybody ever thought of making their own insulin pump, here is a prototype I did (the final wearable version would be 2 Medtronic 3ml pump stacked together) :
    https://drive.google.com/drive/folders/1rWr33t4Sv3KvijsWiVv9HmFOkwVrZwyU?usp=sharing
    Andre Champy
    @AndreChampy
    If anybody thinks this “DIY insulin pump” could be one day a solution for T1D or wants to participate in this project, please let me know!
    old-square-eyes
    @old-square-eyes
    @AndreChampy not wanting to discourage POC's, or tinkering... but I think one of the main principles of OpenAPS is safety, and a central part of that is using commercially tested and approved hardware.
    I know it's a prototype, but 3d printed parts are never going to be accurate or durable enough. Some idiot out there will knock this up and decide to hook it up to themselves, and wonder why they end up in hospital when it gets a bump and delivers a huge bolus.
    old-square-eyes
    @old-square-eyes
    Does anyone have schematics for the Pi Hat and Edison radio boards?
    I'm interested in building a new rig and need to decide on the battery configuration.
    Specifically I'm interested in if higher capacity 18650 batteries (pair of 3100 mAh) can be charged by the circuit. Do they go in parallel or series?
    Andre Champy
    @AndreChampy
    @old-square-eyes Thanks a lot for your comments. I understand your concerns but if the people that started openaps had that thinking, we would not have today the benefit of it. Approved hardware driven by “unapproved” software result in an “unapproved” system, which we are on with OpenAps. My prototype is far from a usable product, but I think a safe pump could eventually be done.
    Scott Leibrand
    @scottleibrand
    @AndreChampy thanks for emailing on this topic as well. My apologies for the delayed response. I'm including my email here for everyone else's benefit.
    My main concern with an approach like this isn't security, it's safety. We simply can't guarantee that such a pump could reliably dose only the requested amount of insulin, 100% of the time. Insulin is delivered in extremely tiny (microliter) doses, and those doses have to be extremely accurate with extremely high reliability to avoid a dangerous overdose. The pump needs to be able to survive getting bumped and jostled, dropped, heated, cooled, and any number of other things, all with a 0% chance of delivering more insulin than is safe.
    The FDA approval and EMA CE mark processes are designed to ensure that any manufacturer of devices intended to deliver life-saving but lethal-if-overdosed drugs follow an extremely rigorous process of design, testing, and manufacturing to make certain that overdose situations simply can't happen except in extremely rare cases. This is the kind of reliability that airlines achieve, and is simply not something that a DIY project can aspire to.
    Instead, the approach that we've found to be safest is to make off-label use of FDA-approved and/or CE-marked medical devices that can be remote-controlled to deliver exactly the amount of insulin required and requested. By ensuring that we're simply interfacing with existing approved medical devices (CGMs and pumps) and asking them to do what they've been engineered and approved to do (read blood glucose and dose insulin, respectively) our open-source DIY APS's can actually improve the safety of those using them, rather than presenting lethal long-tail risks.
    I would encourage you to avoid doing anything that could result in anyone using a non-medical-grade pump to dose insulin. That is a very dangerous game and simply isn't necessary: secondhand insulin pumps are still widely available, for about the same cost as building an unsafe DIY pump. And if you're worried about future pump availability, keep in mind that there are lots of new pumps still being produced that are loopable, including from SOOIL, Roche, and Omnipod.
    Thanks again for your efforts to make things better and safer for everyone with T1D.
    -Scott
    old-square-eyes
    @old-square-eyes
    Hi all. This is probably a bit benign for hardware dev. But I need some advice from an electrical engineer. I acquired my first Pi Hat, and sourced a ZeroW. I'm disappointed to see the board won't boot with the hat positioned. In fact the C30 and C29 and/or V1 03 on the radio board get extremely hot when powered. The Pi doesn't boot at all with the hat.
    Once the hat is removed the Pi boots and I can SSH to it (clean install)
    Is this a noob thing?
    How can I troubleshoot the radio board
    Eric
    @ecc1
    @old-square-eyes do you have a multimeter or USB current meter that would allow you to see how much power is being drawn while it is trying to boot? sounds like it could be a short on the HAT (also double check for solder bridges etc on the headers)
    (not an EE either though)
    old-square-eyes
    @old-square-eyes
    Hi @ecc1 thanks for the response... The board looks immaculate to me. I do have a multi metre.
    20200920_094638.jpg
    old-square-eyes
    @old-square-eyes
    Tried on a second Pi Zero W and the same thing happened. It's the component (diode?) next to V1 on the radio board that gets hot.
    20200920_094651.jpg
    Eric
    @ecc1
    @old-square-eyes I think your best bet will be to get it replaced if possible, or consider buying an Adafruit radio bonnet, which works well for RPi rigs
    (but the latter requires a bit of DIY for LiPo battery charging, or else an external USB battery)
    old-square-eyes
    @old-square-eyes
    Seems to have been the cap next to V1. I tried the other USB port and C29 went up in a puff of smoke.
    I spoke to an electrical engineer who suggested I remove the dead cap, which I did. The Pi now boots with the board on and the install script is running.
    Aparantly the components are for over voltage protection, and not overly critical. In fact, by failing, the SMB cap both caused, and restricted damage at the same time.
    Andre Champy
    @AndreChampy
    @scottleibrand Thanks for your detailed feedback and I will rely on the availability of new loopable pumps. Btw, I removed the shared folder.
    Scott Leibrand
    @scottleibrand
    :+1:
    Martin Haeberli
    @mhaeberli
    Sławomir Malinowski
    @sarunia
    Has anyone been able to recognize the coding of time intervals Enlite transmitter signal according to the serial number of that transmitter?
    old-square-eyes
    @old-square-eyes
    Looking for a replacement Pi HAT Display
    This one seems to be very close to the spec...
    DisplayThe Display is an OLED white 128 x 64 dot matrix. The display can show 21 characters across and 8 rows down. The Raspberry Pi controls the display with its I2C port 1 bus.
    From...
    Pin out seems to match (many others don't). Only issue with the one I linked is it's yellow/blue colour, and not white like in the spec. Does that matter?
    Andy Sharrow
    @dramageek
    Color doesn't matter. I mentioned it in the ITB channel, but the pinout can be swapped too.
    Andy Sharrow
    @dramageek
    If you swap R28&30 for R29&31 on the board, you swap which pin is GND/VCC.