i built it a couple of years ago, but it's operative for about three months.
I used :
arduino mini pro 3.3v/8Mhz powered by a 3.7v 14500 Li-Ion battery
PZEM-004T (modified to work at 3.3v)
It's a simple watt/energy meter that sends data to the controller(domoticz) every 40 secs, the PZEM-004T does most of the work.
Great achievement, congratulations
I like that you also tried Nerd Ralph's 3-Pin configuration and got it to work. I tried it once but somehow it didn't connect to the radio, so discarded this idea. Also I thought it might be cheaper (from a memory point of view), just to use one bus. Nice work on stuffing all this in 8K
It would be great if you reported in a couple of weeks how stable it's running. Did you have a chance to measure the power consumption of the hole system?
I got it from CPC in the UK which are owned by Farnell
You may have to make a slight mod to the board or enclosure to make it fit.
@Yveaux said in nRF24Doctor:
I've run multiple gateways using W5100 on hw spi with atmega328 and never had any issues apart from that SD card select line.
Very interesting. I just (few weeks ago) built an Ethernet gateway recently and at the time followed the recommendation for soft SPI. Then more recently I read about hardware SPI being required for MY_RX_MESSAGE_BUFFER_FEATURE which of course would be a valuable feature on a gateway.
Did you ever investigate further? Even if not, I will probably do so on my own, sooner or later, as I have a few of the various W5500 cheap modules here...