2 layers69.8 × 52.7 mm
Stm32 lcd driver
sigma-prj/stm32-titan-lcd-driver-tm1621d-sample
Sample STM32 F030R8 NUCLEO board application to drive 7-Segments LCD using Titan TM1621D driver
15 partsCC0-1.0
2 layers51 × 43 mm
A replacement PCB board for common 4 digit 7 segment LCD kitchen timers.
- Size
- 51 × 43 mm
- Copper layers
- 2
- Thickness
- 4.69 mm
- Parts
- 25
- Nets
- 39
- Pads
- 108
- Tracks, vias
- 307, 48
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 17 Jan 2024
- Updated
- 20 Jan 2024
Overview
Egg timer is an open-source printed circuit board by MakersFunDuck, from the MakersFunDuck/Common-Kitchen-Timer-With-LCD-Replacement-Board repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 51 × 43 mm with 25 parts on 39 nets, routed with 307 tracks and 48 vias.
It is built around the ATTINY13A-SU, ESP-12E and TM1621D, with the AMS1117-3.3 among its other parts. Its parts include 5 resistors, 5 ICs, 5 connectors, 4 capacitors and 3 switches. It belongs with the lEDs and displays boards and the ESP8266 and AVR (ATmega, ATtiny) boards of this library.
Main components
4
ATTINY13A-SU
SOIC-8-208mil-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 6 64Byte 64Byte 8 Bit AVR Built-in FLASH SOIC-8-208mil Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
ESP-12E
SMD,24x16mm-20℃~+70℃ -90dBm 16dBm 170mA 2.4GHz 3V~3.6V 56mA 802.11b/g/n ESP8266 Chip On-board PCB Antenna Over-the-air (OTA) update UART、SPI、I2C SMD,24x16mm WiFi Modules ROHSAi-ThinkerWiFi Modules
TM1621D
SOIC-24-300mil-25℃~+75℃ 0.1uA 1/3,1/2 1/4,1/3,1/2 14 segments 14x4 bit 2.4V~5.2V 256kHz 3-Wire Serial Interface 60uA SOIC-24-300mil LCD Drivers ROHSTMLCD Drivers
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
README
README.mdCommon Kitchen Timer With an LCD-Replacement Board
A replacement PCB board for common 4 digit 7 segment LCD kitchen timers
It uses a cheap TM1621D LCD driver. You can solder either Attiny13A, or ESP12E module.
The "Print" function can print out supported letters on the screen. However it is not optimised for memory constains for Attiny13A.
Folder descriptions:
Datasheets: Where datasheets of the components are located (also translations from Chinese)
Fabrication files: Gerber files. You can just upload those to any PCB manufacturer website to get your PCB.
Firmware: Code examples which is written using Arduino framework.
KiCAD files: KiCAD schematics and PCB files
Schematics and Layout files: PDF files for the PCB and Schematics.
If you want to use another LCD, or make your own PCB designs, I explained them in a video if you are interested. https://youtu.be/JNZbfLtlbZA
Parts
25| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | Conn_01x01 | Connector_PinHeader_2.00mm:PinHeader_1x01_P2.00mm_Vertical | J2, J3, J4, J5 |
| 3 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R4 |
| 3 | SW_Push | lcd:contact pad | SW1, SW2, SW3 |
| 2 | 100nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2, C4 |
| 2 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C3 |
| 1 | 0Ω | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5 |
| 1 | 1K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U4 |
| 1 | ATtiny13A-S | Package_SO:SOIC-8W_5.3x5.3mm_P1.27mm | U5 |
| 1 | Buzzer | Buzzer_Beeper:Buzzer_12x9.5RM7.6 | BZ1 |
| 1 | Conn_01x05 | Connector_PinHeader_2.00mm:PinHeader_1x05_P2.00mm_Vertical | J1 |
| 1 | ESP-12E | RF_Module:ESP-12E | U1 |
| 1 | LOGO | lcd:duck | G*** |
| 1 | R_Potentiometer | Potentiometer_THT:Potentiometer_Runtron_RM-065_Vertical | RV1 |
| 1 | TM1621D | Package_SO:SOIC-24W_7.5x15.4mm_P1.27mm | U2 |
| 1 | bare-lcd | lcd:bare-lcd-footprint12 | U3 |
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Questions
How big is the Egg timer PCB?
It measures 51 × 43 mm and has 2 copper layers, 4.69 mm thick.
What parts does the Egg timer use?
25 parts, built around the ATTINY13A-SU, ESP-12E, TM1621D and AMS1117-3.3. 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 Egg timer KiCad files?
From the MakersFunDuck/Common-Kitchen-Timer-With-LCD-Replacement-Board repository on GitHub, at the commit this page was made from: the board is KiCAD files/egg-timer.kicad_pcb and its schematic KiCAD files/egg-timer.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Egg timer design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).