Found new surprises on the electronic market at Beijing China !
Before I just was buying components, this time I also found already assembled boards and adapters.
Some examples:
8 pin DIP to SOIC adapter - $0.083 USD each
16 pin DIP to SOIC adapter - $0.16 USD each
Several DC to DC modules - $2.50 USD each
4 relay board - $3.00 USD
Linear regulator 3.3 V - $0.016 USD
Board with several SMD adapters to DIP - $1.66 USD
Ultrasonic module - $2.50 USD
8 digit display with SPI interface - $2.50 USD
and more...
so sad I'm not going again, today Saturday was the only day I will have available to go shopping to this place.
David.