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")
```
2.1 KiB
| layout | board_id | title | name | manufacturer | board_url | board_image | date_added | family | downloads_display | features | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| download | 01space_lcd042_esp32c3 | ESP32-C3-0.42LCD Download | ESP32-C3-0.42LCD | 01space |
|
01space_lcd042_esp32c3.jpg | 2023-05-04 | esp32c3 | true |
|
The ESP32-C3-0.42LCD is an ESP32 C3 / RP2040 Raspberry Pi Pico Development board with 0.42 inch LCD risc-v WiFi Bluetooth.
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.
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.
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.
Specifications
- Based ESP32-C3FH4 WIFI & Bluetooth LE RISC-V Single-Core CPU
- Type-C USB
- 4MB Flash
- 11x IO
- 1x1.0-4P connector(GND,3V3,SDA(GPIO5),SCL(GPIO6))
- 1x RGB(GPIO2)
- 1xLED(3.3V Power Supply)
- 1xReset button(CHIP_EN,great for restarting your program or entering the ROM bootloader)
- 1xBoot button(GPIO9,entering the ROM bootloader or for user input)
- 3.3V Regulator with 500mA peak output
- Ceramic Antenna