ARTICLES
There's a few options to program the esp32: Arduino IDE : good. Heaps of support and tutorials. Some key limitations for ESP32, such as sleep modes. ESP-IDF with Eclipse: messy to setup. Works okay. However, …
AJAX or websockets will allow nicer development. I'm trying BootStrap to get a tidy interface. Bootply.com and layitout.com enable you to easily create a css/html set of file to display nice buttons and the like. …
Time Keeping The ESP32 docs say you can set the RTC to keep time in deep sleep ("RTC clock is used to maintain accurate time when chip is in deep sleep mode"). This post details …
I wanted a small, battery-powered timelapse camera. First I tried mobile phones but they were not stable in the long term. Previously I'd used a Raspberry Pi which is good, but not battery friendly, a …
This inverter has a WiFi connection and opens ports 80 (password protected) and 502 (modbus). It's possible to read the modbus registers. There's a handy script that's done all the hard work. This can import …
This works for Grafana v5. Grafana v6 has removed this functionality for security reasons. This explains how I implemented a previously outlined solution , in a step-by-step fashion. I initially struggled to get this running. …
I've previously used EmonCMS to log power and energy data from a IotaWatt / EmonTx system. This works well, but I've been looking for a flexible and fast alternative. The combination of IotaWatt, InfluxDB and …
This post is a collection of tips, in no particular order. It follows on from Iotawatt, InfluxDB and Grafana Setup which is a step-by-step. Do that first, then tweak with these. Snippets for Influx # …
Software Library and Pins for LoRa V2.1_1.6 Site from seller (copied below) shows: Lora, operating on SPI: 26 = DI0/IO0 23 = IRQ/RESET 18 = NSS/SEL (Slave select?) 5 = SCK (clock?) 27 = MOSI …
Like every man and this dog, I'm going to build a battery powered IoT module. Ideally it will Run for >1 year on battery (solar is an option, but an extra complication) Use WiFi or …
This post summarises how I configure IotaWatt, InfluxDB and Grafana to display energy consumption. It uses an AWS EC2 instance. See installation for preliminary details and IotaWatt: Multi-Tenant Setup using InfluxDB # bash influx # …