TTGO T-call Pinout Diagram
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$15 TTGO T-Call Board Combines ESP32 WiFi & Bluetooth SoC with SIM800 GPRS Module

LilyGo has launched several TTGO boards usually based on Espressif ESP8266 or ESP32 over the years. Here’s another that could be useful if 2G cellular networks have not sunset in your country: TTGO T-Call. The new board combines ESP32 WiFi & Bluetooth WiSoC with SIMCom SIM800L GPRS module, and also happens to rely on a USB-C port for power and programming instead of the more common micro USB port on this type of hardware. TTGO T-Call board (BLINK_V1.3) specifications: Wireless Module – ESP32-WROVER-B based on ESP32 dual core Xtensa processor @ 240MHz with 520kB SRAM on-chip, 4MB QSPI flash, 8MB PSRAM Connectivity – WiFi 4 802.11 b/g/n (2.4 GHz) up to 150 Mbps Bluetooth 4.2 Classic + LE Cellular  – 2G GSM/GPRS via SIMcom SIM800L module + Nano SIM card slot USB – 1x USB-C for power and programming (via CP2104) Expansion – 2x 21-pin headers with UART, SPI, SDIO, […]

TTGO T-Camera ESP32 OLED Display
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TTGO T-Camera ESP32 Camera Board Comes with OLED Display, Sensors

ESP32 is now being used for AI workloads such as face detection with camera boards like ESP32-CAM, or the upcoming ESP-EYE board from Espressif Systems themselves, combined with ESP-WHO face detection and recognition framework. The two aforementioned board require you to use a phone to vizualize the results, unless you blink some LEDs or connect your own display. But the just released TTGO T-Camera board includes a 128×64 OLED display which should allow you to display face detection and/or recognition results, as well as a BME280 environmental sensor, a PIR sensor, and an optional fisheye lens. TTGO T-Camera board specifications: ESP32-WROVER-B Wireless Module SoC –  ESP32 dual core Tensilica LX6 processor Memory – 8MB PSRAM Storage – 4MB SPI flash Connectivity – 2.4 GHz 802.11n WiFi 4, Bluetooth 4.2 LE Camera – 2MP OV2640 camera with normal or fisheye lens Display – 0.96″ 128×64 OLED display connected via SSD1306 I2C […]

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TTGO Micro-32 vs ESP32-WROOM-32
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TTGO Micro-32 is a Tiny ESP32-PICO-D4 Module

Unveiled almost a year ago, ESP32-PICO-D4 SiP (System-in-Package) combines ESP32 wireless processor, 4MB SPI Flash, a crystal oscillator, as well as some passive components, and allows more compact or thinner designs such as found in ESP32-PICO- Kit v4 development board. However, so far I had not seen any ESP32-PICO-D4 module, but TTGO Micro-32 fills the void as a compact module based on the SiP. TTGO Micro-32 module specifications: SiP – Espressif Systems ESP32-PICO-D4 based on ESP32 dual core processor + 4MB SPI flash Connectivity – Bluetooth 4.2 LE and 802.11 b/g/n WiFi up to 150 Mbps with chip antenna and u.FL (IPEX) connector Expansion – Castellated holes with GPIO, ADC, DAC, VP/VN, Touch, UART, I2C, and power signals Supply Voltage – 3.3V Dimensions – 19.2 x 13.3 mm (45% smaller than ESP32-WROOM-32) There’s no specific software for the module, since it should be software compatible with ESP-WROOM-32 (now called ESP32-WROOM-32). […]

TTGO-T-Beam
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Design ESP32 LoRa GPS Tracker Applications with TTGO T-Beam Board

TTGO introduced a small ESP32 LoRa board with OLED display last year that is still selling  for around $14 shipped. But the company is now back with a similar board called TTGO T-Beam that does without the display, but adds GPS support, and a 18650 battery holder, so it should be ideally suited for all sorts of LoRa GPS tracking applications. TTGO T-Beam board specifications: SoC – Espressif ESP32 dual core Xtensa LX6 processor with WiFi and Bluetooth Memory – PSRAM Storage – 4MB SPI flash Connectivity 802.11 b/g/n WiFi up to 150 Mbps +  Bluetooth 4.2 Classic and LE with “3D antenna” soldered on PCB LoRa 433, 868, and 915 MHz versions with SMA antenna Transmit current – 120 mA @ +20dBm; 90 mA @ +17dBm; 29mA @ +13dBm Receive sensitivity -139dBm with LoRa & 62.5Khz & SF=12 & 146bps -136dBm with LoRa & 125Khz & SF=12 & 293bps […]

