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Greetings;
I’ve just been reviewing the schematics for Defusable clock and the recommended FTDI Friend for programming interface and I noticed a discrepancy. The schematics for the FTDI friend, and every other Arduino compatible FTDI board I’ve found, have the TX and RX pins reversed from what the Defusable clock schematic shows. The FTDI boards sequence is gnd, CTS, vcc, TX, RX, RTSDTR. The clock. as I’ve been able to trace the schematic, is gnd, NC, vcc, RX, TX, Reset. Now I realize the CTS is not used on the clock, and RTSDTR is probably Reset, but (assuming pin 1 is gnd) RX is on pin 4 and TX on pin 5. On the FTDI Friend, RX is pin 5 and TX on pin 4. Can you explain this?
The TX of the Defusable Clock connects to the FTDI Friend RX. The RX for the clock connects to the FTDI Friend TX. That’s how serial devices communicate. One device transmits, and this needs to be connected the the receive pin on the other device.
Ohhh… (Smacks forehead) How silly of me! Yes, I understand. TX connects to RX. I feel like an idiot!
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