Hw-044 Datasheet | |verified|

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The is a compact RS232-to-TTL serial port converter module built around the MAX3232 integrated circuit . This module is an essential tool for projects that require communication between a computer (RS232 levels) and a microcontroller (TTL levels), such as an Arduino or ESP32. Technical Specifications

ESD protection up to ±15 kV for the RS-232 bus terminal. Pin Configuration & Layout

The HW-044 splits its connections into two distinct sections: the low-voltage (typically a 4-pin or 6-pin header arrangement) and the high-voltage RS232 Serial side (the DB9 female port). 1. The TTL Side (Microcontroller Interface) hw-044 datasheet

| GAIN Connection | Gain (dB) | Output Level (max) | |----------------|-----------|--------------------| | Float (default) | 9 dB | ~1.4x input | | VDD (VIN) | 12 dB | ~2.0x input | | GND | 15 dB | ~2.8x input | | Not available* | 18 dB * | Not on HW-044 |

// Now, echo the character back to the HW-044 mySerial.print(c);

Typically indicates that no battery is connected to the terminals, or the battery is deeply discharged/damaged. Customizing Charge Current ( RPROGcap R sub cap P cap R cap O cap G end-sub

: Allowing modern DIY projects to communicate with vintage computers through a standard COM port. Implementation Tips This public link is valid for 7 days

Connect an RS232 device, like a spectrometer or a cash register, to an STM32 with an SD card. The HW-044 will convert the RS232 data to TTL for the STM32 to read and log.

Flashing routers, set-top boxes, and satellite receivers.

While these two modules are the most common interpretations of "HW-044," it's worth noting that the product code may also be used for generic breakout boards, such as one for the TLE6251DS CAN transceiver.

120 kbps (Guaranteed), works seamlessly with standard 115200 bps configurations Can’t copy the link right now

// Send to motor driver (analogWrite for PWM) // ... motor control logic ...

Based on the analysis of the HW-044 datasheet, the following recommendations are made:

Approx. 32 mm x 28 mm (Excluding the overhanging DB9 connector footprint) Pinout Configuration and Interface Description