Category Archives: Uncategorized

Robot Thoughts

Friends of mine and myself met and discussed an advanced robot design. Here some impressions:

 

Smart Electronics LCD Module Display Monitor 1602 5V Blue

LiquidCrystal-Display blue 1602 Arduino Nano

I recently bought several “Smart ElectronicsΒ LCD Module Display Monitor 1602 5V Blue” for building a wifi alarm clock. It uses the very common Hitachi HD44780 driver. To verify if they are working I followed this well described tutorial on arduino.cc and used a arduino nano for that. Removing the 10k ohms resistor, because it dimmed the LED background light way to much and after adjusting the potentiometer to about 1,64k ohms the visibility of desired output was optimal.

For the sake of documentation the:

Wiring

Code

The next step is to connect it to an esp8266 and figuring out if the new 3.3V signal strength will be enough. A possible solution would be to use the esp8266 only as a communication device.

VW T4 Project – War against Rust – Battle V – Sill Part Two - welded sill

VW T4 Project – War against Rust – Battle V – Sill Part Two

As I learned recently stick electrodes are not suitable for welding thin sheet metal of a cars body shell. The electrodes tend to burn holes instead of welding anything together. Unfortunately, all other welding techniques like MAG,MIG, WIG (TIG) welding, require expensive hardware and some degree of education.Β  After some research I found a rent-able workshop including hydraulic lifts, all kinds of tools and MAG-Welding equipment for 8€ an hour. After some practice welding on small pieces of steel, I felt confident enough to start handling the spots i prepared as described in part one:

To improve the durability of the inner surfaces I used a new rust converter called fertan. As research has shown it is used by a lot ofΒ  car restaurateur workshops and is quite effective protecting the metal from new rust by creating anΒ  protective coat. After 24 hours of letting it dry I additionally added another newΒ  rust preventing oil: Owatrol. It’s a synthetic resin based oil able to prevent rust to grow by cutting it off from water and air. By that, the spot should hold 2-3 years without replacing the complete sill.