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AJMRTC CardKB2 Stack Mini Keyboard Module, ESP32C61 SoC, 42Key RGB Indicator, BLE WiFi 6, USBC Input Controller, Supports I2C UART ESPNOW for Maker Embedded DIY Projects
- - Compact cardsized CardKB2 mini input controller built with ESP32C61 processor, equipped with 42 physical keys, programmable RGB status indicator for embedded interaction
- - Multiple communication options including BLE HID, WiFi 6, I2C, UART and ESPNOW, flexible wired and wireless connection for diverse host hardware setups
- - USBC port handles power supply and firmware flashing; builtin overvoltage protection improves powerinput safety during project development
- - Supports Fn / Sym multikey combinations, preflashed firmware for outofbox use as wireless Bluetooth keyboard without heavy programming
- - Reserved M2 mounting holes for secure integration; ideal for portable text input, IoT terminals, embedded HMI and student STEM maker experiments
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Overview
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AJMRTC CardKB2 mini keyboard module is a cardformfactor input controller powered by ESP32C61 RISCV microcontroller. Featuring 42 keys, RGB status LED and multiple communication stacks, this unit works as both wired and wireless input device for embedded and makeroriented builds.
Preinstalled firmware enables BLE HID keyboard function, I2C, UART and ESPNOW data transmission right out of the box. Users can trigger Fn and Sym key combinations to access symbols, capitalletter modes and function shortcuts. The USBC interface delivers power and allows custom firmware upload. Integrated overvoltage protection defends circuitry from abnormal input voltage.
M2 mounting holes simplify permanent installation inside enclosures. Compact lightweight design fits custom portable gadgets. Suited for DIY wireless keyboards, embedded system manmachine interfaces, batterypowered IoT control panels and electronic education practice. Custom code development is supported for advanced project customization.
Model: CardKB2 Mini Keyboard Module
Main Chip: ESP32C61 (RISCV 32Bit SingleCore @120MHz)
Flash Memory: 4MB
Key Count: 42 Keys, Reset & Boot Buttons
Indicator: Programmable RGB LED
Connectivity: BLE, 2.4GHz WiFi 6, I2C, UART, ESPNOW
Port: USBC (Power & Firmware Flash), HY2.04P Expansion Port
Protection: Input OverVoltage Protection
Dimension: 84.7mm × 54.3mm
Mounting: Reserved M2 Mounting Holes
Application: Wireless Input, Embedded HMI, IoT Controller, STEM Maker DIY Projects
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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Return Policies
- Return for refund within: 30 days
- Return for replacement within: 30 days
- This item is covered by ThermalNest Return Policy
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