Hey Gary, thanks so much for taking the time to comment! Yeah I agree that they are useful for the kind of projects you describe, just personally I think it's more convenient to work with a development board. I think the video might have come across a little negative on the board, I didn't really mean it like that, it was more that I would recommend the development boards over the ESP01. I was actually only thinking on the way to work this morning that I didn't make it clear that functionally from a WiFi point of view these are the same chip, I'll try clear that up in the next video I do on them. ( The project I mentioned at the end is where I'm controlling LED lights from a webpage) Price wise, an ESP-01 is roughly $2 delivered from Aliexpress while a clone Wemos D1 mini (which I have never had any problems with) is about $3 delivered. Personally for the sake of a $1 I would prefer the D1 mini as i mentioned I power most of projects through USB and being able easily program it and have the serial monitor available is a big bonus too. I take your point on size, but I as mentioned on the video I was surprised that it isn't that much smaller than a Wemos D1 mini. Yeah, the fact that these chips can do any of this is still crazy to me! How are you going to detect the cycle is done? I might do the same myself :)

Brian Lough I too keep a good stock of D1 Minis and there is so little difference in price, that's a fact. I agree they are so simple and a really good compromise in size, IO and power pins, maybe my inner environmental manager tells me it's a waste to use a US to serial converter once and often a half dozen IO never! For the washing machine I was thinking along the lines of a switching power supply matched up with an esp8266 and a mini current transformer on the power line to the door switch. This drives the indicator on the door at 220Vac so the current transformer means no dangerous ac potential on dev boards. In this case I have a few 5v power supplies and a can't help thinking voltage divider on the analog pin of a D1 Mini is the winner on account of the on board LDO reg and analog channel.

Yes, they are GPIO 1 & 3

+Gavin Smalley good tips! I haven't really used the esp01 since this video, I must use the few I have up!

I quite like the ESP-01. If you think of the Wemos as equivalent to an Arduino Nano then the 01 is kind of the ESP version of the ATTiny85. A lot of power in a relatively small space. Hope you enjoy thinking up projects to use them.

can you peade tell me that when I use it GPIO 0 AND CONNECT AN LED WITH IT THE BOARD GOT RESET ALL THE CONFIGURATION SETTINGS

@Random Duo just connect CHPD pin to Vcc pin and your esp 01 can run

The blue ones have 512KB. The newer black ones have 1MB.

@@joshuarosen6242 thank you!

Yep, there are now......but not when Brian made this video, as you are probably aware.

Hi, yeah you can replace with a button if you wanted (not 100% sure when you need to hold it down, possibly just when plugging in) or you can just leave it connected all the time, but it will always go into programming mode if you do that

Brian Lough okay thx brian :)

how about check if your phone is registered on your wifi network? ($arp -a or something)

Muhammad, in case you are still waiting for an answer, it is GP00 that should be grounded to go to load mode. I also pull-up EN to 3.3V.

+v1nce n7 yeah you need to install esp8266 to the arduino boards manager There are steps how to do it here ukposts.info/have/v-deo/eXaGdYONfbChuKs.html

Thanks!

Just in case you never found out mate ukposts.info/have/v-deo/oqKhlod4m4d_12w.html

+Arthur Pearce you can tell by looking at them. The fake ones tend to have a more square PCB. Honestly though I use the fake ones all the time and never had an issue with them. If you had one your not sure about if you wanted to post a picture of it I could tell you They are about half the price for a single unit delivered

I think this video would be a good start to a project like that ukposts.info/have/v-deo/sXaaf3qYmY97kn0.html You would need to swap out the push button for a door sensor is something but it should be easy enough

In newer models of the EPS-01 the built-in LED is set differently. In the Arduino IDE you could try changing the 'builtin led' option under Tools to 1 or 13 or 16.

@@allcoolandnew Thanks for that. 1 on mine.

To get it to work for me under "tools" change "Builtin Led" to 1