Accéder au contenu principal


Affichage des articles du 2020

A reliable Raspberry Pi 4B setup with UPS (power bank) and SSD

 After more than 4 years spent in home automation, the thing that bothered me the most was the regular failure of my Pi SD cards. These failures were the consequences of power supply issues and too much IO on the SD card. I could have tried to reduce the IO or to buy a better model of SD card. With a home automation system, you need something that is available when you need it. Not something that stops in the middle of your holidays. So here are the results of my recommendations: For the storage, it is now well known that the SD Card on the PI is subject to corruption, to avoid that you can put your system in read-only mode, try to reduce the writing, or install an SSD. The raspberry pi 4b can now also boot from the SSD. I choose this solution as I wanted to keep the DB on the Pi. For the UPS, I had the occasion to test several Power Bank without satisfaction. Indeed if the power bank you are using doesn't have a pass-through mode, you have a risk that the bank will stop at an unex

AVATTO S06 IR gateway compatible with OpenMQTTGateway

For this new post we will make compatible with OpenMQTTGateway ; the BAKEEY IR remote on bangood or AVATTO S06 on Aliexpress (the links are affiliated). From this discussion on Home Assistant forum I have deducted that the AVATTO gateways may be uploaded with a new firmware, so I bought 2 of them. Thanks to their pinout informations I was able to quickly get this device up and running with OMG. Overview The S06 is a compact IR bridge with FCC, CE and RoHS marks,you can find it for less than 15$. Here is some photos: Disassembly It is not so easy to open, you will need a thin plate, insert it on the junction between the two box parts and do a lever effect at several locations. We can see inside that the micro controller is a TYWE3S, the FCC datasheet  give us plenty of information: ESP8266 1mb flash 50K RAM So we may be able to flash it with an FTDI and upload OMG. Here is the LED setup: It has 7 IR emitters LED, one receiver and one blue LED. the IR LED are bigger compared to my other

SONOFF MICRO USB switch review

I had the chance to test the sonoff micro (product given by itead), this device is an USB connected switch. You can control it from the Ewelink app and by the way power ON or OFF your USB devices. You can also program the start or the stop. It can answer several use cases: Restart your raspberry pi <4 if you are not at your home from a third party application Restart your ESP or Arduino Cut your smartphone power when it is charged Switch on or off devices powered by USB (mini lamp, mini fans...) The device is tiny but nevertheless be carefull it will not fit on all USB port environments. The button enable to power it on or off without smartphone and to put into pairing mode. The interesting stuff comes here, the device is rated for 5V 2.5A, it doesn't support Quick charge or power supply >5V. We see that the device support 2.4Ghz wifi as the other sonoff devices. If we check the current consumption without device we can see that