Jeff Epler
4715875cc4
.. leading zeros are required for `frontmatter` to treat them as dates
rather than strings, apparently per the YAML specification.
This was done by script:
```py
import re
import datetime
import pathlib
import sys
import frontmatter
rx = re.compile(r'^(\s*)date_added:.*$', re.M)
for path_str in sys.argv[1:]:
print(path_str)
path = pathlib.Path(path_str)
post = frontmatter.load(path)
date_added = post.get("date_added", "")
if isinstance(date_added, datetime.date):
continue
if isinstance(date_added, str):
try:
date_added = datetime.datetime.strptime(date_added, "%Y-%m-%d")
except ValueError as exc:
print(f"Failed to parse date {date_added} in {path_str}: {exc}")
continue
date_added = date_added.date()
content = path.read_text("utf-8")
new_content = rx.sub(lambda m: f"{m.group(1)}date_added: {date_added}", content)
assert content != new_content
path.write_text(new_content, "utf-8")
```
44 lines
2.1 KiB
Markdown
44 lines
2.1 KiB
Markdown
---
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layout: download
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board_id: "01space_lcd042_esp32c3"
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title: "ESP32-C3-0.42LCD Download"
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name: "ESP32-C3-0.42LCD"
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manufacturer: "01space"
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board_url:
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- "https://github.com/01Space/ESP32-C3-0.42LCD"
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board_image: "01space_lcd042_esp32c3.jpg"
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date_added: 2023-05-04
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family: esp32c3
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downloads_display: true
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features:
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- STEMMA QT/QWIIC
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- USB-C
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- Breadboard-Friendly
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- Wi-Fi
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- Display
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---
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The ESP32-C3-0.42LCD is an ESP32 C3 / RP2040 Raspberry Pi Pico Development board with 0.42 inch LCD risc-v WiFi Bluetooth.
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ESP32-C3 is a low-cost microcontroller from Espressif that supports 2.4 GHz Wi-Fi and Bluetooth® Low Energy ( Bluetooth 5 (LE)).Use RISC V as the core. There's a minimum number of pins on this chip, it's specifically designed to be low cost and for simpler projects than ESP32-Sx or ESP32 classics with their large number of GPIO. Think of it more as an intended replacement to the ESP8266 than to the ESP32! It has built-inUSB-to-Serial, but not native USB - it cannot act as a keyboard or disk drive. The chip used here has 4MB of Flash memory, 400 KB of SRAM.
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The ESP32-C3 integrates a rich set of peripherals, ranging from UART, I2C, I2S, remote control peripheral, LED PWM controller, general DMA controller, TWAI controller, USB Serial/JTAG controller, temperature sensor, and ADC. It also includes SPI, Dual SPI, and Quad SPI interfaces. There is no DAC or native capacitive touch.
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With its state-of-the-art power and RF performance, this SoC is an ideal choice for a wide variety of application scenarios relating to the Internet of Things (IoT), wearable electronics, and smart homes.
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**Specifications**
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- Based ESP32-C3FH4 WIFI & Bluetooth LE RISC-V Single-Core CPU
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- Type-C USB
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- 4MB Flash
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- 11x IO
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- 1x1.0-4P connector(GND,3V3,SDA(GPIO5),SCL(GPIO6))
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- 1x RGB(GPIO2)
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- 1xLED(3.3V Power Supply)
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- 1xReset button(CHIP_EN,great for restarting your program or entering the ROM bootloader)
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- 1xBoot button(GPIO9,entering the ROM bootloader or for user input)
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- 3.3V Regulator with 500mA peak output
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- Ceramic Antenna
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## Purchase
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* [Aliexpress](https://www.aliexpress.us/item/3256804679132291.html)
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