Using Google Assistant to control your ESP8266 devices

From tinkerman.cat 1 year ago in Blogs

In my last post I tried to explain how to access your IoT devices at home from the Internet in a secure way using a reverse proxy. Truth is that I had it running since maybe 6 months ago without giving it too much use until recently. Reason? My Nexus...

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Monitor your TTN gateways with Node-RED

From tinkerman.cat 1 month ago in Blogs

This time I’d like to write a quick post about a small project we’ve been working on at the The Things Network community in Barcelona (@ttncat). We were worried about the monitoring of the gateways we have deployed, both as a community but...

WhiteCat ESP32 N1

From tinkerman.cat 2 months ago in Blogs

I do not do reviews usually, but I sometimes do exceptions. In this case, it’s worth doing it, due to 4 main reasons: It’s a software & hardware open source project It’s local (local to me, that’s it) It’s led...

Useful notifications from your home appliances using Node-RED

From tinkerman.cat 3 months ago in Blogs

Some time ago I worked on a home project to get a notification when my washing machine had done its job based on monitoring its power consumption. There was a good reason for that, the machine was outside the house and I...

RAK833 meets Raspberry Pi

From tinkerman.cat 5 months ago in Blogs

You might have heard about The Things Network (TTN from now on) here or somewhere else. If you have not, then it’s a good opportunity to visit the project and check if there is a community of users around you. I...

M5Stack node for The Things Network

From tinkerman.cat 6 months ago in Blogs

I have a couple of IKEA-like boxes in my home office labeled “Inbox”. They are full of stuff I buy and store waiting for some free time to spend on them. From time to time I pick one of the...

EEPROM Rotation for ESP8266 and ESP32

From tinkerman.cat 6 months ago in Blogs

The Arduino Core for ESP8266 and ESP32 uses one SPI flash memory sector to emulate an EEPROM. When you initialize the EEPROM object (calling begin) it reads the contents of the sector into a memory buffer. Reading a writing is...

Sonoff S31, a world apart

From tinkerman.cat 7 months ago in Blogs

It’s not that other Sonoff products are not “serious” business, but there are a number of design changes in the Sonoff S31 that make this new product a world apart. For the functional point of view it looks like a...

GeekWorm Power Pack Hat Hack

From tinkerman.cat 8 months ago in Blogs

Sorry for the tongue twister 😉 I’ve been somewhat busy lately and it’s been a long time since my last post. I have a few projects on the go but not much time to sit down and write about them…...

Arduino MKR WAN 1300

From tinkerman.cat 10 months ago in Blogs

I’ve been testing quite a few LoRaWan nodes lately for TheThingsNetwork.cat, some based on HopeRF RFM95W (over AVR, ESP8266, ESP32,…) others using Microchip’s RN2483 (an old friend of mine). I have a RAK811 waiting in the INBOX but the last...

PCB fabs

From tinkerman.cat 1 year ago in Blogs

A few years ago (not many) I used to burn copper plates using acetic acid, a.k.a. vinegar. I was somewhat concerned about using stronger acids so it was OK to use another acid, even if it was soooo sloooow. If...