Quoi de neuf 2021
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Revision as of 10:21, 31 January 2021
Experiments carried out in the past (from 2011) are described hereafter: 2020, 2019, 2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011
February 2021
January 2021
- Waiting for the transformer to drive an CRT (see Quoi de neuf 2020, december).
- I have created a LED "spectrum analyzer" using an electret microphone, a 5532 op amp (see here), a BA3830S spec. anal., and a LM3914 LED display driver. Nothing very complicated, but just a way to occupy time. Here is a picture of the breadboard setup: , the scheme and the PCBs
.
- I am also playng with my cubecell. I have attached a solar panel, a battery, and a CJMCU-8128 set of sensors. The guy transmits it data via LORA to a ESP32 which ralays them to a MQTT Mosquitto server running on an Rasp PI.
