Toying with a two color e-paper display, amazing technology.. Thinking of low power battery display applications #iot
Two color e-paper display
Low power battery operated IoT nodes
Few photos from my tech talk on "Building low power battery operated #IoT nodes", thanks to those that attended
Hot water powered barebone arduino running on internal
Preparing a hot water powered barebone #arduino running on internal oscillator and blinking a LED. Fun and educational #IoT
Energy harvesting board
Found an energy harvesting board that I designed ages ago in my drawer. Never ceases to amaze me how this works, made a video of it working off a peltier element and a t delta of 10 degrees C. Thinking of creating harvestduinoRF? #WearableTech #IoT
Darkflow running on RaspberryPi 3B+ handles well image
#darkflow running on #RaspberryPi 3B+ handles well image recognition with light yolo weights
Grabbed a Raspberry Pi 3 B+
Grabbed a Raspberry Pi 3 B+
Exabyte-sized HDD to fit this raspberry pi image
I guess I need an exabyte-sized HDD to fit this raspberry pi image.. recommendations? #RaspberryPi
Hardware and firmware considerations for IoT edge nodes
I will be doing a tech talk on topic "Hardware and firmware considerations when designing low power battery operated wireless edge nodes for Internet of Things applications". Join me on April 18th, starting 19:15 @ IT step academy https://goo.gl/Txgy7K #IoT
BBoilRF
BBoilRF: my internet-connected relay actuator/gateway with battery powered wireless sensor support, designed primarily as a thermostat.
IoT keyfob project PCB
Secure #IoT keyfob project PCB just arrived
BLE beacons to MQTT
Got some BLE beacons to fiddle with. Part of BLE beacon to MQTT #esp32 #IoT project
ESP32 BLE iBeacon to MQTT proof of concept bridge project
#ESP32 BLE iBeacon to #MQTT proof of concept bridge project.. #IoT
Rewiring messed up SMD connections
Rewiring messed up SMD connections on prototype board
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
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.
Tweeting silicon
A tweeting ESP8266, no proxy service involved – the chip talks to Twitter’s API directly, SSL and all.
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.
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.
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%.
WiFi Thermostat with weekly scheduler
My WiFi thermostat with a weekly scheduler – why I swapped the SSRs for classical 8A relays and what changed on the board.
WiFi IoT 3 channel relay board with MQTT and HTTP API using ESP8266
My ESP8266 relay board: three solid state relays, MQTT + HTTP API, DHT22/DS18B20 sensor support – an open WiFi IoT switching platform.
ESP8266 powered web server + LED control + DHT22 temperature/humidity sensor reading
An early ESP8266 experiment: web server, LED control and DHT22 temperature/humidity readings on the $4.50 Wi-Fi chip that shook up DIY IoT.
Exposing Raspberry Pi’s network setting files to /boot so that they are visible on a PC
Exposing the Raspberry Pi’s network settings to /boot so they can be edited from a PC – handy when cloning SD cards for other networks.
Monitoring my home automation system uptime
Free uptime monitoring for my home automation system with UptimeRobot – a notification when the house goes dark, whatever the reason.
DIY Internet of Things Fire Alarm
Wiring a 9V smoke alarm into my home automation system with a Funky – SMS, Pushbullet and email alerts when it goes off.
You watch too much TV
Measuring my son’s actual TV time by logging the TV’s power draw to emonCMS – house rules are easier to enforce with data.
Live streaming to USTREAM.TV using Raspberry Pi
Live streaming the house martin nest to USTREAM.TV from a Raspberry Pi – motion-triggered stills were not enough.
House martin cam
House martins are nesting in my unfinished tool shack, so the kids and I put up a nest camera instead of peeking in.
Presence detection using phone’s WiFi and Node-RED
Detecting who’s home by pinging the phones’ static DHCP leases from Node-RED – 15 minutes of work and pretty reliable presence detection.