Saxin

DIY T12 Soldering Station with Mini STC T12 Controller

So i have build myself an soldering station to replace my Dekko "Ol' reliable" 40w hand solder, it works and do the job, but it takes forever to meet the heat temperature. So i build a new one with around 300k IDR

The controller is Mini STC T12 rev 2.1 that can be found from ShopeeID around 130k IDR, or on aliexpress at around 8 USD. I pick the LED version since it's way more cheaper than OLED and STM32 edition, and i don't need any features other than variable temperature and standby mode.

For the handle, i got it from Tokopedia at around 130k IDR. This handle is for Hakko FX9501, but i only need the handle and the pin inside to connect with the T12 solder tips.

For the tips, i got it from aliexpress too, find cheap tips and pay it along with the voucher, so i just need to pay around 4 USD for 3pcs T12 soldering tips.

Saxin

DIY Water Boiler Solar Heating Heat Exchanger Control

Typical Installation in Small/Medium Residential Buildings in Israel

Typical solar water heating installations in small to medium residential buildings in Israel usually include the following components:

• Solar Collectors: Located on the building roof, along with a circulation pump and a differential pump controller.
• Vertical Manifolds (Risers): Running along all building floors. Typically, there are three manifolds: hot water supply, cold water supply, and solar return.
• Electric Boilers: Commonly manufactured by companies like Chromagen, these boilers are installed on each apartment's service balcony and contain an internal coil-type heat exchanger.

Saxin

3 Locations (3 way) Wiring Change for Smart Switch (Shelly)

Refer to two comments below for wiring scheme for changing corridor lights from 3 location regular switches scheme to scheme suitable for smart switch - Shelly and alike. Before commiting to wiring change ensure smart switch is able to work in NC configuration mode.

Saxin

Links:
MinimOsd-Extra, RCG support thread - https://www.rcgroups.com/forums/showthread.php?2591835-New-MinimOSD-fork
MinimOsd-Extra, github repo - https://github.com/night-ghost/minimosd-extra
Night-Ghost's I2C soft slave library - https://github.com/night-ghost/I2c_soft_slave
Night-Ghost's SingleSerial - https://github.com/night-ghost/SingleSerial

Test conditions:
Tested on 24.02.2017, MinimOsd ver. v919, clean Lubuntu 16.04 LTS on VMware Workstation 9, Arduino 1.8.1 

Why ?