2 layers65 × 56.5 mm
Ltp kikad
ADDTDR/Pitanga
Prototype 0.01 | Pitanga V1 | Pitanga V2.1a :-------------------------:|:-------------------------:|:-------------------------: | |
54 parts4MIT
2 layers125 × 70 mm
LTP305 ESP32 CLOCK
BasementCircuits/BulletTime4ESP32 based clock using LTP305 led matrices
- Size
- 125 × 70 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 65
- Nets
- 131
- Pads
- 351
- Tracks, vias
- 919, 132
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 21 Mar 2021
- Updated
- 30 Apr 2021
Overview
LTP305 ESP32 CLOCK is an open-source printed circuit board by BasementCircuits, from the BasementCircuits/BulletTime repository on GitHub, published under the MIT licence. It is a 2-layer board of 125 × 70 mm with 65 parts on 131 nets, routed with 919 tracks and 132 vias.
It is built around the CP2102N-A01-GQFN24, ESP32-WROOM-32D and HT16K33-28SOP, with the LM1117-3.3, PCA9306DP and LTP-305G among its other parts. Its parts include 22 resistors, 11 capacitors, 8 diodes, 6 ICs and 2 transistors. It belongs with the lEDs and displays boards and the ESP32 boards of this library.
Main components
9
CP2102N-A01-GQFN24
QFN-24-EP(4x4)3Mbps 3V~3.6V Transceiver QFN-24-EP(4x4) USB Converters ROHSSilicon LabsUSB Converters
ESP32-WROOM-32D
-- WiFi Modules ROHSEspressif SystemsWiFi Modules
HT16K33-28SOP
SOP-28SOP-28 New Arrivals ROHSHoltek SemiconUncategorised
LM1117-3.3
SOT-2231 1.3V@(1000mA) 15V 1A 2mA 3.3V Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHShongjiachengUncategorised
PCA9306DP
TSSOP-8-40℃~+85℃ 1 1.8V~5.5V 1V~3.6V 2 2Mbps Automatic direction detection、Output enable high-impedance Bidirectional Level translator Open-drain SMBus、I2C TSSOP-8 Translators, Level Shifters ROHSNXP SemiconductorsTranslators, Level Shifters
LTP-305G
THroughholeTHroughhole New Arrivals ROHSLite-OnUncategorised
MMSS8050-L-TP
SOT-23-55℃~+150℃ 1 NPN 1.5A 100MHz 100nA 120 25V 300mW 500mV 5V NPN SOT-23 Bipolar (BJT) ROHSMicro Commercial ComponentsBipolar (BJT)
DX07S016JA1R1500
SMD-40℃~+85℃ 1 250mA、1.25A 48V Black Female Type-C USB 2.0 SMD USB Connectors ROHSJAE ElectronicsUSB Connectors
SP0503BAHTG
SOT-143-55℃~+125℃ 10A@8/20us 14V 150W@8/20us 30pF、60pF 5.5V 6V 80nA ESD IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 Three channels Unidirectional SOT-143 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)
README
README.md
BulletTime
ESP32 based clock using LTP-305 led matrices.
- NTP time retrieval
- Brightness control
- esp-idf
- USB-CSchematic
WIP
PCB
WIP
Acrylic cover
WIP
Software
Running esp-idf with esp32-wifi-manager 3.3.1 by tonyp7 for setting wifi credentials during runtime. Time set using sntp time example from esp-idf repository. Brightness control using button interrupts.
Flashing
- Install esp-idf extension from Visual Studio Code marketplace
- Open LTP_clock folder from VSCode
- Select port, compile & flash.BOM
| Component | Quantity | Description |
|---|---|---|
| ESP32-WROOM-32D | 1x | ESP32 |
| CP2102N-A02-GQFN24 | 1x | USB-UART |
| HT16K33 | 2x | LED driver |
| LDL1117 | 1x | Voltage regulator |
| SP0503BAHTG | 1x | ESD-protection |
| LTP-305 | 6x | 5x7 led matrix |
| PCA9306 | 1x | I2C level shifter |
| 5.2x5.2mm SMD pushbutton | 4x | Pushbutton |
| 14 Position DIP socket | 6x | |
| Resistors (WIP) | ||
| Capacitors (WIP) |
Parts
65| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 10k | Resistor_SMD:R_0603_1608Metric | R8, R9, R15, R16, R22, R23 |
| 6 | LTP-305G | SamacSys_Parts:DIPS762W50P254L1850H400Q14N | DS1, DS2, DS3, DS4, DS5, DS6 |
| 5 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C3, C4, C5, C7, C9 |
| 4 | LED | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D5, D6, D7, D8 |
| 4 | SW_Push | Button_Switch_SMD:SW_SPST_SKQG_WithStem | -, +, FLASH, RST/SYNC |
| 3 | 22uF | Capacitor_SMD:C_0603_1608Metric | C1, C2, C8 |
| 2 | 0R | Resistor_SMD:R_0603_1608Metric | R20, R21 |
| 2 | 10uF | Capacitor_SMD:C_0603_1608Metric | C10, C11 |
| 2 | 5k1 | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | HT16K33-28SOP | SamacSys_Parts:SOIC127P1031X264-28N | IC1, IC2 |
| 2 | MMSS8050-L-TP | SamacSys_Parts:SOT96P237X122-3N | Q1, Q2 |
| 2 | R_g | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5, R6 |
| 2 | i2c | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R14, R17 |
| 2 | i2c | Resistor_SMD:R_0603_1608Metric | R10, R11 |
| 1 | 1N4148 | Diode_SMD:D_SOD-123 | D3 |
| 1 | 1k | Resistor_SMD:R_0603_1608Metric | R18 |
| 1 | 200k | Resistor_SMD:R_0603_1608Metric | R12 |
| 1 | 22.1k | Resistor_SMD:R_0603_1608Metric | R7 |
| 1 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C6 |
| 1 | 47.5k | Resistor_SMD:R_0603_1608Metric | R13 |
| 1 | 47k | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 560R | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | CP2102N-A01-GQFN24 | Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm | U3 |
| 1 | DX07S016JA1R1500 | usb_c:JAE_DX07S016JA1R1500 | J1 |
| 1 | D_Schottky_Small | Diode_SMD:D_SOD-123 | D1 |
| 1 | ESP32-WROOM-32D | RF_Module:ESP32-WROOM-32 | U4 |
| 1 | LM1117-3.3 | Package_TO_SOT_SMD:SOT-223 | U1 |
| 1 | LOGO | logo:dq_logo_10x10mm | G*** |
| 1 | PCA9306DP | Package_SO:TSSOP-8_3x3mm_P0.65mm | U2 |
| 1 | SP0503BAHT | Package_TO_SOT_SMD:SOT-143 | D2 |
| 1 | YELLOW | LED_SMD:LED_1206_3216Metric_Castellated | D4 |
The 61 most common of 65 parts.
Questions
How big is the LTP305 ESP32 CLOCK PCB?
It measures 125 × 70 mm and has 2 copper layers, 1.6 mm thick.
What parts does the LTP305 ESP32 CLOCK use?
65 parts, built around the CP2102N-A01-GQFN24, ESP32-WROOM-32D, HT16K33-28SOP and LM1117-3.3. 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 LTP305 ESP32 CLOCK KiCad files?
From the BasementCircuits/BulletTime repository on GitHub, at the commit this page was made from: the board is hardware/LTP305_ESP32_CLOCK.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the LTP305 ESP32 CLOCK 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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