Comments on: Raspberry Pi Pico: HC-SR04 Ultrasonic Sensor (MicroPython) https://randomnerdtutorials.com/raspberry-pi-pico-hc-sr04-micropython/ Learn ESP8266, ESP32, Arduino, and Raspberry Pi Thu, 22 Jan 2026 19:31:32 +0000 hourly 1 https://wordpress.org/?v=6.8.5 By: Sara Santos https://randomnerdtutorials.com/raspberry-pi-pico-hc-sr04-micropython/#comment-1094453 Mon, 08 Sep 2025 10:30:47 +0000 https://randomnerdtutorials.com/?p=170969#comment-1094453 In reply to Alex.

Hi.
You’re right.
The 1KOhm resistors are not represented correctly in the pictures.

Regards,
Sara

]]> By: Alex https://randomnerdtutorials.com/raspberry-pi-pico-hc-sr04-micropython/#comment-1093455 Fri, 05 Sep 2025 16:55:12 +0000 https://randomnerdtutorials.com/?p=170969#comment-1093455 the text says 100 ohms resistence but the colors not match

]]> By: Sara Santos https://randomnerdtutorials.com/raspberry-pi-pico-hc-sr04-micropython/#comment-1093109 Thu, 04 Sep 2025 17:02:47 +0000 https://randomnerdtutorials.com/?p=170969#comment-1093109 In reply to Ron Ronhovde.

Hi.
To be honest, I’m not sure.
I haven’t made that experiment. You have to try it yourself.

Then, share your results.

Regards,
Sara

]]> By: Ron Ronhovde https://randomnerdtutorials.com/raspberry-pi-pico-hc-sr04-micropython/#comment-1093088 Thu, 04 Sep 2025 15:45:34 +0000 https://randomnerdtutorials.com/?p=170969#comment-1093088 Nice project. I have been thinking about something like that to remind me when my softener salt is getting low. My one question is how long can the wires be between the Pico and the sensor? I don’t want to keep the Pico equipment around the salt any more than I have to .

Thanks for your help.

]]> By: Upgraderz https://randomnerdtutorials.com/raspberry-pi-pico-hc-sr04-micropython/#comment-1091114 Sun, 31 Aug 2025 10:32:06 +0000 https://randomnerdtutorials.com/?p=170969#comment-1091114 The project was nice.

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