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💬 Arduino Atmega Bootloader Uploader

openhardware.io 29 Dec 2017, 23:22 last edited by openhardware.io 3 Jan 2018, 23:35

https://www.openhardware.io/view/544/Arduino-Atmega-Bootloader-Uploader
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atmega328 19 bootloader 2 uploader 1
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NeverDie Hero Member 30 Dec 2017, 22:48 last edited by

Schematic?
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bisschopsr 31 Dec 2017, 09:32 last edited by

Hi There Sineverba,

Can you post some more details on this project, like the schematics.

A more detailed BOM would also be great!

Thanks!

Ralph
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sineverba Hardware Contributor 3 Jan 2018, 23:37 last edited by

Hi to all,
added schematics and board!
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Hi, nice projet. I am very interested in it. But why you are using 5 V and not 3.3 V? The ATmea328 works with 3.3 V too and the NRF have to use 3.3 V. The only restriction on 3.3 V is the clock limitation for the Atmega (8 MHz). But with no crystal it don't care. For example you could use an HLK-PM03 instead of HLK-PM01 and remove the linear voltage regulator. So you get more space an everything have the same voltage level. And another point is, it is recommended to use a capacitor (0.1 µF) to ground for each voltage pin (Vcc, Avcc, Aref).
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Nice! Will be interesting to hear about how long the CR2032 lasts.
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BTW, I like how you both made a case for it. Very nice!
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@gohan Yes, you are right, this is done by cnc router.
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When you read the data sheet correctly you can see, that the distance between the pins is different for a AA and AAA battery holder. That`s why I was asking if somebody can recommend a holder that fits.
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Hi @blackchart, Unfortunately, all devices are sold out. Further production is possible only when ordering more than 10 devices (in this case, I also can modify the device to suit your needs).
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Hello. Are these modules still in operation? As it is already an old project I would like to know the reliability and energy consumption? Thanks

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