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SRF04 |
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| Part Number | SRF04 |
| Manufacturer | ETC |
| Description | SRF04 - Ultra-Sonic Ranger Technical Specification This project started after I looked at the Polaroid Ultrasonic Ranging module. It has a number of disadvantages for use in small robots etc. 1. 2. 3... |
| Features |
The SRF04 will send out an 8 cycle burst of ultrasound at 40khz and raise its echo line high. It then listens for an echo, and as soon as it detects one it lowers the echo line again. The echo line is therefore a pulse whose width is proportional to the distance to the object. By timing the pulse it is possible to calculate the range in inches/centimeters or anything else. If nothing is detected then the SRF04 will lower its echo line anyway after about 36mS.
Here is the schematic, You can download a better quality pdf (161k) version srf1.pdf
The circuit is designed to be low cost. It uses ... |
| Document |
 SRF04 Data Sheet
PDF 157.03KB |
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Desde 2024. D4U Semiconductor.
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