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With the new T-Display project I included the I2C connector as well. The order does not match several OLED displays, but the ZS-042 rtc clock, the 1602 display adapter and many more.
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But instead of SMD 1.0 mm connector I just use the regular 2.54mm raster with XH connector on the board and respective 4 pin connector wire.įollowing the same order the pins are assigned: The pin on the T-Display is 34 (channel ADC1_CH6) with a 1:2 battery voltage divider.įollowing the inspiration of SparkFun with their QWIIC connector I tried to replicate the pin order. This can be seen in the provided schematics from TTGO for the T-Display: You can directly measure the voltage of the LiPo battery on Pin 34. With a battery of 1000 mAh you can use it for 9 hours.įurther measurement has been conducted in November 2020. The pins are: PINĪs measured in April 2020 the board needs 68 mA for running. This makes this board suitable for a variety of measurement applications. Many pins of the ESP32 that are related to the ADC converter are exposed on the T-Display. You might have to press STOP once and then will be greeted with Here you select MicroPython (ESP32) and the correct Port or WebREPL Silicon Labs CP210x USB to UART Bridge (COM6). After opening Thonny change the settings to Tools > Options... > Interpreter.
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MicroPython should now be running on your T-Display.
#CP210X USB TO UART BRIDGE 3.3 WINDOWS#
You can do this by right-click on the Windows symbol > Device Manager > ports (COM & LPT) and there you’ll find Silicon Labs CP210x USB to UART Bridge (COM6). Thonny 3.3.0 for Windos, other operation systemsĬonnect your T-Display to a USB port of your computer and determine the port.
#CP210X USB TO UART BRIDGE 3.3 DRIVER#
firmware.bin micropython v1.12 with ST7789V driver library.I downloaded the most recent in November 2020 and put them in the first v0.1 release. You need 2 programs and 1 file to get started with MicroPython on the T-Display. Installation of MicroPython Simplified Installation You need the following 5 steps to be able to program your T-Display with your Laptop/PC. Installation and power measurements are found at the bottom of this document. I will probably connect a diode from the AVR Vdd to the /RST on the CP210X, so that the CP210X is held in reset until the AVR is powered.Projects with the TTGO T-Display | t-display t-display ESP32 with display in Python and C View on GitHub Projects with the TTGO T-Display I intend to experiment by using resistors in the TXD and RXD lines so that I can monitor current drawn. If the CP210x receives more than -0.3 V as its power source, the CP210x will be damaged. When interfacing the CP210x with the MCU, you will have to verify that the CP210x will never receive a negative power source. We cannot say how the MCU will react to driven logic highs on the CP210x pins, however you will have to consult the datasheet for the MCU. Thus, these pins will not source enough current for the MCU to attempt to power itself. If the reverse is true, the CP210x can be held in reset, which will cause all of the UART pins to be open drain and float high with the weak pull-ups. The MCU will effectively see the CP210x pins as open circuits. If the MCU is on and the CP210x is off, then the CP210x will not attempt to power itself from any UART lines that are logic high and draw a lot of current from the MCU. In this case, both of the instances you've described below can occur: the MCU is powered when the CP210x is not, or the CP210x is powered when the MCU is off. However, it is not always possible to power both the CP210x and the other device from the same source (if you want to use the microcontroller for something other than USB, for example). If both chips are bus powered, we recommend gating the power for the other device with SUSPEND or /SUSPEND, so the device is not drawing power from the bus when the CP210x is not enumerated. In other words, both parts should be powered either from the USB bus or from the "self-powered" configuration. Quote: In most cases, we recommend powering both the CP210x and the device it's interfacing with from the same power source. : Silicon Labs CP210x USB to UART Br > Silicon Labs CP210x USB to UART Bridge 6.7.3.