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Lsa

SRA-VJTI·sra-board-hardware-design·LSA_board/lsa.kicad_pcb

Top view of the Lsa PCB
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Lsa is an open source ESP32 PCB design by SRA-VJTI: a 2-layer, 61.9 × 24.2 mm board with 16 components (13 distinct parts). It is built around the ESP32-WROOM-32E, CH340C, TCRT5000, MP1584 and more. Filed under robotics & motion and sensors and dev boards & breakouts.

ESP32-based Development Board for Robotics and Embedded Applications

- PhotoTransistor - Based upon the reflectivity coefficient of the surface( generally less than 1), the remaining light reflected from the surface is captured by the Photodiodes. Infrared Emmitter and complimentary phototransistor are used to efficiently detect the surface (white/black line). The amount of light received is directly proportional to the current generated by it. More the light, more the current, more the reading.

Lsa, from the project README
From the project README

Built around

ESP32-WROOM-32ECH340CTCRT5000MP1584AMS1117-3.3

Parts list

16 components, 13 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-WROOM-32E
TCRT5000
U1
1
CH340C
TCRT5000
U2
1
TCRT5000
U3
1
MP1584
TCRT5000
U4
1
AMS1117-3.3
TCRT5000
U5
1
USB_C_RECEPTACLE_USB2.0_16P
Conn_01x07_Male
J1
2
10K
4.7k
R1, R5
1
5.1K
150R
R2
1
5.1K
4.7k
R3
1
10K
150R
R4
2
150R
R6, R8
2
4.7k
R7, R9
1
100K
150R
R10

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