Schematic Symbol for TCRT5000: Reflective Optical Sensor 0.591"...

Terminal
An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
natarius
Ground
A common return path for electric current. Commonly known as ground.
jharwinbarrozo
20.5M
Net Portal
A net identifier used to create connectivity to other Net Portal with the same designator. #portal
jharwinbarrozo
43.0M
Power Net Portal
Power net portal is a special schematic object used to define a power or ground net. Power ports allow you to conveniently indicate a power net at any location in the design. Power nets of the same designator automatically connect throughout your design #portal #power
jharwinbarrozo
11.4M
Generic Resistor
A generic fixed resistor for rapid developing circuit topology. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0Ω 10Ω 100Ω 1.0kΩ 10kΩ 100kΩ 1.0MΩ 1.1Ω 11Ω 110Ω 1.1kΩ 11kΩ 110kΩ 1.1MΩ 1.2Ω 12Ω 120Ω 1.2kΩ 12kΩ 120kΩ 1.2MΩ 1.3Ω 13Ω 130Ω 1.3kΩ 13kΩ 130kΩ 1.3MΩ 1.5Ω 15Ω 150Ω 1.5kΩ 15kΩ 150kΩ 1.5MΩ 1.6Ω 16Ω 160Ω 1.6kΩ 16kΩ 160kΩ 1.6MΩ 1.8Ω 18Ω 180Ω 1.8KΩ 18kΩ 180kΩ 1.8MΩ 2.0Ω 20Ω 200Ω 2.0kΩ 20kΩ 200kΩ 2.0MΩ 2.2Ω 22Ω 220Ω 2.2kΩ 22kΩ 220kΩ 2.2MΩ 2.4Ω 24Ω 240Ω 2.4kΩ 24kΩ 240kΩ 2.4MΩ 2.7Ω 27Ω 270Ω 2.7kΩ 27kΩ 270kΩ 2.7MΩ 3.0Ω 30Ω 300Ω 3.0KΩ 30KΩ 300KΩ 3.0MΩ 3.3Ω 33Ω 330Ω 3.3kΩ 33kΩ 330kΩ 3.3MΩ 3.6Ω 36Ω 360Ω 3.6kΩ 36kΩ 360kΩ 3.6MΩ 3.9Ω 39Ω 390Ω 3.9kΩ 39kΩ 390kΩ 3.9MΩ 4.3Ω 43Ω 430Ω 4.3kΩ 43KΩ 430KΩ 4.3MΩ 4.7Ω 47Ω 470Ω 4.7kΩ 47kΩ 470kΩ 4.7MΩ 5.1Ω 51Ω 510Ω 5.1kΩ 51kΩ 510kΩ 5.1MΩ 5.6Ω 56Ω 560Ω 5.6kΩ 56kΩ 560kΩ 5.6MΩ 6.2Ω 62Ω 620Ω 6.2kΩ 62KΩ 620KΩ 6.2MΩ 6.8Ω 68Ω 680Ω 6.8kΩ 68kΩ 680kΩ 6.8MΩ 7.5Ω 75Ω 750Ω 7.5kΩ 75kΩ 750kΩ 7.5MΩ 8.2Ω 82Ω 820Ω 8.2kΩ 82kΩ 820kΩ 8.2MΩ 9.1Ω 91Ω 910Ω 9.1kΩ 91kΩ 910kΩ 9.1MΩ #generics #CommonPartsLibrary
jharwinbarrozo
1.5M
Generic Capacitor
A generic fixed capacitor for rapid developing circuit topology. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF 10pF 100pF 1000pF 0.01uF 0.1uF 1.0uF 10uF 100uF 1000uF 10,000uF 1.1pF 11pF 110pF 1100pF 1.2pF 12pF 120pF 1200pF 1.3pF 13pF 130pF 1300pF 1.5pF 15pF 150pF 1500pF 0.015uF 0.15uF 1.5uF 15uF 150uF 1500uF 1.6pF 16pF 160pF 1600pF 1.8pF 18pF 180pF 1800pF 2.0pF 20pF 200pF 2000pF 2.2pF 22pF 20pF 2200pF 0.022uF 0.22uF 2.2uF 22uF 220uF 2200uF 2.4pF 24pF 240pF 2400pF 2.7pF 27pF 270pF 2700pF 3.0pF 30pF 300pF 3000pF 3.3pF 33pF 330pF 3300pF 0.033uF 0.33uF 3.3uF 33uF 330uF 3300uF 3.6pF 36pF 360pF 3600pF 3.9pF 39pF 390pF 3900pF 4.3pF 43pF 430pF 4300pF 4.7pF 47pF 470pF 4700pF 0.047uF 0.47uF 4.7uF 47uF 470uF 4700uF 5.1pF 51pF 510pF 5100pF 5.6pF 56pF 560pF 5600pF 6.2pF 62pF 620pF 6200pF 6.8pF 68pF 680pF 6800pF 0.068uF 0.68uF 6.8uF 68uF 680uF 6800uF 7.5pF 75pF 750pF 7500pF 8.2pF 82pF 820pF 8200pF 9.1pF 91pF 910pF 9100pF #generics #CommonPartsLibrary
jharwinbarrozo
1.5M
Generic Inductor
A generic fixed inductor for rapid developing circuit topology. *You can now change the footprint and 3D model at the top level anytime you want. This is the power of #generics
jharwinbarrozo
14.0k
875105359001
10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcan
jharwinbarrozo
1.2M
CTL1206FYW1T
Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlink
jharwinbarrozo
1.1M
1070TR
Battery Holder (Open) Coin, 20.0mm 1 Cell SMD (SMT) Tab bate or batt #forLedBlink
jharwinbarrozo
700.5k

