so its working!
didnt need the relay after all, the 2n7000 did the trick!
btw cant upload the mp4 video
Search found 25 matches
- Sun Dec 15, 2019 6:01 pm
- Forum: Hardware Projects
- Topic: plant watering
- Replies: 41
- Views: 183985
- Sun Dec 08, 2019 2:13 pm
- Forum: Hardware Projects
- Topic: plant watering
- Replies: 41
- Views: 183985
- Sun Dec 08, 2019 12:53 pm
- Forum: Hardware Projects
- Topic: plant watering
- Replies: 41
- Views: 183985
Re: plant watering
i just bought a 100pcs pack of 2n7000 of amazon for 16euro, should rlast me some projects
- Sun Dec 08, 2019 12:46 pm
- Forum: Hardware Projects
- Topic: plant watering
- Replies: 41
- Views: 183985
Re: plant watering
just measured the input when not connected and it is 4.28v No. It is a 2N7000. You have to connect GND between NodeMCU and the Relay board, +5V (and GND) to the relay board, and then try to switch with a GPIO. I If you have a multimeter, you could measure the voltage at the Relay board input, when t...
- Sun Dec 08, 2019 10:50 am
- Forum: Hardware Projects
- Topic: plant watering
- Replies: 41
- Views: 183985
Re: plant watering
btw, dont care about the hijack, love to hear from the old stuf, now days everything is so small, its (nearly)imposible to solder something out without wasting the component, its all dubble layerd pcb, if somthings faulty, its to the bin and buy a new part
- Sun Dec 08, 2019 10:41 am
- Forum: Hardware Projects
- Topic: plant watering
- Replies: 41
- Views: 183985
Re: plant watering
haha great stuf; i am quite greatefull with chinatec these days :D at least we can have half reliable stuff for cheap, i cant imagine what it would have cost for a simple project to get up and going, if you have to bin somtransistor as from the above you got a realy bad week for smokes :D btw can yo...
- Sun Dec 08, 2019 10:20 am
- Forum: Hardware Projects
- Topic: plant watering
- Replies: 41
- Views: 183985
Re: plant watering
so i could put from an external source 5v dc to the realy 'vcc'-pin and on the 'in'-pin the nodemcu output (pin 4),
but i tried that and the signal on the output pin, was to weak i guess, it just switched once and never again.
any ideas how to work around this one?
but i tried that and the signal on the output pin, was to weak i guess, it just switched once and never again.
any ideas how to work around this one?
- Sun Dec 08, 2019 8:13 am
- Forum: Hardware Projects
- Topic: plant watering
- Replies: 41
- Views: 183985
- Sat Dec 07, 2019 11:13 am
- Forum: Hardware Projects
- Topic: plant watering
- Replies: 41
- Views: 183985
- Sat Dec 07, 2019 11:09 am
- Forum: Hardware Projects
- Topic: plant watering
- Replies: 41
- Views: 183985
Re: plant watering
i encountered another problem, the relay is 5v in the kit and the nodemcu only puts out a 3.3v so i ordered a pack of 3v relays, i tested it with a led and everything worked like a charm, but the relay just clicked once in a while. perhaps you could use a opamp circuit like: https://community.partic...