2 layers94.1 × 63.5 mm
GarageOpener
AshiqAshref/Garage-Door-Opener
Universal Garage Door using BLE (Bluetooth Low Power) running on ESP32 with highest security possible.
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Universal Programmer
TiebeDeclercq/Uart-programmerA versatile UART programming board designed for microcontroller development with flexible voltage selection and multiple connection options. Features built-in status LEDs, CH340C USB-to-serial conversion, and support for external programming fixtures.
- Size
- 126.2 × 25.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 46
- Nets
- 26
- Pads
- 121
- Tracks, vias
- 259, 36
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 17 Jun 2025
- Updated
- 16 Aug 2025
Overview
Universal Programmer is an open-source printed circuit board by TiebeDeclercq, from the TiebeDeclercq/Uart-programmer repository on GitHub, published under the MIT licence. It is a 2-layer board of 126.2 × 25.5 mm with 46 parts on 26 nets, routed with 259 tracks and 36 vias.
It is built around the CH340C, AMS1117-3.3 and LESD5D5.0CT1G, with the MMBT3904 and 1N5819HW-7-F-01 among its other parts. Its parts include 15 connectors, 7 diodes, 6 capacitors, 5 resistors and 2 ICs. It belongs with the interfaces and adapters boards of this library.
Main components
5
CH340C
SOP-16-20℃~+70℃ 2Mbps 3.3V、5V 50uA 7mA Transceiver USB 2.0 SOP-16 USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB Converters
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
LESD5D5.0CT1G
SOD-523-55℃~+150℃ 100W 12pF 16V 1uA 5V 7A 7V Bidirectional ESD IEC 61000-4-2 SOD-523 ESD and Surge Protection (TVS/ESD) ROHSGOODWORKUncategorised
MMBT3904
SOT-23-55℃~+150℃ 1 NPN 100 100nA 200mA 200mW 300MHz 300mV 40V 6V NPN SOT-23 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)
1N5819HW-7-F-01
SOD-123Schottky DiodesDiodes Incorporated
README
README.mdCustom UART Programmer
A versatile UART programming board designed for microcontroller development with flexible voltage selection and multiple connection options. Features built-in status LEDs, CH340C USB-to-serial conversion, and support for external programming fixtures.
Hardware Overview
- USB-to-Serial IC: CH340C for reliable USB communication
- Voltage Selection: Jumper-selectable 3.3V or 5V operation
- Status Indicators:
- Power LED (PWR)
- TX/RX activity LEDs
- Connection Options:
- Standard pin headers for jumper wire connections
- FCP slot for external fixtures
- Interface: Standard UART (TX, RX, VCC, GND, BOOT, EN)
- Power Supply: USB-powered with onboard voltage regulation
Schematic
Getting Started
-
Driver Installation
- Install CH340 drivers for your operating system
- Windows: Download from manufacturer or use Windows Update
- macOS/Linux: Usually plug-and-play
-
Voltage Selection
- Set jumper to 3.3V for ESP32, ESP8266, and other 3.3V microcontrollers
- Set jumper to 5V for Arduino and 5V-compatible devices
-
Connection Methods
Method A: Direct Jumper Connections
- Connect VCC to target microcontroller's power pin
- Connect GND to target ground
- Connect TX to target RX pin
- Connect RX to target TX pin
- Use BOOT and EN pins for programming mode control (ESP32/ESP8266)
Method B: External Programming Fixture
- Insert compatible pogo pin module into FCP slot
- Align fixture with target board
- Programming connections are made automatically
-
Programming
- Open your preferred serial terminal or IDE
- Select the correct COM port
- Set appropriate baud rate (typically 115200)
- Put target microcontroller in programming mode
- Upload firmware
-
Status Monitoring
- PWR LED indicates power is applied
- TX LED flashes during data transmission
- RX LED flashes during data reception
More Projects: Visit dectronics.cc for additional electronics projects
Parts
46| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | Conn_01x01_Pin | Pogo-Pin 3.5mm:HARWIN_P70-1000045R | J5, J6, J7, J8, J9, J10, J11, J12, J13, J14 |
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2 | H1, H2, H3, H4 |
| 3 | LED | LED_SMD:LED_0805_2012Metric | D1, D2, D3 |
| 3 | LESD5D5.0CT1G | LESD5D5.0CT1G:TVS_LESD5D5.0CT1G | D5, D6, D7 |
| 3 | LOGO | Drawings_Customs:Dectronics_Sub_12mm | G***, G***, G*** |
| 2 | 0.1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4, C6 |
| 2 | 100nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2 |
| 2 | 10kΩ | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2 |
| 2 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C5 |
| 2 | 1k | Resistor_SMD:R_0805_2012Metric | R4, R5 |
| 2 | Conn_01x06_MountingPin | Connector_FFC-FPC:TE_84953-6_1x06-1MP_P1.0mm_Horizontal | J3, J4 |
| 2 | MMBT3904 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 1 | 1N5819HW-7-F | 1N5819HW-7-F:SOD3715X145N | D4 |
| 1 | 750 | Resistor_SMD:R_0805_2012Metric | R3 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | CH340C | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U1 |
| 1 | Conn_01x06_Pin | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Horizontal | J2 |
| 1 | Conn_02x05_Odd_Even | Connector_IDC:IDC-Header_2x05_P2.54mm_Vertical | J19 |
| 1 | Fuse_Small | Fuse:Fuse_0805_2012Metric | F1 |
| 1 | Jumper_3_Open | test:VoltageJumper | JP1 |
| 1 | USB_A | Connector_USB:USB_A_CNCTech_1001-011-01101_Horizontal | J1 |
Questions
How big is the Universal Programmer PCB?
It measures 126.2 × 25.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Universal Programmer use?
46 parts, built around the CH340C, AMS1117-3.3, LESD5D5.0CT1G and MMBT3904. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Universal Programmer KiCad files?
From the TiebeDeclercq/Uart-programmer repository on GitHub, at the commit this page was made from: the board is Universal-Programmer/Universal-Programmer.kicad_pcb and its schematic Universal-Programmer/Universal-Programmer.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Universal Programmer design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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