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💬 MDMScreen

openhardware.io 26 Dec 2017, 16:26 last edited by openhardware.io 23 Feb 2019, 18:56

https://www.openhardware.io/view/543/MDMScreen
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mysensors 189 arduino 119 nrf24l01 69 rfm69 60 atmega328p 15 lcd 5 nextion 3 spi flash 2 touchscreen 1
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Ivan Z Hardware Contributor 26 Dec 2017, 21:00 last edited by

Please append support RS485
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mysensors 189 arduino 119 nrf24l01 69 rfm69 60 atmega328p 15 lcd 5 nextion 3 spi flash 2 touchscreen 1

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@mfalkvidd the one that stops at 2.7v I once broke my head over it, then it saw I was looking at the automotive datasheet...
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@SiLeX So it may be due to an incorrect connection? Pins of module are untagged and I connected them according to the positions of schemes that I found online. All modules have same pinout?
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Hello, i'm making some progress; received the components this week. Unfortunately it doesn't work... yet For now i have SanityCheck failure in to logs. I'm afraid my soldering of all these little components is not good. I tested with a multimeter the 4 pins and i have continuity on one of them but maybe not the others so i guess i will have to try remelting all these small regulators ???
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Sorry. Disregard.
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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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They are programmed with the platform that you are using, assuming it support them.
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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

💬 MDMScreen

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