Esax30cj

SU-22T Offline Voice Development Board

Overview

1. SU-22T physical image

. 2. Improvements compared to the CI-03T offline voice development board: CI-03T development board link.
1. Replaced the speaker interface PH2.0 female connector for easier plugging and unplugging (the previous PH2.0 connector was too tight, causing damage to the PH2.0 wires during plugging and unplugging).
2. Added a diode between the communication lines of CH340 (TXD) and SU-22T (RXD) to prevent CH340 from flowing back current into SU-22T.
3. SU-22T program download instructions
will be added later; see the development package below for details.
4. Note
that D2's placement is not ideal, so you need to solder it together with the module and CH340. Do not solder D2 last, as the space is too small. If you have a hot air gun, then disregard this, hehe!

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Update:2026-03-26 16:43:05

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