The Smallest TTL Programmer is a miniature USB-to-UART TTL serial converter designed for space-constrained electronics projects. Dual 3.3V / 5V TTL logic level support · Standard UART output (V_CC, GND, TXD, RXD, DTR) · Integrated fuse to guard host USB ports.
The Smallest TTL Programmer is a miniature USB-to-UART TTL serial converter designed for space-constrained electronics projects. Built around a high-efficiency USB-to-serial bridge IC, this module provides an ultra-small footprint without sacrificing reliable data transmission or programming capabilities.
Despite its micro size, the board supports selectable 3.3V and 5V logic levels, making it fully compatible with power-sensitive wireless modules as well as standard microcontrollers. Onboard status LEDs supply real-time visual feedback for power and active serial data transmission (TX/RX).
This ultra-miniature programmer is ideal for embedding directly inside custom project enclosures, handheld diagnostic tools, wearable hardware, and compact IoT nodes. It features standard 2.54mm pitch solder pads/headers (V_CC, GND, TXD, RXD, DTR) for simple jumper wiring and seamless integration with Arduino, ESP8266, ESP32, STM32, and custom printed circuit boards (PCBs).
| Core USB-UART IC | Ultra-compact USB-to-Serial TTL Bridge IC |
|---|---|
| Miniature Form Factor | Exceptionally small PCB footprint for micro enclosures |
| Voltage Compatibility | Dual 3.3V / 5V TTL logic level support |
| Communication Interface | Standard UART output (V_CC, GND, TXD, RXD, DTR) |
| Auto-Reset Control | Integrated DTR line support for direct microcontroller flashing |
| Status Indicators | Onboard LEDs for Power (PWR), Transmit (TXD), and Receive (RXD) |
| Built-in Over-current Protection | Integrated fuse to guard host USB ports |
What is the operating voltage?
Dual 3.3V / 5V TTL logic level support.
Which interface does it use?
Standard UART output (V_CC, GND, TXD, RXD, DTR).
Is it compatible with Arduino and ESP32?
Yes. It works with Arduino, ESP32, ESP8266, STM32 projects.
Can I buy the Smallest TTL Programmer in Kanpur?
Yes – buy online with delivery across India, or pick it up from the iTechBuilders store, Damodar Nagar, Kanpur.
