- Brand Name: WEMS
- Compatible Brand/Model: None
- T-Watch Keyboard: H417
- Keyboard: H423
- J-Link: B101
- T-Watch Keyboard lora: H417-01
Product Description
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Hardware Specifications
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| Chipset | ESP32，dual-core MCU,PMU power management |
| FLASH | QSPI flash 16MB |
| SRAM | 520 kB SRAM / PSRAM 8MB |
| Button | Power key , IO36 |
| Extended function | Reference enhanced version and sensor kit |
| USB to TTL | CP2104 |
| Modular interface | UART、SPI、SDIO、I2C、LED PWM , PWM、I2S、IRGPIO、capacitor touch sensor、ADC、DACLNA |
| On-board clock | 40MHz crystal oscillator |
| Working voltage | 2.7V-3.6V |
| Working current | About 70mA |
| Sleep Current | About 1mA |
| Working temperature range | -40℃ ~ +85℃ |
| Size | 91.71 x 70.64 x 25.33mm |
| Weight | 56.23g |
| Display: | 1.54 inch LCD capacitive touch screen |
| Sensor: | BMA423 three-axis accelerometer, built-in step counting algorithm, activity recognition / tracking, advanced gesture recognition. |
| RTC clock : | PCF8563 |
|
Power Supply Specifications |
|
| Power Supply | USB 5V/1A |
| Charging current | 500mA |
| Battery | 3.7V lithium battery(JST:2Pin 1.25mm) |
| Wi-Fi | |
| Standard | FCC/CE-RED/IC/TELEC/KCC/SRRC/NCC |
| Protocol | 802.11 b/g/n(802.11n，speed up to150Mbps)A-MPDU and A-MSDU polymerization，support 0.4μS Protection interval |
| Frequency range | 2.4GHz~2.5GHz(2400M~2483.5M) |
| Transmit Power | 22dBm |
| Communication distance | 300m |
|
Bluetooth |
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| Protocol | meet bluetooth v4.2BR/EDR and BLE standard |
| Radio frequency | with -97dBm sensitivity NZIF receiver Class-1,Class-2&Class-3 emitter AFH |
| Audio frequency | CVSD&SBC audio frequency |
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Software specification |
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| Wi-Fi Mode | Station/SoftAP/SoftAP+Station/P2P |
| Security mechanism | WPA/WPA2/WPA2-Enterprise/WPS |
| Encryption Type | AES/RSA/ECC/SHA |
| Firmware upgrade | UART download/OTA（Through network/host to download and write firmware） |
| Software Development | Support cloud server development /SDK for user firmware development |
| Networking protocol | IPv4、IPv6、SSL、TCP/UDP/HTTP/FTP/MQTT |
| User Configuration | AT + Instruction set, cloud server, android/iOSapp |
| OS | FreeRTOS |
More Information
3.J-LINK，keyboard can also be connected to the PC by J-LINK and USB interface
1.The interface is simplified, the four line: VCC, SWDIO, SWCLK, GND four interface, compared to JTAG, can save a variety of IO, high speed, download error search.
2.Fully compatible with the traditional J-Link, with all the functions of the J-Link.
3. With the Mirco usb interface (the smart phone with the type of data), general line.
4.3.3V output, also can give the target marine power supply, convenient debugging and download.
5.Onboard recovery fuse, avoid damage to the circuit board, safer.
6.Has a unique ID logo, several devices at the same time troubleshooting is not conflict.
7.With a transparent shrink tube, beautiful and intimate protection.
8.Stable work, no loss of the firmware.
9.The size of the 9, only u-disk, simple circuit, stable and reliable, convenient to move and carry
Shipping List
1. T-Watch Keyboard Option
1 X T-Watch Keyboard
1 x Charging Cable
2.Keyboard Option
1 X Keyboard
1 X AWM 20624 cable
1 X MAX30102 V1.3.1 Board
3. J-LINK Option
1 X J-LINK
