An Arduino based IC tester with smart touch

IT is always a good practice to test every electronic component before mounting to PCB. You never know weather it is faulty, or worse counterfeit. Logic IC’s aren’t exception. With this smart IC tester, all you need is to wack it in and confirm it is working as should. The other potential other of IC tester is detecting unknown ICs on the fly. The design of IC tester consist of several building block including Arduino Mega 2560, 2.4 inch TFT LCD. Custom IC tester shield PCB with ZIF socket. Arduino code is located at git repository where you might find updates and feature enhancements. Probably the most tedious task was to rpepare IC database which is saved as .txt file on SD card. Currently the list is very short and needs serious contribution to make it large enough for being practically useful. Continue reading

Displaying analog signals on TFT LCD display with Arduino


If you want to see analog or digital signals there is always an oscilloscope where you can choose various parameters (scale, time). But if you are building a project where you only need constantly to monitor some known signals like audio or sensor data, then oscilloscope would be an overkill. Why not to include TFT LCD display module to your project and have visual feedback on what’s going on. dmainmon in his instructable have shared his demo where he used Arduino Mega 2560 R3 and 2.8” TFT LCD display to display the analog signals of your choice. In his demonstration he used couple signal sources: light sensor and audio sensor. The graphs simply compile on LCD display continuously. He implemented simple touchscreen menu where he can select some properties on how those graphs are displayed. He can select graph color and sweep direction. Continue reading