Desk of Ladyada - A Quiver of QT's
This weekend we cranked through 3.5 QT Py designs (we didnt finish routing one, its a toughie!) - we already make SAMD21, RP2040 and ESP32-S2 and we wanted to add some more chips to the mix: ESP32-S3 (dual core version of the S2), ESP32 Pico (OG ESP with built in flash/psram), ESP32-C3 (Risc-V wifi!) and nRF52840 (BLE wonder-chip from Nordic). the last one is what we didn't get to finish routing because its a particularly tough one. The other 3 worked out fine with a 4 layer PCB. We also designed a few 'BFF' boards - that fit onto a QT Py like a shield. Finally, we did get our floppy…
The skinny
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