I recently purchased a few CH-201 sensors in hopes of getting it to work with a prototype I am developing. My prototype currently uses an arduino to power it. My question is if there is any way I can the arduino and CH-201 chip to communicate.
Thanks!
Hello!
It's definitely possible. I have it working with my Arduino Nano. Of course, you'll have to make sure you're wiring it up correctly and using a 3.3-1.8V regulator and I2C Logic Level converter.
You need to modify the existing hello chirp software to run on your Arduino chipset. For example, with the Arduino Nano 33 BLE, you'll need to know how to set up the timer registers for the Nordic chipset. Luckily, Arduino simplifies a lot of the register reading/writing processes, so you can trim A LOT of the C code.
One other thing, the Uno doesn't have enough on board memory to run the Hello Chirp firmware. That's why I upgraded to the Nano 33 BLE.
Good luck!
Hello!
I'm currently trying to get an ESP32 or Arduino to communicate with the CH-101. I'm at the point where I got the Hello Chirp example to compile in Visual Studio Code with PlatformIO. But now I'm pretty helpless because I can't figure out what to change to get it to work with the ESP/Arduino. Where do I specify the Pins, Timers, etc?
I was also thinking of starting from scratch and communicate over I2C and directly access the registers. But I can't find anything about the register addresses in any datasheet?
Is there any chance that you share your working code with me? I would really appreciate it. By now, you're the only one who says they got it working with an Arduino as there are no tutorials at all.
Lukas
Hey!
So I'm in the same pickle as the person above. I'm using an ESP32 and CH201. I understand that I have to modify "chirp_bsp" to suit my ESP32 but have no idea where to start. Any help on how to do this/get the CH201 working with Arduino would be greatly appreciated.
Thanks in advance,
Jerry
Hey togehter,
I’ve been working in the last couple of weeks on getting the TDK CH101 ultrasonic sensor to communicate with the ESP32.
I’m using the Qwiic board from SparkFun. I took the HelloChirp example and wrote my own board support package. Now I got it to the point where everything compiles, the board gets initialized correctly according to the description, and the ESP flashes the whole firmware to the CH101 via I2C successfully. Or at least it says so. Because one part of the initialization process is to give the CH101 a new I2C address, but when it later checks if the address is reachable, it gets a not-acknowledged back.
I already tried the following:
• With and without pull-up resistors for SDA and SCL
• Different pins for SDA and SCL
• Reducing the clock frequency to 10kHz to give enough time for clock stretching
• Different level converter board and different sensor
• With and without debug messages
Does anybody have an idea where the problem lies? I assume it’s somewhere in I2C_write, I2C_mem_write, I2C_read, I2C_mem_read.
I’m pretty confused because it says that everything gets flashed successfully but the sensor is then not reachable.
This is the output I get (I shortended it, because the part in the middle gets tried 5 times):
Hello,
I stayed the past 2 weeks checking how to connect CH101 to esp32 using arduino ide, could you please share your progress if it is possible? Thank you in advance for your cooperation
Hi everyone,
@Lukas if you are kind enough to share your work on github I can join in the development and not start from scratch.
I'd actually like to us the CH-101 with ESP32 but for the sake of progress, I ended up designing a small ARM based board to quickly deploy the library.
In case you are willing to start a repo, I would happily pitch in and start development with you.
Let me know
Bests
Hello!
@Lukas and @shirogeek , have you solved the problem?
Could you share the solution?
Thank you in advance.
Hello!
I’m in the same condition of where to start development for interfacing CH201 with STM32xx Arduino.
I tried to get CH201's detailed documents for developing interface but nothing is available.
Can any one please share process/steps to develop Arduino application for CH201.
Thanks in advance,
-Madhav