I just recieved my small CNC mill (that will primarily be used for Laser engraving) and want to try milling some PCB. Anyone has a suggestion an a useful PCB that is single sided and can be used for something fun wihtin MySensors range (or not )
@emre299 must be something wrong with the booster. Canique Boost module (I run the site selling it) outputs 3.3V no matter if no load is attached or if 50mA or more are drawn from it. It's based on the MCP16251 chip.
I guess the ebay modules are based on chinese chips having minimum price as the one and only design goal. Years ago I've bought 2 different ebay modules myself to test them, but they were crap (unnecessary LEDs and even if they were unsoldered the modules had bad efficiency).
@evb it's for doing a gasmeter, counting with a reed sensor.
But for my tests, the read sensor is not connected. So nothing wakeup the interrupt.
I just send every 10 minutes the counter, as a keepalive. (Domoticz don't put the sensors as "red" )
First, I was doing test with newbie pcb, and I had strange values.
So I remove everything, and I do test with breadboard and dupont cable.
I just have the arduino pro mini, and the rfm69 solder on a nrf2rfm69 board and a 0.1uF capacitor.
I have 2AA alkaline battery, connected to the VCC/GND pin of arduino and to 3.3V/GND of NRF2RFM adapter.
I measure the current on the cable between battery + and 3,3V of NRF2RFM69 (like in your photo)
I have no scope, so I can't check NSS/MOSI/... and so on. But the transmissions are OK, and everything is working well, except current when sleeping.
I had no time today to do more test today. I will double check everything as soon as possible, try your sketch
In my use of bistable latching relays, where the state of the relay position is information that must be tracked, I have found it to be easiest to use an optocoupler (H11AA1 or PC817C) to feedback the state of the relay position, which is polled at bootstrap. If you have multiple states to read at boot, you can use something like the TCA9548A multiplexer to accomplish the state read and to set your volatile state variables appropriately, and save on your μC pin count.
Thank you for your answer
I'm trying to compare with only pro mini and rfm69 on a test plate, and 2 AA batteries. I have strange result, and i'm doubting about my multimeter.
I'll continue testing and will tell you
@fifo Well done! - probably the new module needed a little extra power and the power brick was already failing so this pushed it over the edge. Failing psu can be difficult to diagnose until they fail completely, especially if encapsulated.
Power supply and cabling are usual suspects in this type of work.
Well done and good luck with the rest of the project!
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