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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
*PCBWay community is a sharing platform. We are not responsible for any design issues and parameter issues (board thickness, surface finish, etc.) you choose.
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