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TTGO T5 is an ESP32 WiFi + Bluetooth Board with ePaper Display and Speaker

Lilygo has made another ESP32 board part of their TTGO family with TTGO T5 board powered by Espressif System ESP32 WiFI & Bluetooth SoC, and offering a choice of ePaper displays from 1.54″ to 2.9″, as well as built-in speaker. TTGO T5 board specifications: SoC – Espressif ESP32 dual core Tensilica LX6 processor with WiFi 802.11 b/g/n and Bluetooth 4.1 LE Storage – micro SD card slot Display (one of the other) 1.54″ 200×200 black & white ePaper display; Full refresh time – 2 seconds 2.13″ 250×122 black & white ePaper display; Full refresh time – 2 seconds 2.7″ 264×176 black & white ePaper display; Full refresh time – 6 seconds 2.9″ 296×128 black & white ePaper display; Full refresh time – 2 seconds Viewing angle – >170° Power Consumption – Refresh: 26.4mW(typ.); standby: <0.017mW Connected via SPI interface Audio – Mini Speaker Expansion – 24-pin header with GPIO, UART,  […]

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TTGO TAudio V1.0 is a $20 Audio Board with ESP32-WROVER Module

Espressif Systems may have recently unveiled their Audio Mic HDK suitable for all sort of audio applications including smart speakers, but if you need an ESP32 board that’s available now and don’t need a microphone array, TTGO TAudio V1.0 board may be an option. The board – also known as TTGO T9 – features an ESP32-WROVER WiFI + Bluetooth module, a Wolfson audio codec with a 3.5mm audio jack and built-in microphone, as well as an RGB LED array and a motion tracking sensor. TTGO T9 / TAudio V1.0 board hardware specifications: Wireless Module – ESP32-WROVER 802.11 b/g/n + Bluetooth 4.1 LE module with 4MB Flash, 4MB PSRAM External Storage – micro SD card slot Audio Cirrus Logic / Wolfson WM8978 stereo audio codec 3.5mm audio jack Microphone Sensor – InvenSense MPU9250 9-Axis (Gyro + Accelerometer + Compass) MEMS device Expansion 24-pin header with GPIOs, I2C, UART, VP/VN, speaker out, […]

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This TTGO Board Combines ESP32, LoRa Radio, and OLED Display for just $10

Just one year ago, it would cost around $15 to $20+ to get an ESP32 board, that is if you were lucky/fast enough to order one one before it went out of stock. Since then, availability is no longer an issue, and you now can get an ESP32 development board for as low as about $7, or even around $4 during promotions. Today, I was made aware of another board sold under the “TTGO” brand, that includes not only ESP32 WiFi and Bluetooth SoC, but also a (433 MHz) LoRa radio, and an OLED display. Price? Just $10 plus shipping ($1.75 here). TTGO ESP32/LoRa board specifications: WiSoC – Espressif ESP32 Storage – 32MB on-board flash (or maybe just 16MB?) LoRa Semtech SX1278 with u.FL connector + 433MHz antenna (N.B.: Antenna must be connected during use or the Semtech chip could be damaged) Sensitivity” ~ -148dBm; output power: +20dBm Display – […]

WeAct CAN485 Case Terminal Block
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WeAct CAN485 – A low-cost ESP32 board with CAN Bus and RS485 interfaces

WeAct CAN485 is a low-cost ESP32 board with CAN Bus and RS485 interfaces implemented through transceivers with 2.5kV isolation from Shanghai Chipanalog Microelectronics Co., Ltd. or Chipanalog for shorts. The board supports WiFi and Bluetooth LE through the ESP32 microcontroller and also features a microSD card slot, three switches for 120 Ohm termination and pull-up/pull-down resistors, Reset and User buttons, a USB-C port for programming, and a 2-pin terminal block taking 5 to 36V DC input power. WeAct CAN485 specifications: Wireless SoC – Espressif Systems ESP32-DOWD-V3 CPU – Dual-core processor @ 240MHz Memory – 520 KB SRAM, 16 KB SRAM in RTC Storage – 448 KB ROM Wireless – WiFi 4 and BLE connectivity Storage 8MB flash (W25Q64JVSSIQ) MicroSD card slot (SPI); note: the card needs to be removed when flashing the firmware. USB –  USB Type-C port for power and programming ( via CH343P USB to TTL bridge) Serial […]

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