Product Documentation Using GPS – ESP32 Gateway with Simcom Modem Using the built-in GPS, ESP32 Gateway can obtain a fix on its current location and also acquire current time. This makes IoT asset tracking easier. Continue Reading 0 comment 0 FacebookTwitterPinterestEmail
News ESP32 4G Gateway Gen.1 Design – Prototype and Testing News and Updates on the ESP32 4G Gateway Gen.1 which features a 4G LTE modem, ethernet, RS485 and solar power with a battery charger. Continue Reading 0 comment 0 FacebookTwitterPinterestEmail
ESP32 4G Gateway (Gen 1) esp_modem_dte_send_cmd: process command timeout – SOLVED ESP32 PPPoS modem “esp_modem_dte_send_cmd(): process command timeout” error, causes, and some solutions that work with SIM7600 and A7670. Continue Reading 0 comment 0 FacebookTwitterPinterestEmail
Embedded Using Multiple SIM Cards with Cellular Modems (SIMCom, Quectel, etc) Using multiple SIM cards with SIMCom or Quectel modems is easy using multiplexers and a basic logic controller. Modems must support hot swap. Continue Reading 0 comment 0 FacebookTwitterPinterestEmail
Embedded “ERROR: SIM Failure” in Simcom 4G LTE Modems – Solutions I list some cases with using SIM commands like AT+CIMI which result in “ERROR: SIM failure”. Common problems are listed along with solutions. Continue Reading 0 comment 0 FacebookTwitterPinterestEmail