[chbot] ESP8266 WIFI Internet of Things beginner...

Fri May 20 05:21:17 BST 2022

  *   “Other changes which I can't remember off the top of my head, having blanked out the wasted hours trying to find out why it does not work.”

I think one of the most frustrating things about the Core is M5 changed the pinout, which means some of the older modules don’t work with the newer core 2 cores.
You have however reminded me of my other applicable ESP device. That being the TTGo TBeam which I use for all my GPS/Lora based projects. Great for tracking the tractor, ute, or simply monitoring temperature in a remote location.

Cheers,
Daniel.

From: Chchrobotics <chchrobotics-bounces at lists.ourshack.com> On Behalf Of Stephen Irons
Sent: Friday, 20 May 2022 12:58 PM
To: Christchurch Robotics <chchrobotics at lists.ourshack.com>
Subject: Re: [chbot] ESP8266 WIFI Internet of Things beginner...

Another ESP32 fan here, and ESP8266 anti-fan.

My preferred device is the 50x50 mm M5Stack range, in a nice housing with LCD and buttons, with a fairly wide range of expansion modules for GPS, LoRa, motor control, relays, etc. They also sell a prototype module with the internal connector and about 35x45 mm of donut-board for you to wire up your own things.

I have also used a number of PCB-only modules (by Heltec and any number of other manufacturers), but far prefer the protection provided by the M5Stack.

Be aware, however, that over the years, M5Stack have changed the device internally, but provide no way to tell them apart, either electronically or by simple inspection.

  *   Display changed from TFT to IPS with the same LCD controller. A nice improvement, except that the colours are inverted, and there is no way to tell, except by displaying a colour and inspecting to see what you have.
  *   Different accelerometer device, with the same I2C address, and a different accelerometer device with a different I2C address, so you have to do some careful probing.
  *   Flash has changed size.
  *   Other changes which I can't remember off the top of my head, having blanked out the wasted hours trying to find out why it does not work.
Schematics are available for all hardware. However, the schematic for the main module is from 2017, and does not represent the 2018 version; later versions have more differences, but no new schematic.

Personally, I like Micropython. Years of playing around with low-quality, special-purpose IDEs put me off the Arduino ecosystem, but it is probably better now, and probably has more libraries readily available than Micropython.

Stephen Irons

On Fri, May 20, 2022 at 10:14, Mark Beckett <m.beckett at amuri.net<mailto:m.beckett at amuri.net>> wrote:

Mike

I have both ESP8266 and also the ESP32 in various forms.

These were useful as small standalone boards and I soldered headers at right angle while developing the project.

www.aliexpress.com/item/32595394980.html<https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.aliexpress.com%2Fitem%2F32595394980.html&data=05%7C01%7C%7C5064bc5a883c4bf3cb1108da39fbe2e7%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637886051280677772%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=3iKEVjFZlFX%2F0Ni1dGkeaIKjWLWto5skIgJtIPBqwV0%3D&reserved=0>.

Some ESP32 have the ability to use an external antenna.

www.aliexpress.com/item/1005001438925793.html<https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.aliexpress.com%2Fitem%2F1005001438925793.html&data=05%7C01%7C%7C5064bc5a883c4bf3cb1108da39fbe2e7%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637886051280677772%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=zLT3gnjdM%2FktA276Q86LIuqiB7DaRdYM6Ym181CqpGY%3D&reserved=0>

There are plenty of ESP32 on Aliexpress just put ESP32 into the search, but I have purchased some of these.

www.aliexpress.com/item/1005001636677018.html<https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.aliexpress.com%2Fitem%2F1005001636677018.html&data=05%7C01%7C%7C5064bc5a883c4bf3cb1108da39fbe2e7%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637886051280834001%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=BwjjYF%2Bd0PHLZVH2KboM6gN5gpbm39jeBTevteBwhS0%3D&reserved=0>

www.aliexpress.com/item/33006577783.html<https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.aliexpress.com%2Fitem%2F33006577783.html&data=05%7C01%7C%7C5064bc5a883c4bf3cb1108da39fbe2e7%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637886051280834001%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=6T1is%2BIfsYe7YZMjy21nORf8UMpBCjddF4DE%2FiCPV7g%3D&reserved=0>

The support in Arduino IDE is good including fauxmoesp which allows emulation to directly interface to Alexa

https://github.com/vintlabs/fauxmoESP<https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fvintlabs%2FfauxmoESP&data=05%7C01%7C%7C5064bc5a883c4bf3cb1108da39fbe2e7%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637886051280834001%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=MY1P%2BUEeXUDCD5mmKYVqN1chuW%2FKxrtW8Dbv0wav58w%3D&reserved=0>

Mark

On 19/05/22 23:52, Mike Barnes wrote:
Hi Team,
I’m looking to have a play with IOT, very much with learner plates on.
Just watched a getting started with IOT https://www.youtube.com/watch?v=UFCmTZUoZ1M<https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DUFCmTZUoZ1M&data=05%7C01%7C%7C5064bc5a883c4bf3cb1108da39fbe2e7%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637886051280834001%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=CnSBykqYfPjkkIg4nDoIeTXR2cr%2BKD3RtSk%2BCnF4B8k%3D&reserved=0>
What board do people here recommend for having a play initially with WiFi on my farm?
These seem attractive price wise at $5 each landed, but are they OK or should I get something else?
https://www.banggood.com/Geekcreit-Wireless-NodeMcu-Lua-CH340G-V3-Based-ESP8266-WIFI-Internet-of-Things-IOT-Development-Module-p-1420166.html?cur_warehouse=CN&ID=511073&rmmds=search<https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.banggood.com%2FGeekcreit-Wireless-NodeMcu-Lua-CH340G-V3-Based-ESP8266-WIFI-Internet-of-Things-IOT-Development-Module-p-1420166.html%3Fcur_warehouse%3DCN%26ID%3D511073%26rmmds%3Dsearch&data=05%7C01%7C%7C5064bc5a883c4bf3cb1108da39fbe2e7%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637886051280834001%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=PEwfkcFBKBdkouy1%2F0nT8vIWShdyewzVJPDGm%2Fqj3%2Fk%3D&reserved=0>
Arduino IOT seems very simple for us non coders 😀
Looking to dip my toe in.
Regards
Mike

Sent from my Galaxy

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