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49 lines
1.6 KiB
Plaintext
49 lines
1.6 KiB
Plaintext
---
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id: chatter
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title: Chatter device
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sidebar_label: Chatter
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sidebar_position: 14
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---
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The Chatter is a DIY kit sold by CircuitMess. It is intended as a STEM toy and comes with a nice firmware allowing to connect to other Chatter and exchange messages.
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However, it's HW is similar to most Meshtastic nodes, with an ESP32, a LoRa chip, a screen and few buttons.
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There's two versions of the Chatter available with very few actual differences.
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Chatter V2.0 sports:
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- one button (Button 15) wired directly to the ESP32 (pin 36)
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- an i2c port to easily connect a GPS
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- a different routing
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Both versions are fully supported by Meshastic with the same firmware.
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The Meshtastic firmware works with the stock hardware, however, the LLCC68 LoRa chip cripples the RF capability of the device. As is, the Chatter can only communicate on the Medium-Slow channel.
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Switching the chip with the pin-compatible and more capable Heltec RA62 (as mentioned in this Github issue https://github.com/meshtastic/firmware/issues/2896) unlock the full potential of the device.
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## Specifications
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- **MCU**
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- ESP32 WROOM (WiFi & Bluetooth)
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- Bluetooth 4.2
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- **LoRa Transceiver**
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- LLCC68
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- **Frequency options**
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- EU-868 MHz
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- **Keypad**
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- 74HC165 based serial keypad
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- **Connectors**
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- USB-C
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## Features
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- Integrated Keypad for on device message input
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- 1.3 inch OLED screen
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- Optional I2C GPS Module
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## Resources
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- Firmware file: `firmware-chatter2-X.X.X.xxxxxxx.bin`
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- [Official build guide](https://circuitmess.com/blogs/resources/chatter-build-guide)
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