Stock	Qty 1
2	0–88	$0.7453–$1.0636
1	11K	$1.25
1	490	$1.28
2	0–483	$0.5611–$1.0285
4	129–3.7K	$0.5363–$0.921

I want to read PPG signal using TCRT5000

@copilot I want to read PPG signal using TCRT5000

3mo

To read a Photoplethysmography (PPG) signal using the TCRT5000, you will need to set up a circuit that can properly detect the reflected IR light from your skin, convert it to a suitable signal, and then amplify that signal for further processing.

Here's how you can achieve this:

Component Connections:
- LED Driver: Connect a current-limiting resistor to the IR emitter anode $A$ and then to a power source.
- Phototransistor Output: Connect the collector $C$ of the phototransistor to a pull-up resistor and then to the power source. The emitter $E$ of the phototransistor should be connected to the ground.

Amplification: Since the signal from the phototransistor might be weak, you should amplify it using an operational amplifier (Op-Amp) in a transimpedance configuration.

Filtering: Use a band-pass filter to remove noise and focus on the specific frequency range typically associated with the PPG signal (around 0.5 Hz to 4 Hz).

Analog-to-Digital Conversion (ADC): Finally, use an ADC to convert the analog PPG signal to a digital signal that can be processed by a microcontroller or a signal processor.

Here are the detailed steps with connections:

Step 1: Connect the TCRT5000

IR Emitter $A$:
- Connect $A$:1 to a current-limiting resistor (let’s assume 220Ω).
- Connect the other end of the resistor to the power supply (Vcc, typically 5V).

Phototransistor $C$ and $E$:
- Connect $C$:1 to the collector of the phototransistor.
- Connect a pull-up resistor (let’s assume 10kΩ) to the collector $C$:1, and the other end of the resistor to Vcc.
- Connect $E$:1 (emitter) to the ground (GND).

Step 2: Amplify the Signal

Use an Op-Amp like the LM358 or any suitable low-noise Op-Amp.

Connect the collector of the phototransistor to the inverting input (-) of the Op-Amp.

Connect a feedback resistor (let's assume 100kΩ) between the Op-Amp output and the inverting input.

The non-inverting input (+) of the Op-Amp goes to a reference voltage (GND or Vcc/2).

Step 3: Filter the Signal

Use a band-pass filter designed around your specific PPG frequency range.

For example, you can use RC filters or active filters with Op-Amps to achieve this.

Step 4: A/D Conversion

Connect the filtered signal to an ADC input pin on your microcontroller (e.g., ESP32-WROOM-32).

Ensure proper grounding and power supply connections.

Example Circuit Diagram: IR Emitter:

Connect $A$ (Pin 1): Resistor (220Ω) -> Vcc (5V).

Phototransistor:

Connect $C$ (Pin 1): Pull-up Resistor (10kΩ) -> Vcc (5V).

Connect $E$ (Pin 1): Ground (GND).

Op-Amp Setup:

Connect Collector $C$ of Phototransistor -> Inverting Input (-) of Op-Amp.

Connect Emitter $E$ of Phototransistor -> Ground (GND).

Connect Feedback Resistor (100kΩ) between Output and Inverting Input (-) of Op-Amp.

Connect Non-inverting Input (+) of Op-Amp -> Reference voltage (usually GND or Vcc/2).

Would you like a more detailed schematic, or is there any specific part you'd like more information on?

3mo

I want to read PPG signal using TCRT5000

eexma67

I want to read PPG signal using TCRT5000

10mo

Hey, I’m Copilot, your AI design assistant. I can help you brainstorm ideas, deb...

copilot

Hey, I’m Copilot, your AI design assistant. I can help you brainstorm ideas, debug problems, research components, and even make wiring connections for you. Ask me questions like:

@copilot I'm designing a PCB for a medical device that measures heart rate and temperature. Can you give me the list of components I will need?

@copilot How would I connect these parts to make the LED flash at 1kHz?

@copilot can you choose 4 digital pins on the ATMega328P-AU that I have here to use as GPIO given that I am already using some pins for reset, the external clock, UART, and I2C.

Chat with me by tagging @copilot on comments or in the chat.

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	Designator	Ruleset
	Fab Shapes	Override rule for Fab Shapes
	＊`REF`＊	Override rule for ＊`REF`＊
	TCRT5000_VIS	Override rule for TCRT5000_VIS
	Copyright 2016 Accelerated Designs. All rights reserved.	Override rule for Copyright 2016 Accelerated Designs. All rights reserved.

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jecstronic / TCRT5000

Schematic

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