
Digital IC Checker
STDDigital IC Checker
License
:Public Domain
Description
Digital ICs, such as NAND, NOR, AND, OR, XOR, Decoder, and Encoder ICs, are essential building blocks for creating digital circuits. I keep a collection of these ICs in both DIP through-hole and SMD packages. After repeated use in various breadboard circuits, some ICs occasionally develop faults, such as one or two non-functional gates or complete failure of the IC. Identifying faulty ICs can be challenging, especially when they are part of a larger circuit. Therefore, I prefer to test these ICs before using them in a new project. However, manually testing all the combinations for every gate is a time-consuming process.
To address this issue, I came up with a simple yet unique solution to automatically test these ICs using a Raspberry Pi Pico. I mounted the Raspberry Pi Pico on a PCB equipped with several IC sockets to accommodate different pin counts, along with some passive components and voltage regulators.
Design Drawing
BOM
ID | Name | Designator | Footprint | Quantity |
---|---|---|---|---|
1 | XL-3216UYC | 8PIN_IC,14PIN_IC,16PIN_IC,CODE_RUN,POWER | LED1206-RD | 5 |
2 | 470uF | C1 | CAP-TH_BD8.0-P3.50-D0.6-FD | 1 |
3 | DCBARRELPTH | DC_BARREL_BASE1 | DCJACK_2MM_PTH | 1 |
4 | Switch,6*6*10Plastic head,260G, 0.25mm,Straight line | HW_RESET,SW_RESET | KEY-6.0*6.0-2 | 2 |
5 | UART_PORT | J1 | HDR-M-2.54_1X4 | 1 |

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