PCB of the Day! The 2.8" TFT Shield revision finally working nicely 🔧📈✅
August 21, 20230m 57s
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Show Notes
Whew, it has been a JOURNEY to revise this 2.8" TFT shield https://www.adafruit.com/product/1651, but we finally see the light at the end of the tunnel. By setting up the TSC2007 through a secondary LDO connected to the power-reset chip, we've eliminated the annoying I2C latch-up. So now we have to design a tester. In this case, we will use a Metro RP2040 https://www.adafruit.com/product/5786, quickly becoming my go-to Metro for test jigs since it has many GPIO, a built-in ROM bootloader, and fast peripherals. Here the chip looks for an SD card plugged into a shield, then displays the image with a touch paint interface for testing all functionality fast! We will order these PCBs tonight and finally put this revision behind us.
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