Телефон на 600 квартир

Приветствую всех! Когда-то давно попался мне на просторах вот такой мем: Посмотрел я тогда на всё это и забыл. А недавно, встретив его ещё раз, подумал: что, если попробовать сделать такой девайс в реальности? Как насчёт собрать такой телефон, по которому в самом деле можно будет позвонить? Именно этим-то мы сейчас и займёмся.

https://habr.com/ru/companies/timeweb/articles/885068/

#timeweb_статьи #1_апреля #домофон #cyfral #цифрал #троллейбус_из_буханки_хлеба #raspberry_pico #rp2040 #sim800l #tp4056 #dw01 #индикатор #кнопки #переключатели #разъёмы #реле

Arduino Pong with linear pots

https://makertube.net/videos/watch/23473d54-da5e-4b89-be40-77a05fb1deb4

I was testing my "5V #solar panel" using an adjustable load power tester.

The "MPP" seems to be between 400-500 mA, after which it would fail to charge the battery (voltage falls below 4.2V at ~440mA draw).

Now to figure out how to tweak the miniature R2 resistor on the #tp4056 board...

My #solar + #tp4056 + #lipo + #esp32 combo was having issues when I connected the esp32 to the tp4056 via crocodile clips for testing the thing out. It would drop voltage below 3V and brown out, rarely managing to boot.

It turns out all I needed to do was solder the damn power connection. Stable power delivery over night, and this is without any power optimization like deep-sleep, sending data every 15s.

It's alive!

My DIY outdoor weather sensor based on #esp32, #solar panel, #tp4056 battery charger with #lipo battery, #sht30 as the temperature+humidity sensor, #bh1750 as the light intensity sensor, and a voltage divider to monitor the battery voltage. All values are being collected by #esphome running on the esp32 and sent to my #homeassistant running on a raspberry pi.

Now to find a reasonable case for this and throw it somewhere in the garden within the reach of wifi...

The #TP4056 is an amazingly versatile chip, if you skip the USB port it accepts 4.5 to 6V, perfect for a small solar panel. It can then be used to power a microcontroler like an ESP32 that I plan to.

Inspired by my favorite guy with a swiss accent: https://youtu.be/37kGva3NW8w

However I should have checked my order - my panel easily saturates the 200mA limit of the component I got. And I don't have SMD resistors nor skills.

#diy #electronics #solar #lipo #esp32

[Bigclivedotcom] busts a myth that those cheap Ebay/Aliexpress TP4056 lithium polymer battery charger modules will end up overcharging your battery if you keep them in circuit powering a load (e.g. a string of LED fairy lights)
https://youtu.be/f2yMs-JAyQM

#electronics #YouTube #BigClive #LithiumPolymer #LithiumIon #TP4056