This board was designed to test quickly if a PIC microcontroler run correctly, easy to use, make your connections between pin header and LCD, also a socket is available for quartz to test with any kind of frequency. Layout is available.
Archives mensuelles : mars 2013
Max038 function lab generator
Charge pump DC/DC converter with Max756
Here is two version of Max 756 PCB, the MAX756/MAX757 are CMOS step-up DC-DC switching regulators for small, low input voltage or battery-powered systems.
The MAX756 accepts a positive input voltage down to 0.7V and converts it to a higher pin selectable output voltage of 3.3V or 5V.
The MAX757 is an adjustable version that accepts an input voltage down to 0.7V and generates a higher adjustable output voltage in the range from 2.7V to 5.5V
More infos in the datasheet
Layout ARES PCB available SMD and DIP version.
RS232 Interface
Sometimes you need to connect something with serial RS232 bus, a good way is this:
« The MAX232 is an integrated circuit, first created by Maxim Integrated Products, that converts signals from an RS-232 serial port to signals suitable for use in TTL compatible digital logic circuits. The MAX232 is a dual driver/receiver and typically converts the RX, TX, CTS and RTS signals. »
Update 1: Here is a simple Rs232 interface, basically it was designed for a another avorted project, click on the picture to got the layout (Ares) file.
