Description
Product upgrade part: 1. The pin GPIO34 is replaced with GPIO152. Replace the charging IC (TP5400) with the power management AXP1923. Replace TX and RX pins of GPS4. The power switch is removed and replaced with a key switch5. Minimize sleep current6. GPS battery replacementProduct Features: ESP32ESP32 new version: REV1wireless onlineBluetooth4MB flash3D antennaLORATP54001A battery managementLED indicatorUSBPre-flashed firmware: -SoftRF V4.0Digital RSSI functionAutomatic frequency correctionAutomatic gain controlRF wake-up functionLow voltage detection and temperature sensorFast wake-up and frequency hoppingHighly configurable packet handlerGlobal Positioning SystemGPS module NEO-6M, universal 3V-5V power supplySpecified module with ceramic antenna, super strong signalSave configuration parameter data EEPROM DownWith data backup batteryWith LED signal indicatorDefault baud rate: 9600 Description: Working voltage: 1.8 ~ 3.7vAcceptable current: 10 ~ 14mATransmitting current: 120mA @ + 20dBm, 90mA @ + 17dBm, 29mA @ + 13dBmWorking frequency: 433 / 470MHz (433HMz version) / 868M / 915M (868MHz version)Transmitting power: + 20dBmReceiving sensitivity:-139dBm @ LoRa and 62.5Khz & SF = 12 and 146bps-136dBm @ LoRa and 125Khz & SF = 12 & 293bps-118dBm @ LoRa & 125Khz & SF = 6 & 9380bps-123dBm@FSK&5Khz&1.2KbpsFrequency error: +/- 15KHzFIFO space: 64ByteData rate: 1.2K ~ 300Kbps @ FSK, 0.018K~37.5Kbps@LoRaModulation mode: FSK, GFSK, MSK, GMSK, LoRa TM, OOKInterface form: SPISleep current: 0.2uA@SLEEP, 1.5uA@IDLEWorking temperature: -40 ?-+ 85 ?
Package includes:
1 x TTGO T-Beam ESP32 LoRa development board with 18650 battery holder1 x antenna2 x header
