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W48002ASE1_Scheda_SMD2
### DESCRIPTION
Testing board for SMD components
### TECHNICAL DETAILS / COMPONENTS
Board for testing 5 different IC's configurations before creating the "real" board.
There are 5 sections:
1- DS3231 with battery holder (20mm pin spacing); 100nF decoupling capacitor; 1N4148 diode with 220 ohm resistor;
2- CH340 (12MHz quartz, 2x22pF capacitors, pin 4 connected with 0.1uF capacitor);
3- MCP23017
4- ULN2803 with opto-isolated inputs (2xTLP281-4)
5- Mix of 3 and 4: MCP23017 with provides 8 I/O (port A); the 8 outputs from port B are connected to 2 opto-isolators (TLP281-4) and then connected to ULN2803.
All connector headers have standard 2.54mm spacing.
For MCP23017: the I2C address can be set by placing jumpers on pins A0 and A1; A2 is connected to GND.
### LEARN / TOPIC / BUILD INSTRUCTIONS
W48002ASE1_Scheda_SMD2
Project images are for reference only. Actual production is based on the manufacturing files on the project page.
Please review the designer's notes (e.g., PCB thickness) and select the appropriate options.
PCBWay is not responsible
for issues caused by unsuitable parameter selections.
For more important ordering information, please refer to
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