ESP32 Cam OV5640 Board
Setup Getting Started Arduino IDE (quick and dirty) Install Test Camera ESP IDF with VSCode (recommended) Then install ESP IDF toolchain and […]
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Different Voltage References with IotaWatt
There’s a few “built in” voltage references (in tables.txt version 0.0.8): They seem pretty different: {“model”:”DCSS AC910(Aus)”,”mfg”:”Radio Parts”,”cal”:20.72,”p50″:[2.17]}, {“model”:”Powertech MP-3027(Aus)”,”mfg”:”jaycar”,”cal”:23.18,”p50″:[0.92]}, Note the […]
Timeseries Data Schema
Different code uses different formats for Time Series data. With query languages converted to, say, Python lists and dicts, the structure can […]
Encode custom models to Django’s JSONField
Problem and then you want to serialise it, say as a ‘snapshot’ for rendering or logging, and you want to store that […]
CTs for IotaWatt 8266
CT Orientation Echun (ECS) and Accu CTs can be used with the IotaWatt. To align with current flow: Big CTs – configuration […]
Light footwear for ski touring
If you’re backcountry touring and need to train/hitch/etc to the start, it’s awkward (though funny) to wear boots. What is a really […]
Testing a LilyGO: esp32+4g = 7670SA
References The Lily There are heaps of models. Mine is 7670-R2-SA. SA is South America (also Australia). R2 is maybe revision 2? […]
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Raspi (Zero W or Rpi 4) router with wlan1 Wifi Dongle
Pi Zero There are a few options to do this. I used the official documentation and adapted it to create a script: […]
InfluxDB1 to InfluxDB2 with SSL
Install new Ubuntu 20 LTS on AWS (t3.medium). ‘t3 is better value than t2’ (tried installing influxdb2 (auto upgrade from v1) then […]