Building 3d printer is EASY
Serious about studying Robotics? Then you need to have 3d Printer. Yes, you can do without it...
But it will slow you down, big time. And by the way, it is possible to achieve with $100 budget.
ESP 8266
- About ESP8266
A very brief introduction to what it is and why is it so popular.
By ESP8266 here and everywhere else I mean NodeMCU, as it has all the necessary extras to make it easier to use the
controller.
- Installing ESP8266 in Arduino IDE
We are going to use Arduino IDE
Arduino is a very popular controller, and its IDE is popular, too. So NodeMCU was made compatible with it,
and you can write Arduino code (just keep in mind that pin numbers are different), and it will work.
Follow the link above to add NodeMCU support to your Arduino environment.
- Blinker
- Thermistor
- Web Server
- Web Server + Thermistor
- Multiple Analog Sensors with NodeMCU Web Server
74HC 4051 - a 8 channels multiplexer.
Sometimes we only have one analog port available on our controller, and still have to
read data from multiple sensors. This simple chip ptovides a nice solution.
Pulse and Cardiography
- MAX3010X (101, 102, 103).
These are cheapest solutions on market, and I'll try explaining why they should not be used.
Other
- NRF24L01 2.4 GHz Transceiver Module.
There are many ways of sending data between Arduino (or similar controller) and something else, and one of the most
convenient is by using NRF24L01 transceiver module. It uses the 2.4 GHz frequency and it can operate with baud rates from 250 kbps up to 2 Mbps.
The higher the baud rate, the shorter the distance, but if used in open space and with lower baud rate its range can reach up to 100 meters.
Plus, there are also anthennas to increase it..
- 74HC 4051 - a 8 channels multiplexer.
Sometimes we only have one analog port available on our controller, and still have to
read data from multiple sensors. This simple chip ptovides a nice solution.
- XY PWM Frequency Generator
This is part of my Cryonics project: i am going to check the claim of
some Japanese companies that water freezing point can be affected by EM and electric fields.
The Generator will be used to feed the coil, producing EM field of different frequencies.
I am going to publish results here when they are available.
- Can we use Peltier Elements for Freezing?
Peltier elements are known as a simple alternative to compression coolers and we can
often see opinions that they can be used to produce deep freezers, going as far as -40C.
This is... kind of true. However, there are some formidable challenges on this path
making Pelier elements nearly useless for practical freezing applications.