General Discussion

@fullwavebridge Best to post full code, wiring diagrams and photos first - also tell us what you want and what you are getting. - Then you might get somewhere...

@gohan said in Multimeter recommendation?: It is a common issue I see in these small cheap meters. There is always the openhardware current meter for what you are suggesting Sure but there are other multimeters with a common plug between mA and uA so you can just change range on the selector and you don't have to cut the power to your node during that switch.

@bjacobse answer to myself, it appears that the chep multimeter types with Current clamp, is only capable of measure AC current, I need also to measure DC current (Then I can measure if my my diesel glowplugs are working, without removing anything), so I bought this fairly cheap add on. It provides 1mV/A https://www.aliexpress.com/item/33028995595.html?spm=a2g0s.9042311.0.0.115a4c4dFflk4A How to measure with current clamp your glowplugs: (Not my video, but it gave me some knowledge): https://www.youtube.com/watch?v=dz1Gt2IfC_I

@feanor-anglin said in Newbie wants to do everything wired: Star topology is not recommended to use with RS485, but it is not that it certainly won't work. You have to test it. I know about it, but I hope that with a speed of 9600 and a small cable length it will work ..

Well, I never returned to that topic, because I didn't need it. I think it still isn't implemented, but you have my code from that post, so you can try to modify your copy of Mysensors and it should work. If I remember correctly that was pretty simple modification, new version has probably changed, but not so much I guess.

@zboblamont Thanks for the advice. I don't really want to 'fit' anything as I hope to move next year so something portable that I attach when I use the hose and then bring back inside is all I need. For the time being I have ordered one of those cheap Chinese flow rate sensors and a couple of hozelock adapters to get started with. Then I can take it up a notch from there if I want. Good thing about water for plants is no need for chlorine. After many years of doing this none of plants have complained! - And they include kaffir lime, lemon, tangerine, olive, banana, palms, lemon grass , chillies etc....

@nca78 I understand your concerns and I would like to further sensing in this area - that sps30 you mentioned looks like a prime candidate for a future upgrade. Currently I take 20 readings at one second intervals and then average them. This happens once every 5 minutes and gives a graph plot like this...... [image: 1563015389376-dust.jpg] This is using the Sharp GP2Y1010AU0F but done the right way, not like the build page ;)

@tsunami My setup is max 50m radius and 433MHz standard power RFM69s so a small 1/4 wave whip works reliably even from a below ground pump chamber 10m away. Your 915MHz at 200m SHOULD work on 1/4 wave if obstacle free line of sight, but you could try a 2.4GHz Wifi router at one location and use a mobile at the other to test if you can see the router. I can see at least 3 neighbouring routers identified on my mobile from over 40m away through masonry, 10 on the laptop, so it's a simple enough test. If you can see the router on either, 915MHz should be rock solid with a simple whip and no need of directional antenna.

Perhaps a bit off the wall, but if the objective is an email out, are GSM signals strong enough even at another high point which does afford radio line of sight to the objectives? Used this many years ago for remote monitoring, in one case the GSM atop a 5m pole with a wind generator attached topping up a pair of batteries, so completely self sufficient. Links to the metering points were low power RF, the landowner had no objections. Only problems encountered were vandals climbing the pole, solved by a good coat of Copaslip ;) , and a Stag which regularly danced on a GRP cover to a flow meter chamber, to the great amusement of the gamekeeper :laughing:

@mrhutchinsonmn you're right that the description and the sketch don't add up. They definitely need some work.

This script will be more helpful for beginners. The previous script turns on/off all relays. This one controls only the specified relay. - id: '1562092064918' alias: Power Up Relay_2.1 trigger: - entity_id: switch.relay_4_2 from: 'off' platform: state to: 'on' condition: [] action: - alias: '' data: entity_id: switch.relay_2_1 service: switch.turn_on - id: '1562093186484' alias: Power Down Relay_2.1 trigger: - entity_id: switch.relay_4_2 from: 'on' platform: state to: 'off' condition: [] action: - data: entity_id: switch.relay_2_1 service: switch.turn_off

@mfalkvidd Thank you, this should be the solution I'm locking for. Meanwhile I found the config-description...

@royson84 Hiya. Depending on cost and shipping, I might be interested in your stuff.

Hi, So as I see it I would need to use the hardware serial for the connection to the heatpump and then create a software serial for debug messages. So something like this: #include <SoftwareSerial.h> SoftwareSerial mySerial(10, 11); // RX, TX // Enable debug prints #define MY_DEBUG #define MY_DEBUGDEVICE mySerial #define MY_BAUD_RATE 9600 So the next question is how to present the heatpump to the gateway. Would you create one child id and then define each type of sensor/metric or is there a one-to-one mapping: #define CHILD_HVAC 0 MyMessage msgHvacStatu(CHILD_HVAC, V_STATUS); // Status: ON, OFF MyMessage msgHvacSTemp(CHILD_HVAC, V_TEMP); // Set Temp MyMessage msgHvacRTemp(CHILD_HVAC, V_TEMP); // Room Temp MyMessage msgHvacFanSp(CHILD_HVAC, V_HVAC_SPEED); // Fan Speed or #define CHILD_HVAC_STATUS 0 #define CHILD_HVAC_STEMP 1 #define CHILD_HVAC_RTEMP 2 #define CHILD_HVAC_FANSP 3 MyMessage msgHvacStatu(CHILD_HVAC_STATUS, V_STATUS); // Status: ON, OFF MyMessage msgHvacSTemp(CHILD_HVAC_STEMP, V_TEMP); // Set Temp MyMessage msgHvacRTemp(CHILD_HVAC_RTEMP, V_TEMP); // Room Temp MyMessage msgHvacFanSp(CHILD_HVAC_FANSP, V_HVAC_SPEED); // Fan Speed

MQ are always a bad choice, saturate air around with any gas and they will react ... Mics are used by sensely, but even them aren ot calibrated... and they are a hell to get working even when you have the pins soldered to them.

@yveaux said in MY_RF24_IRQ_PIN on ESP8266 GW: True, and next it doesn't use it? ;-) This could be reformulated as an affirmative sentence. I cut the bridge wiring and continued working as nothing happened.