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    • U

      T-RSC3 Serial Ports
      • utr_brk

      1
      0
      Votes
      1
      Posts
      119
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      No one has replied

    • T

      Mini E-Paper Core module stl
      • thebozenator

      1
      0
      Votes
      1
      Posts
      91
      Views

      No one has replied

    • L

      CAN Transceiver Support
      • luki743

      4
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      4
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      373
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      teastain2

      @luki743 LilyGO T-Display S3, easy;
      T-Embed not so much.
      The T-Embed repository is here:
      https://github.com/Xinyuan-LilyGO/T-Embed
      You only need one GPIO and gnd if the sn65hvd230 is powered by the other device.
      CAN takes a single digital output (GPIO) from the ESP and converts it to "differential" + signal, - signal.
      The "Grove" connector maybe configured as CAN and maybe a few spare GPIO on that unpopulated development pad on the lower left of the image.

      -Terry

    • E

      T-OI Plus ESP32-C3 Ver 1.3
      • etolocka

      2
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      Votes
      2
      Posts
      171
      Views

      teastain2

      @etolocka Yes, it does. It's the red component marked C3, which is a compact "ceramic antenna" shown in the upper right image.
      https://www.lilygo.cc/en-ca/products/t-oi-plus?variant=42306652111029

      refer to the schematic page 1 upper left:
      https://github.com/Xinyuan-LilyGO/LilyGo-T-OI-PLUS/blob/main/schematic/T-OI_PLUS_Schematic.pdf

      Aliexpess:
      https://www.aliexpress.com/i/3256801896137015.html?gatewayAdapt=4itemAdapt

    • H

      LILYGO T-SIM7600G-H R2
      • herovi

      1
      0
      Votes
      1
      Posts
      165
      Views

      No one has replied

    • N

      LoRa32 V2.1_1.6
      • NorthernMan54

      1
      0
      Votes
      1
      Posts
      285
      Views

      No one has replied

    • M

      LILYGO® T-Internet-POE - FCC Certification
      • mikej

      1
      0
      Votes
      1
      Posts
      189
      Views

      No one has replied

    • G

      Off-Grid Controls
      • GUSTAVLILYGO

      1
      0
      Votes
      1
      Posts
      155
      Views

      No one has replied

    • J

      water pump with T-Higrow
      • jcorbella

      2
      0
      Votes
      2
      Posts
      224
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      teastain

      @jcorbella You will need:

      a separate power supply rated for the pump a small relay or mosfet to switch the pump to help isolate the pump motor from the ESP32 circuitry all grounds connected to a "common" no power interconnections, I.e. power isolated between LilyGO and pump power supply
    • V

      Anyone use an external antenna on T3
      • VintageSlots

      1
      0
      Votes
      1
      Posts
      225
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      No one has replied

    • B

      How to remove the T-QT screen?
      • bhuzyk

      2
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      Votes
      2
      Posts
      255
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      M

      You can heat it with a hair dryer to melt the glue a bit. This allows easy removal of the screen structure without damage.

    • S

      ESP32-S3 TFT 1.9 display
      • simpleuser

      16
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      16
      Posts
      2360
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      S

      @teastain Thank you! this is insightful. Really appreciated. i'd have to look into it when i have the time... perhaps the type of battery? i don't know. but at this point.. USB-C it is.. hahahah

    • J

      TTGO T-SIM A7670E Power Supply Voltage
      • JJPUys

      3
      0
      Votes
      3
      Posts
      383
      Views

      teastain

      Hi! This site is mostly user supported, I am a user.
      China was on holidays last week, so they may be "catching up"
      This email sales@lilygo.cc got an immediate response and they were sincerely interested and helpful.

      -Terry

    • S

      LILYGO® TTGO T-Call V1.3 ESP32
      • smartthings

      1
      0
      Votes
      1
      Posts
      208
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      No one has replied

    • R

      ePaper display manufacturer for TTGO T5 V2.2 ESP32 2.9"
      • rrainey

      1
      0
      Votes
      1
      Posts
      149
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      No one has replied

    • R

      Which GPIO free pins does TTGO T4 V1.3 have?
      gpio t4 • • Rodrigo

      1
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      254
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    • F

      T-PicoC3 communication between processors
      • forest

      2
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      219
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      W

      Here are some fragments from my code (which does not do anything useful yet, but does communicate with the ESP-32 to send its first command). I hope it is helpful.

      Header file lilygo_tpicoc3.h

      // Link to the ESPC3-C3 processor on the same board #define TPICOC3_ESP32C3_UART 1 #define TPICOC3_ESP32C3_TX_PIN 8 #define TPICOC3_ESP32C3_RX_PIN 9 #define TPICOC3_ESP32C3_CTS_PIN 10 #define TPICOC3_ESP32C3_RTS_PIN 11

      Set up RP2040 UART to communicate

      uart = uart_get_instance(TPICOC3_ESP32C3_UART); // The ESP32-C3 hardware can run its UARTs at up to 5 Mbaud uart_init(uart, 115200); // Default for ESP-AT's hardware reset (?) gpio_set_function(TPICOC3_ESP32C3_TX_PIN, GPIO_FUNC_UART); gpio_set_function(TPICOC3_ESP32C3_RX_PIN, GPIO_FUNC_UART); gpio_set_function(TPICOC3_ESP32C3_CTS_PIN, GPIO_FUNC_UART); gpio_set_function(TPICOC3_ESP32C3_RTS_PIN, GPIO_FUNC_UART); uart_set_hw_flow(uart, true, true); // Use CTS and RTS uart_set_format(uart,8,1,UART_PARITY_NONE);

      From the communication code. Must wait a short time (120 ms for the screen to wake up is enough for the ESP-32 as well).

      // Send command: starts with AT and must end with \r\n uart_puts(uart, "AT\r\n"); // Most commands are AT+...\r\n

      Multi-line reply, ends with a full line OK\r\n or ERROR\r\n

    • B

      TTGO T4 V1.3
      • BBTM

      1
      0
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      1
      Posts
      186
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      No one has replied

    • C

      T-OI plus ESP32-C3 Deep Sleep
      • ckuehnel

      3
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      Votes
      3
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      466
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      C

      @lewis Here are my results of current consumption w/o red LED. The blog post is in German but Google helps. 😉

      https://ckarduino.wordpress.com/2022/05/16/lilygo-t-oi-plus-risc-v-esp32-c3/

      The device works much longer now. It is a good idea to make the LED switchable in a redesign.

    • A

      LilyGo-T-Call-SIM800
      • Ak

      2
      0
      Votes
      2
      Posts
      251
      Views

      L

      @ak Around 800uA

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