interesting mine has no jumper fitted, its not dead just gives random results , temp works ok still
led still comes on
i will solder the jumper and try again
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Re: Heart rate sensor MAX30102
interesting mine has no jumper fitted, its not dead just gives random results , temp works ok still
led still comes on
i will solder the jumper and try again
Warning I'm not a teacher
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Re: Heart rate sensor MAX30102
It is very important to:
1. have the finger cleaned with alcohol before testing and also clean the sensor with alcohol too.
2. Not pressing hard the finger on the sensor, the shell of the sensor should be lightly tight on the finger.
3. No ambient light should come in the sensor area. Most if not all commercial devices are black for a purpose.
Hope this helps.
Ioannis
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Re: Heart rate sensor MAX30102
i cleaned the screen with metho it had a spec of gunge in the wrong spot now restored. mine will not run for long at 5v 3-4 minutes then the readings are crap, jumper made nil difference. i notice the led got substantially brighter when it goes strange. 5v is a no go for this unit
Warning I'm not a teacher
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Re: Heart rate sensor MAX30102
this kind of defines the problem
peaks are easy to see, my 32 sample search yields these peaks its not easy
sample
5
51
95
98
raw data
Code:lpf red ir 4235 4275 4435 4236 4250 4443 4238 4259 4440 4241 4264 4450 4243 4265 4482 4244 4254 4471 4244 4247 4446 4243 4244 4425 4243 4250 4424 4242 4243 4394 4242 4248 4397 4241 4244 4372 4239 4232 4376 4235 4223 4377 4231 4214 4375 4227 4214 4364 4224 4212 4385 4220 4205 4382 4218 4210 4403 4218 4225 4401 4217 4216 4398 4217 4229 4398 4217 4224 4400 4218 4238 4410 4220 4244 4412 4223 4250 4401 4225 4248 4398 4226 4245 4402 4228 4247 4398 4230 4248 4386 4233 4256 4402 4232 4238 4390 4233 4250 4400 4236 4262 4405 4238 4256 4400 4237 4237 4405 4236 4235 4400 4236 4245 4420 4234 4227 4431 4235 4251 4442 4234 4234 4437 4235 4252 4432 4236 4248 4420 4239 4265 4455 4241 4263 4440 4243 4267 4436 4246 4276 4439 4245 4249 4424 4246 4255 4433 4249 4278 4442 4250 4262 4442 4252 4271 4427 4252 4254 4429 4250 4242 4408 4246 4228 4399 4241 4221 4399 4234 4195 4378 4229 4205 4378 4224 4200 4395 4220 4204 4381 4216 4200 4363 4212 4195 4377 4209 4198 4372 4208 4208 4365 4207 4215 4366 4209 4227 4375 4212 4240 4371 4213 4227 4371 4214 4229 4358 4215 4229 4353 4215 4220 4360 4215 4218 4356 4215 4222 4357 4217 4233 4365 4217 4228 4360 4218 4232 4366 4217 4222 4364 4217 4230 4366 4217 4224 4373 4216 4220 4391 4217 4233 4381 4215 4211 4391 4215 4221 4401 4215 4222 4404 4215 4222 4411 4215 4220 4425 4215 4221 4418 4216 4226 4413 4217 4233 4427 4218 4238 4421 4219 4237 4416 4221 4245 4428 4222 4237 4421 4226 4261 4422 4229 4255 4436 4233 4263 4432 4236 4269 4437 4240 4272 4423 4241 4258 4431 4241 4252 4403 4240 4246 4381 4236 4223 4368 4231 4207 4343 4227 4213 4334 4223 4206 4341 4220 4211 4338 4218 4213 4334 4214 4194 4325 4213 4209 4336 4211 4201 4326 4210 4210 4328 4209 4211 4327 4207 4205 4321 4205 4195 4332 4203 4199 4324 4203 4213 4349 4201 4194 4352 4200 4202 4341 4198 4200 4338 4198 4203 4333 4197 4197 4348 4195 4188 4356 4194 4194 4377 4194 4204 4371 4194 4202 4383 4193 4195 4408 4193 4206 4383 4194 4209 4387
Warning I'm not a teacher
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Re: Heart rate sensor MAX30102
results from PICKIT UART TOOL at 9600.
