Hi, im just getting started with blynk and im trying to get my relay module on to switch on a 10W light bulb, im using the Standalone code and a simple botton in the app to switch GPIO2 High/Low, it works perfectly with a LED but when i switch to the relay with the 10W light i got some reset problems and some times it re-conect atomaticlly but some other it doesn´t.
Im using a HLK-PM03 power supply to the ESP8266 3.3v with a 100µF capacitor along the ground and vcc rails, a 10Kresistor for de CH_PD to vcc.
This is the error i get:
@Costas Yes, I´m using an ESP01
I can see in that link that the cause 4 is due to the Watchdog but how could i fix this?
Also…is there a wifi module close to the cost of ESP-01 that is more robust for working with relays?
Plug and play ESP’s, like the WeMos D1 Mini, are available for around $5, less if you buy the clones. With the ESP01 you need all the extras like a power supply, caps, resistors, adaptors etc. I would only buy ESP01’s if you have a very limited project and require large quantities of them.
You pretty much have to go by trial and error… some will work, some not, some part time, but generally most will recognise 2.5+vdc as a HIGH on their trigger pin.
But another potential issue is how are you powering the relay coils? That needs to have a separate PSU of it’s own, with shared ground to the ESP power.
With the HLK-PM03 i power de ESP module and with a 5v adapter ac/dc to 5V y power de relay both with shared grounds. But i dont think the trigger is the problem because when its only the relay it works fine, the problems comes when i connect the 10W to the relay and turn it on (dont know why if the module its sopossed to be issoleted from the charge).
