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Atmega328+Pro Mini+Nano bootloader uploader

sineverba Hardware Contributor last edited by

Hi to all!
Want to share one of my project.

https://www.openhardware.io/view/544/Arduino-Atmega-Bootloader-Uploader

This is an Arduino shield to burn bootloader to the 3 different elements of family: an Atmega328, a Pro Mini and finally a Nano.

It is fully tested and working. I'm very happy with this for burn Optiboot on the nodes of my house.

I hope it will help someone.

Have a good day!
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@NotYetRated Hope you'll find good uses and a fun time while building your sensors.
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The output of the display could also be sent over serial, but the whole idea is you can walk around with the doctor and improve your results as you go.
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@OldSurferDude yes, you are correct. this sensor is capable of 50A continuous, which safely I would make it working at 40A max., but for such an important load as in your case I would go for a beefier one, like the ACS75x, 77x, but at this point I would also change the node's form factor for space and insulation reasons. On my application on the RV I have a max. curr. of 13A running on a AWG14-16 cable (European rules for RVs), so I did not ask myself too many questions beside, of course, safety. About the signal, it will be a sinusoidal signal swinging around Vcc/2. Vcc can be easily measured internally on the ATmega328. On all my DC sensors I measure Vcc at every loop, just before measuring the ADCs. Honestly, when the space is not an issue like in my RV, I would rather use a ring core current transformer, and I would get rid of noise, response time, power dissipation, but over all no need to cut any cable. Long story short, it has been a nice experiment and I used it for 6 months, and then I switched back to my RF-NANO based RS485-Modbus - Mysensors bridge connected to an off-the shelf power analyzer. Just for fun I attach a pic of my 12Vdc sensors installed on my RV. Forgive me for the spaghetti wiring on the right side, but this is an area that needs improvement.

Atmega328+Pro Mini+Nano bootloader uploader

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Atmega328+Pro Mini+Nano bootloader uploader

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Welcome Announcements • • hek

Auxiliary Loads and Mains Charger Controller for my Smart Mobile Home My Project • • fsgraz

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11.4kUsers

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Welcome
Announcements • • hek

Auxiliary Loads and Mains Charger Controller for my Smart Mobile Home
My Project • • fsgraz

Halloween Lights
My Project • led strip light ws2812b • • KevinT

Alexa Fauxmo - Mysensor Bridge Gateway / BLE - Mysensors Bridge Gateway
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My Project • power consumption diagnose transmission delays compare modules radio quality doctor range gateway location nrf24 radio • • Technovation

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