"Connect Error" & trouble getting the example to work

[MDAR]

Hi

I'm trying to add the 8Servo unit to my M5StickC-Plus

The first thing I always do is run your example to confirm everything is at least working as you intend it to.

On this occasion, all I can get out of the M5StickC-Plus is "Connect Error"

I have tried using the bottom Grove port with pins 32 & 33, but nothing changes.

What can you suggest I do next?

[MDAR]

Using the I2C scanner in the default firmware of an AtomS3, I have discovered that the 8Servo unit has a base address of 0x25

[MDAR]

It seems that the I2C address changes, depending on which device it's connected it

AtomS3 seems to be 0x54 M5stickC-Plus 0x25

Other than that, I can't get any result from it.

I've got to a point where the Servo is sent 180° and 0°

But nothing happens with the Servos.

The Servos twitch when they are powered up, so I have to assume they are working.

Is there anything I can do to test the outputs of the Servo connections to confirm the code is working?

[MDAR]

can you offer any assistance?

I have tried all combinations in this script, but the servo's do nothing.

Could it be that the drive.enableServoPower(1); line is not working?

Script I have tried

/*
*******************************************************************************
* Copyright (c) 2022 by M5Stack
*                  Equipped with M5StickC sample source code
*                          配套  M5StickC 示例源代码
* Visit for more information: https://docs.m5stack.com/en/hat/hat_8servos_1.1
* 获取更多资料请访问: https://docs.m5stack.com/zh_CN/hat/hat_8servos_1.1
*
* Product: 8Servos HAT v1.1.
* Date: 2022/07/12
*******************************************************************************
  Control the running and release of the servo.
  控制伺服机的运行和释放
*/

#include <M5StickC.h>
#include <M5GFX.h>

#include "Hat_8Servos.h"
M5GFX display;
M5Canvas canvas(&display);
Hat_8Servos drive;
bool Arelease = false;
bool Brelease = false;

void btn_task(void *arg) {
    while (1) {
        if (M5.BtnA.wasPressed()) {
            Arelease = !Arelease;
          Serial.println("Button A Released");
        }
        if (M5.BtnB.wasPressed()) {
            Brelease = !Brelease;
          Serial.println("Button B Released");
        }
        M5.update();
        vTaskDelay(20);
    }
}

void setup() {
    M5.begin();
    display.begin();
  //  Wire.begin();  // Init wire and join the I2C network.  

    if (display.isEPD()) {
        display.setEpdMode(epd_mode_t::epd_fastest);
        display.invertDisplay(true);
        display.clear(TFT_BLACK);
    }

    display.setRotation(1);
    canvas.setTextDatum(MC_DATUM);
    canvas.setTextColor(BLUE);
    canvas.createSprite(display.width(), display.height());
    canvas.setTextSize((float)canvas.width() / 160);
    while (!drive.begin(&Wire, 0, 26, 0x25)) { // Top port
    //     while (!drive.begin(&Wire, 33, 32, 0x25)) { // Bottom Grove port
        canvas.drawString("Connect Error", 30, 40);
        canvas.pushSprite(0, 0);
        vTaskDelay(100);
    }
    canvas.drawString("8SERVO HAT", 80, 10);
    canvas.drawString("Click Btn A", 80, 20);
    canvas.drawString("for release Servo", 80, 30);
    canvas.pushSprite(0, 0);
    xTaskCreate(btn_task,   /* Task function. */
                "btn_task", /* String with name of task. */
                8096,       /* Stack size in bytes. */
                NULL,       /* Parameter passed as input of the task */
                1,          /* Priority of the task. */
                NULL);      /* Task handle. */
}

void loop() {
    if (Arelease) {
        drive.enableServoPower(0);
        canvas.fillRect(0, 40, 160, 40, BLACK);
        canvas.drawString("SERVO RELEASE", 80, 50);
        Serial.println("Servo released");
        canvas.pushSprite(0, 0);
        vTaskDelay(100);
    } else {
        canvas.fillRect(0, 40, 160, 40, BLACK);
        canvas.drawString("SERVO RUNNING", 80, 50);
        Serial.println("Servo running");
        canvas.pushSprite(0, 0);
        drive.enableServoPower(1);
        vTaskDelay(100);
         drive.setAllServoAngle(180); 
        // drive.setAllServoPulse(2500); // 180deg

      //  drive.setServoPulse(0, 2500); // 180deg
      // drive.setServoAngle(0, 0);

        Serial.println(String(drive.getServoAngle(0)));
        vTaskDelay(600);
        drive.setAllServoAngle(0);
       // drive.setAllServoPulse(500); // 0deg       

        // drive.setServoAngle(0, 180);
        // drive.setServoPulse(0, 500); // 0deg

        Serial.println(String(drive.getServoAngle(0)));
        vTaskDelay(600);
    }
}

FYI

All "Tower Pro - Micro Servo gg SG90" or "Emax ES08MAII Analog Servo" servo's are brand new and have never been connected to anything else.

I get a small jitter from there when first powered up.

8Servo board has 9V external power

[MDAR]

I think I have found one of the issues.

There are TWO 8Servo versions.

V1.1 which is an open PCB that connected to the HAT pins, with a battery on-board @ address 0x36 https://shop.m5stack.com/products/m5stickc-8-channel-servo-driver-hat

and a V1.0 outboard white version, with external power connections, which I have been trying to use with V1.1 examples. https://shop.m5stack.com/products/8-channel-servo-driver-unit-stm32f030

I have a V1.1, I'll try that now.

HOWEVER - I see a THIRD version on the website https://shop.m5stack.com/products/m5stickc-8servos-hat

So now I know which board / Unit I am using, I STILL can't get any response from the servo's, other than their jitter when they power up.

Any advice?

FYI

I have achieved some movement with the Outboard 8Servo unit on a StickC-Plus, using UIFlow, which proves it can and does work.

However, I need to figure out how to get it working with the Arduino code I have spent 3 weeks working on already

[MDAR]

It took my 3 day to finally find this example for the HAT Servo

https://github.com/m5stack/M5-ProductExampleCodes/blob/master/Hat/servo-hat/Arduino/SERVO/servo/servo.ino

Which at least gives one working Servo to demonstrate with