2 layers86 × 159 mm
4 layers94 × 52.1 mm
Stm32 ltc encoder
max-verem/stm32_ltc_encoder3STM32 based SMPTE Linear Timecode Generator/Reader, isolated input/output
- Size
- 94 × 52.1 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 50
- Nets
- 68
- Pads
- 167
- Tracks, vias
- 168, 31
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 17 Mar 2025
- Updated
- 13 Apr 2025
Overview
Stm32 ltc encoder is an open-source printed circuit board by max-verem, from the max-verem/stm32_ltc_encoder repository on GitHub. It is a 4-layer board of 94 × 52.1 mm with 50 parts on 68 nets, routed with 168 tracks and 31 vias.
It is built around the B0505S-1W, LM2902 and LTV-817S, with the LM2903, NCD0805R1 and MMBT3904 among its other parts. Its parts include 20 resistors, 7 ICs, 5 connectors, 4 capacitors and 3 diodes. It belongs with the STM32 boards of this library.
Main components
7
B0505S-1W
SIP-4-45℃~+85℃ 1 1.5kV 100uF 1W 200mA 23mA 4.5V~5.5V 5V 60mVp-p 77kHz 79% SIP-4 Isolated Power Modules ROHSEVISUNIsolated Power Modules
LM2902
SOP-14-15V~-1.5V、1.5V~15V -40℃~+125℃ 1.3MHz 2nA 300nA 30uV/℃ 3V~30V 4 400V/ms 40mA 40nV/√Hz@1kHz 700uA 7mV 80dB Built-in compensation SOP-14 Operational Amplifier ROHSSlkorOperational Amplifier
LTV-817S
SMD-4P-55℃~+110℃ 1 1.2V 100mV@20mA,1mA 200mW 35V 3us 4us 50% 50mA 50mA 5kV 600% 6V DC Phototransistor SMD-4P Transistor, Photovoltaic Output Optoisolators ROHSLite-OnTransistor, Photovoltaic Output Optoisolators
LM2903
SOP-8-18V~-1V、1V~18V 0℃~+70℃ 10mV 1mV 2 25nA 2V~36V 36V 400uA 5nA DTL、TTL、CMOS、ECL、MOS Open Collector SOP-8 Comparators ROHSHXY MOSFETComparators
NCD0805R1
LED0805-30℃~+85℃ 1.6V~2.6V 130° 195mcd 25mA 615nm~630nm 630nm 65mW Discrete Diode Red 0805 LED Indication - Discrete ROHSFoshan NationStar OptoelectronicsLED Indication - Discrete
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)MMBT3906
SOT-23-55℃~+150℃ 1 PNP 100 100nA 200mA 200mW 300MHz 300mV 40V 5V PNP SOT-23 Bipolar (BJT) ROHSTWGMCBipolar (BJT)
README
README.mdstm32_ltc_encoder
This device used for decoding/encoding LTC (EBU Linear timecode) from/to VTRs or other sources.
Decoded Output sent to CDC serial. Encoding control cli available on second CDC serial.
schematic
photo
encoding/generating LTC
decoding LTC
Parts
50| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H4, H5, H6, H8, H9, H10 |
| 6 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R9, R10, R11, R12 |
| 4 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4, R6, R14, R16 |
| 3 | 150 | Resistor_SMD:R_0805_2012Metric | R3, R19, R20 |
| 3 | NCD0805R1 | LED_SMD:LED_0805_2012Metric | D1, D2, D3 |
| 2 | 100 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R17, R18 |
| 2 | 100n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C4 |
| 2 | 1uF 50V | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2 |
| 2 | 330 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R13, R15 |
| 2 | 3k3 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R7, R8 |
| 2 | B0505S-1W | Converter_DCDC:Converter_DCDC_TRACO_TME_03xxS_05xxS_12xxS_Single_THT | U4, U6 |
| 2 | LTV-817S | Package_DIP:SMDIP-4_W9.53mm | U5, U7 |
| 1 | 10k (5k) | Potentiometer_THT:Potentiometer_Bourns_3266W_Vertical | RV1 |
| 1 | 1K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5 |
| 1 | INPUT | TerminalBlock:TerminalBlock_bornier-2_P5.08mm | J3 |
| 1 | LM2902 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U2 |
| 1 | LM2903 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U3 |
| 1 | MMBT3904 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | MMBT3906 | Package_TO_SOT_SMD:SOT-23 | Q2 |
| 1 | OLED | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J2 |
| 1 | OLED SUPPORT | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J4 |
| 1 | OUTPUT | TerminalBlock:TerminalBlock_bornier-2_P5.08mm | J1 |
| 1 | STM32F4x1Cx_v2.0+ | Package_DIP:DIP-40_W15.24mm_LongPads | U1 |
| 1 | TEST | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J6 |
Questions
How big is the Stm32 ltc encoder PCB?
It measures 94 × 52.1 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Stm32 ltc encoder use?
50 parts, built around the B0505S-1W, LM2902, LTV-817S and LM2903. 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 Stm32 ltc encoder KiCad files?
From the max-verem/stm32_ltc_encoder repository on GitHub, at the commit this page was made from: the board is hw/stm32_ltc_encoder.kicad_pcb and its schematic hw/stm32_ltc_encoder.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Stm32 ltc encoder design in my own project?
Its repository states no licence, so its author keeps all rights: ask max-verem before reusing the design.
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