Feeding the internet with even more cat images via @SpritesMods's esphttpd running on #ESP32 esp-idf #IoT
Feeding the internet with even more cat images
ESP32 BLE iBeacon to MQTT proof of concept bridge project
#ESP32 BLE iBeacon to #MQTT proof of concept bridge project.. #IoT
RFM69 on a breadboard
Needed to do quick and dirty PoC test using RFM69 on a breadboard,2mm pich adjusted to 2.54mm
Prototype bring-up sucess
Prototype bring-up sucess
Rewiring messed up SMD connections
Rewiring messed up SMD connections on prototype board
Agilent DSO-X3034A for few hours today
Got my hands on a @Agilent DSO-X3034A for few hours today, lovely piece of equipment other than that you have to sell a kidney to buy one.
IoT tech talk at DXC Technology HPE
Did an #IoT tech talk at DXC Technology (HPE)
Working prototype of ultra low power LCD display
Working prototype of ultra low power (20 uA) LCD display for battery operated wireless temperature #IoT node
Battery operated wireless temperature sensor node code
Heavily revised my old battery operated wireless temperature sensor node code, achieved 15% lower current consumption footprint.. #IoT
Ultra low power status display for battery operated
Working on ultra low power status display for battery operated wireless temperature sensor #IoT
I2C retrofit
I2C retrofit 😉
Recording of my IoT startup tech talk at ISTA conference
Recording of my "#IoT startup" tech talk at ISTA conference https://www.youtube.com/watch?v=gHo0Sgn_E7o
proSmart
Announcing proSmart – a new company I co-founded to design and develop IoT home and industrial automation solutions.
Auto DST adjustment
Ending the twice-a-year clock fiddling: automatic DST adjustment for my microcontroller projects, and why DST barely saves energy anyway.
FOTA update without external flash for Atmega32U4 + RFM69
FOTA for the ATmega32U4 + RFM69 without external flash – the dual-bank trick that Moteino solves with a flash chip, done without one.
ESP32
First look at the ESP32: I got one of the 200 early beta boards of Espressif’s ESP8266 big brother, here are the specs and impressions.
Spectrum analysis with RFM12B
Poor man’s spectrum analysis with the RFM12B – scanning the 868MHz band to check how noisy my chosen channel really is.
RFM69 to MQTT gateway using ESP8266
An RFM69 to MQTT gateway on the ESP8266 – Andrey Balarev and I wrote the missing RFM69 driver to bridge sub-GHz nodes to Wi-Fi.
Local hostname for connected devices
Reaching a headless IoT device after DHCP: local hostnames with mDNS/NetBIOS instead of hunting IP addresses in the router UI.
The initial setup problem
The initial setup problem: how to get an IoT product onto the user’s Wi-Fi without killing their enthusiasm – options compared.
My own cloud based version control tool
Building my own cloud based version control tool – GitHub is great until you want your code history on infrastructure you control.
Free signed SSL certificate for my blog
After the DDoS and daily hack attempts, this blog now runs on a free signed SSL certificate – how I set it up.
DDoS attack on my blog
A DDoS attack is hammering this blog with thousands of HTTP requests per minute – what the hosting provider offered and what I did instead.
Tweeting silicon
A tweeting ESP8266, no proxy service involved – the chip talks to Twitter’s API directly, SSL and all.
Some thoughts on security in terms of IoT
Some thoughts on IoT security: billions of records in transit daily, and most of the sensors sending them were never designed to be safe.
Firmware Over The Air (FOTA) for ESP8266 SoC
Firmware Over The Air (FOTA) for the ESP8266 – why every embedded project needs remote updates and how I implemented mine.
Physical vs Virtual
The $35 Raspberry Pi isn’t really $35 – comparing the true cost of physical Pis against virtual machines for home automation duty.
Funky v3 with RFM69CW using LowPowerLab’s RF69 library
Running the Funky v3’s RFM69CW on LowPowerLab’s native RF69 library instead of Jeelib – what changes and what you gain.
Using DS18B20/DHT22 temperature sensor with internal pull-up resistors rather than external ones
Testing a 4-line OneWire library change that lets the DS18B20 run off internal pull-ups – no more pesky external 4.7K resistor on SMD boards.
Using RFM69CW instead of RFM12B
Swapping the RFM12B for the pin-compatible RFM69CW – +30% range and better sensitivity for roughly the same price.
Speech generation with Node-RED
Speech generation with Node-RED: the house reads notifications aloud so I stop picking up my phone 50+ times a day.
DIY Internet connected smart humidifier
Turning my open source WiFi relay board into an Internet connected humidistat – fan coil heating kept our indoor humidity below 30%.