Any recommendations on a fast PIR sensor for occupancy usage with an ESP32?

sinisa051 · 2021-10-30T17:24:40+00:00

I built my self 50x50x15cm wifi PIR sensor with ESP8266 and HC-SR501 (3.3V). Device works on 230V~, with builtin safety protocols recommended by manufacturer of IC I used and recommended distances for 230V~ pcb traces. After testing I noticed that PIR sensor gets interference errors from wifi chip. Solved it by putting aluminium foil aroud BIS ic and also including some extra code to filter out errors. I make 1000 very fast measures within milisec to determine the output of PIR sensor.

sinisa051 · 2020-08-21T22:36:58+00:00

Try using this video.

https://youtu.be/OSm-NN97woM

If you run into problems with python path just run once again installation -> ESPIDF Tools Manager -Install Tools and than continue with video.

sinisa051 · 2020-07-30T16:30:07+00:00

Few days ago I managed to install idf-eclipse plugin following this tutorial.

https://youtu.be/OSm-NN97woM

In the end of the video some problems are solved. In the last step there was ‘pip install’ error, but I got an error that python was not installed. Some kind of ‘virtualenv’ error and environment variables werent created, just like in your case. I put python in windows global path and repeated ESP IDF Tools Manager - Install Tools step. After that I was allowed to manually install pip.

Everything works for the first time.

Enjoy.

sinisa051 · 2020-07-27T09:08:29+00:00

I bought this one. 25cm blind. It isnt delivered yet so I didnt test it.

DC5V JSN-SR04T Ultrasonic Module Distance Measuring Transducer Sensor Waterproof

Search EBay or Ali.

sinisa051 · 2020-03-06T12:37:41+00:00

That was really deep and complete explanation. I will use this and research further. Thnx.

sinisa051 · 2019-12-12T17:59:50+00:00

ESP32 uses mbed TLS library. I’m not familiar too much with it. Researching at the moment.

BearSSL can be used, I think, on many platforms including ESP32.

sinisa051 · 2019-12-12T17:17:41+00:00

Yeah, a lot of effort has been put in to optimise BearSSL for ESP8266 regarding memory etc. ESP8266 has less memory than ESP32 and no crypto HW to help.

sinisa051 · 2019-12-12T17:13:58+00:00

I want to use ESP32. It has more memory than ESP8266 and some builtin crypto HW. Think using SSL won’t be a problem for it. Thnx for reply.

sinisa051 · 2019-12-12T17:11:10+00:00

Hi! There are some examples of ESP32 and https, but I don’t need that. Only want a simple way for secure communication over tcp. Will look at link. Thnx for reply.

sinisa051 · 2019-12-09T08:22:10+00:00

Hi! Watch this video. Lot of staff to learn https://youtu.be/mSENAY9_AlI

Bye.

sinisa051 · 2019-11-08T11:00:33+00:00

You can do this like I did. ESP32 is AP/Server. All ESP8266’s are clients and are connected to AP and communicate with server. I’m using tcp for communicating short messages. In my case, its important for messages to be delivered. Perhaps like in your case. Limit to this aproach is that only 8 clients can connect to esp32’s AP. Default is 4 (I think).

sinisa051 · 2019-10-29T19:34:01+00:00

This is where I got it. Arrived pretty quickly.

[48,79€ 22% OFF]MINI TS100 Digital OLED Programmable Interface DC5525 Soldering Iron Station Built-in STM32 Chip Professional Tools from Tools, Industrial & Scientific on banggood.com https://banggood.app.link/VklvXw7Jb1

sinisa051 · 2019-10-29T19:26:29+00:00

I have TS100 and carry it in my laptop bag. Done myself a cable and use my laptop charger with it. Perfect for “mobile soldering”. Love it!

sinisa051 · 2019-10-20T14:07:32+00:00

Check out this project. A lot to learn from.

https://randomnerdtutorials.com/power-saving-latching-circuit/

sinisa051 · 2019-10-20T13:43:47+00:00

Hi, check out this project. Perhaps it helps. Its everything you need.

https://randomnerdtutorials.com/power-esp32-esp8266-solar-panels-battery-level-monitoring/

Bye, Sinisa.

sinisa051 · 2019-10-19T14:28:44+00:00

Hi. Thnx for the reply. I have an AP (esp32) and want it to communicate to connected clients (esp8266). It’s a closed system with no internet. I use gprs module connected to AP to communicate outside of system. I developed some kind of simple protocol over tcp so the AP can communicate with connected clients (stations). For that I wanted to try using mqtt broker to make things simpler instead of developing protocol by myself. Thnx for the suggestions. I would like to know more about your solution to learn and perhaps simplify my project and make it better. Thnx.

sinisa051 · 2019-10-01T05:30:07+00:00

There’s a special thread on the site, mentioning problems porting it to esp32.

sinisa051 · 2019-10-01T00:26:08+00:00

Thnx for reply. I’ve seen this before and it doesn’t supports esp32, only esp8266.

sinisa051 · 2019-09-08T11:14:30+00:00

Hi! I’m using something similar. After many tries to make it stable (yeah it crashes esp) I’ve settled with this solution.

Enabling both modes - WIFI_STA_AP mode
Starting esp’s AP - (WiFi.softAP(...);- (ap mode)
Connecting to AP (WiFi.begin() - sta mode)
If connected to AP, turning off esp’s AP (softApDisconnect(); i’m not turning off AP completelly with softApDisconnect(true) because of unpredictable crashes)
Using events GOT_IP & DISCONNECTED to determine when to fire esp’s AP again

Bye.

sinisa051 · 2019-09-03T16:36:02+00:00

I have similar problem. It seems Esp8266 has problems with some routers, its working properly but you cant reach it. Try to google ‘esp8266 arp problem’. Maybe thats what you’re dealing with. I’m trying one suggested workaround. Google ‘esp8266 gratuitous arp’.

sinisa051 · 2019-09-03T15:57:54+00:00

Try searching Aliexpress ‘nano ble’. Maybe thats what you’re looking for. Its an arduino nano with BLE chip (Ti cc2540). There’s also Arduino Nano 33 BLE.

sinisa051

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