Code:RED IR 8875 9120 8859 9127 8867 9128 8868 9127 8871 9116 8875 9121 8880 9115 8873 9115 8870 9115 8876 9123 8881 9127 8880 9114 8875 9118 8877 9129 8873 9114 8879 9127 8895 9119 8879 9129 8870 9128 8880 9130 8897 9139 8888 9116 8880 9123 8886 9146 8889 9124 8890 9119 8897 9113 8891 9122 8872 9134 8896 9124 8885 9121 8875 9121 8882 9130 8885 9129 8892 9125 8894 9132 8884 9117 8888 9127 8881 9116 8878 9124 8876 9112 8864 9117 8873 9120 8867 9113 8879 9123 8873 9125 8865 9119 8872 9131 8873 9118 8878 9124 8877 9123 8878 9119 8878 9116 8891 9108 8878 9110 8869 9140 8877 9119 8870 9119 8865 9116 8878 9120 8882 9126 8884 9138 8877 9130 8879 9116 8883 9127 8883 9128 8887 9140 8890 9126 8876 9107 8884 9116 8875 9121 8888 9138 8893 9117 8885 9116 8895 9114 8876 9128 8891 9128 8893 9130 8889 9123 8881 9114 8886 9119 8876 9116 8883 9126 8876 9118 8875 9126 8866 9115 8882 9115 8866 9113 8882 9118 8880 9118 8885 9108 8877 9123 8880 9125 8869 9122 8888 9123 8871 9119 8881 9118 8876 9117 8890 9136 8879 9115 8891 9124 8886 9115 8891 9107 8884 9110 8886 9128 8899 9117 8886 9138 8883 9133 8902 9130 8890 9132 8877 9124 8889 9131 8895 9127 8884 9132 8887 9127 8885 9120 8893 9139 8895 9135 8875 9131 8889 9109 8891 9110 8881 9121 8875 9123 8889 9126 8867 9124 8873 9111 8875 9115 8875 9109 8865 9102 8874 9119 8890 9124 8886 9121 8879 9115 8877 9114 8876 9118 8878 9106 8867 9114 8874 9110 8881 9121 8877 9120 8885 9113 8873 9107 8889 9127 8876 9127 8889 9115 8874 9110 8888 9119 8877 9131 8884 9108 8888 9114 8882 9116 8881 9110 8891 9113 8871 9114 8879 9107 8882 9115 8877 9115 8886 9114 8880 9118 8874 9100 8864 9112 8864 9112 8872 9102 8867 9114 8855 9092 8865 9117 8873 9104 8861 9115 8855 9113 8868 9099 8849 9098 8875 9109 8868 9111 8861 9108 8872 9100 8873 9113 8871 9123 8863 9100 8866 9110 8874 9106 8870 9102 8884 9100 8873 9117 8865 9109 8860 9111 8861 9117 8872 9102 8868 9107 8885 9111 8869 9098 8866 9116 8876 9106
The following is the circuit board, which is changed and added a 3.3V step up/ step down Voltage regulator. Just ot be on a safe side.
The following is a second measurement which based on a samsung's mobile measurement it suppose to be close at 78 bpm.
Code:RED IR 8492 8577 8489 8590 8493 8576 8494 8592 8500 8601 8499 8596 8509 8588 8504 8580 8504 8586 8514 8588 8507 8585 8504 8583 8513 8580 8514 8580 8517 8594 8514 8588 8512 8584 8499 8575 8507 8590 8514 8580 8499 8573 8505 8607 8504 8575 8489 8574 8498 8586 8496 8579 8510 8582 8498 8580 8499 8578 8537 8574 8505 8576 8497 8563 8503 8585 8500 8568 8488 8581 8505 8582 8506 8589 8521 8576 8497 8588 8509 8583 8507 8583 8499 8583 8497 8575 8502 8580 8486 8569 8505 8579 8507 8571 8499 8576 8505 8572 8502 8580 8498 8570 8499 8569 8496 8571 8485 8572 8496 8564 8511 8580 8499 8570 8498 8562 8497 8578 8499 8581 8493 8656 8497 8579 8503 8573 8507 8584 8492 8570 8499 8565 8495 8572 8501 8573 8511 8576 8502 8568 8506 8562 8499 8557 8498 8572 8492 8563 8505 8555 8503 8567 8494 8565 8493 8570 8502 8573 8489 8564 8493 8558 8507 8565 8505 8574 8499 8571 8497 8576 8493 8574 8489 8566 8498 8568 8496 8569 8495 8578 8517 8570 8515 8564 8506 8556 8509 8571 8506 8572 8497 8565 8508 8570 8499 8571 8506 8566 8443 8575 8498 8571 8501 8568 8500 8562 8512 8569 8497 8565 8510 8573 8499 8563 8508 8555 8526 8566 8513 8566 8513 8582 8505 8562 8511 8585 8492 8564 8511 8582 8514 8563 8502 8570 8506 8570 8518 8563 8513 8570 8508 8575 8505 8586 8510 8560 8519 8572 8516 8580 8511 8584 8506 8562 8496 8565 8519 8570 8502 8575 8631 8578 8510 8570 8529 8571 8516 8562 8515 8566 8510 8568 8514 8579 8513 8581 8518 8573 8524 8578 8504 8569 8508 8559 8515 8569 8515 8575 8512 8580 8514 8555 8525 8583 8519 8577 8517 8572 8507 8571 8516 8572 8521 8571 8525 8581 8505 8563 8522 8565 8518 8569 8516 8559 8515 8578 8521 8567 8502 8571 8522 8577 8528 8586 8529 8581 8518 8579 8507 8562 8520 8571 8512 8560 8518 8572 8531 8550 8507 8576 8503 8568 8515 8578 8509 8573 8518 8570 8517 8566 8508 8567 8509 8570 8520 8572 8518 8585 8513 8565 8521 8566 8525 8569 8515 8578 8515 8573 8517 8567 8515 8578 8510 8565 8515 8572 8531 8564 8516 8563 8519 8560 8514 8571
Last edited by astanapane; - 15th January 2022 at 13:44.
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Re: Heart rate sensor MAX30102
For everyone info,
found this interesting article.
https://morf.lv/implementing-pulse-o...using-max30100
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Re: Heart rate sensor MAX30102
wrong info above, as i captured ascii and not hex values.
I'll try to fix that on the following message.
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Re: Heart rate sensor MAX30102
if you are using excel then its easier to import dec rather than hex, i changed to dec
Warning I'm not a teacher
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