Schematic PDF verified 200. CircuitMess/Chatter2-Firmware repo exists (18 stars) but gh api reports no license field. No KiCad/Gerber files found in the repo. LoRa/Wi-Fi module marked "VGdd79S868N0S1": per drawing; exact part not otherwise identified
Every link checked 2026-09-27.
Hand this device to your agent. Everything on this page, as clean Markdown and JSON: specs, shops, prices, design files, parts.
Screwdriver included in the 2025 booklet’s package list
Hardware in the linked v2.1 drawing
7
Controller
WT32-S1 module
Display
Drawing labels a 1.77-inch TFT with a 14-pin connection
Power
3 × 1.5 V AA cells per device; six for the pair
USB
USB-C with CH340C serial interface
Radio
Module marked VGdd79S868N0S1 with a PCB antenna
Battery reading
Drawing notes battery voltage cannot be read while USB is connected
Buzzer connection
GPIO22 in the linked v2.1 drawing
Use and programming
5
First connection
Use the Friends app to discover another Chatter and exchange friend requests
Range claim
Maker estimates roughly 2 km under optimal conditions; obstacles and surroundings affect range
Coding
CircuitBlocks; booklet also lists Python and Arduino C++
Custom projects
Screen text/graphics and buzzer programs
Encryption
Advertised by the maker; cipher, key handling and security evaluation remain unspecified
Revision check
1
Earlier library pin map
Chatter2-Library assigns buzzer GPIO19; compatibility with the current board needs checking
No matching specification. Try a chip name, connector or feature.
What still needs checking
The product does not specify regional radio configuration, transmit power, encryption details, runtime or memory capacity.
AA-cell and USB-cable inclusion are not clear in the reviewed package lists; the power drawing specifies six AA cells for a pair.
Panel controller, pixel resolution, dimensions and weight remain unverified for this board revision.
Meshtastic’s Chatter page describes ESP32-WROOM/LLCC68 hardware. Compatibility of the current WT32-S1 v2.1 drawing with that firmware has not been established.
A current v2.1-specific Arduino/Python setup guide and a matching downloadable stock binary have not been verified.
