Michal Choma

If I understand correct, BLE board save data on own memory, and using smartphone, you can view values, or download them?

and good cover (as transmitter) can be using Sigfox. Dont know, how it works in high altitude, but it has good cover at mountains, nature, far from cities.

One more question. It is chance to find electronics? I mean, if ballon will be catched by some tree it can be find. Also it will be dangerous for electric cables (ehm, high voltage wires.)

I looking something like that, for pumping different liquids to one glass, for physics experiments. https://www.youtube.com/watch?v=utVEQHJQQ5A

Zdravim, chcel by som sa spýtať, či ste riešili nejako s letiskom to, či môžete púštat balon do vzduchu? Netreba nato povolenia? Inak velmi sa mi páči vaš projekt a že som tu stretol Slovákov :D Hello, I would like to ask if you have somehow dealt with the airport if you can let the balloon go into the air? No need for permission? Otherwise, I really like your project.

Yes. But instructable cant be very old.

It is possible via leds. I remove leds, but also, you can try to measure voltage on that places, where leds were. How, I dont know exactly.

It should be better, and I think if is need to use any diode.

I hope you understand, and basically choosing solar panel depend on TP4056, not battery.

why 8 V -> 5V pin on wemos d1 mini is connected to voltage regulator (it is internal on board, which regulate to 3,3 V), so I ask, what is highest voltage, which I can plug.Dont have. I just connect my esp8266 to output of tp4056, and it cant connect to internet.

Hello, what wemos d1 mini board do you use? Because mine drain about 0,2 mA during deep sleep. I also, I have problem with charging board. If I use pins (out +; out -), it cant connect to internet (probably not enough current). Thanks.

Wemos - the problem was probably in battery. I connect to 5 V pin (on wemos d1 mini) Li ion battery (3,7 - 4,2 V), so that was why it takes 0,2 mA. If I connect cca 8V, to 5 V pin, probably I will damage wemos.Internet - the problem is , that current is not enough from TP4056 output. Wemos need 500 - 800 mA. I heard, that shorting pins - GND (battery) and GND (output) on TP4056 solve that.

what is smallest possible difference in temperature?

hello, very nice instructable. I have a question. How I know, how to connect step motor from CD-ROM mechanics to pins to L293d? Have that step motors 5V, GND, signal 1, signal 2 pinout, or it doesnt matter, and all pins on step motor are same?

something like this: https://www.google.sk/search?biw=1680&bih=896&tbm=isch&sa=1&ei=BDkiW9nLG8XfwAKXto-ICQ&q=step+motor+pinout&oq=step+motor+pinout&gs_l=img.3..0i19k1.20059.21542.0.21651.7.4.0.3.3.0.212.527.1j2j1.4.0....0...1c..64.img..0.7.547...0i8i30i19k1j0i30i19k1.0.PFzPHSIJWEQ#imgrc=6AQmBSRWRmatMM:

voltage - input of TP4056 must be higher then 4,2 V so I choose 1.5 times bigger voltage.Current - C-rate law. I just check what usually is charging current for lions battery - it is around 500 mA, but smaller currents are good , too. Also, during summer, the battery is charge fully + as temperature increase, the voltage of battery is higher. I dont want bake battery.

hello, I would like to make water level IR sensor. I think about use tube, where at top I add IR receiver and trasmitter. And bottom of tube, I use some plastic thing to reflect ir wawes. My question is, how accurate is IR? I know it depend on ambient light, so I would like to use total dark (I make plastic roofs on top tube, max. from bottom some light, ).

hello, I interest in esp powering. I know that ESP when connect to wifi and send data to server, has around 700 - 800 mA peak current. Anyway, it is necessary to use such high capacity cap?

Hello, dont you have problem with fake bmp or bme sensors from china? They have different I2C adress and doesnt works proper. I buy one BMP and use library from here: http://giocarduino.altervista.org/e47-sensore-pres...It works on arduino pro mini, but not on esp8266. Pressure was wrong, when I try, even temperature was good. I think problem is in using char variables in esp.

amazing! I thinking about that measuring system, when I watched TdF. Normally, power of cyclist is measured by pulse. With these load cells, you get exact values (aproximation is only in pedal).Very good. But when I go outside, it will be work? I need internet connection or save values on SD card, i think. Maybe using gsm module and sim card, it should be possible to log data via mobile´s internet. Thanks for project.

very nice wifi module. I looking for low power wifi sending, I check that maximum current can be 20 mA. Using esp and regulator it takes a little bit more time to connect everything correct. I looking for something like this: arduino pro mini + low power wifi module + sensors, 1. arduino sleep for 15 minutes 2. measure some values and send to thingspeak 3. sleep again. This module help me, thanks

what is current consumption? Check group https://www.facebook.com/groups/1829154687394948/

hello, I looking for IC which is ADC and multiplexer in one. It is possible to find that? I do on my weatherstation based on esp, and I have problem with internal ADC. I looking for external, but dont know if it helps. Check my channel, if you want, about my esp logger.

Nice project, I have question, how about power consumption? Do you use sleep mode? If yes, what is sleep current?

Nice project, what about IoT and esp to feed fish with mobile aps? On thingspeak that should be possible to manage your servo motor. But you must power esp always.

i post here video, how error lines looks like.

1. dont connect VCC of serial USB adapter with VCC, I think it can damage your usb port. I just dont connect it. Only GND2. Use resistors pls. Mostly 10kOhms. Check my instructable. Capacitor according ESP datasheet is 100nF, but I use also 47microFarad.

I can upload problematic lines.

I dont think that problem is in serial commands. Esp itself has a lot of memory.

thanks, probably quality of signal (and image then )depend on internet of my home.

when i buy esp8266 12, it is necessary to change firmware, when I programme it via arduino ide? Or exist better firmware, worse for example when I want deep sleep,better is using other firmware?