Search found 9 matches

by spuzesp32
Mon Aug 27, 2018 8:56 am
Forum: Hardware
Topic: Please verify this custom ESP32 WROOM board design
Replies: 0
Views: 2935

Please verify this custom ESP32 WROOM board design

I'm in the process of doing my first custom PCB design. It has been quite a big learning process for me so far but I have finally come up with an initial schematic. The design is for a battery powered washing machine sensor and includes an LIS3DH accelerometer, a low quiescent current LDO (HT7833), ...
by spuzesp32
Wed Aug 22, 2018 4:46 pm
Forum: Hardware
Topic: Custom PCB with ESP32 WROVER: could not flash firmware in Arduino (boot mode problems)
Replies: 1
Views: 6037

Re: Custom PCB with ESP32 WROVER: could not flash firmware in Arduino (boot mode problems)

I would love to know if you found the solution to this problem. Can anyone with expertise help?
by spuzesp32
Fri Aug 25, 2017 8:25 am
Forum: General Discussion
Topic: Cannot upload to Wemos Lolin32
Replies: 5
Views: 10170

Re: Cannot upload to Wemos Lolin32

This is definitely a problem with the serial driver. I was able to successfully communicate with the device from my Linux laptop. Thanks to jaxxon for the info about the Silabs driver, installing the v4.11.2 of the driver now works fine on my mac also.
by spuzesp32
Fri Aug 11, 2017 9:43 am
Forum: General Discussion
Topic: Cannot upload to Wemos Lolin32
Replies: 5
Views: 10170

Cannot upload to Wemos Lolin32

I recently got a Wemos Lolin32 from here . I installed the CP210x driver for MacOS. When I connect the device to my macbook, it boots and the blue LED starts blinking. I also see the serial device /dev/cu.SLAB_USBtoUART appear. When I load up a serial monitor with baud rate 115200, I can see the dev...
by spuzesp32
Tue Aug 08, 2017 4:03 pm
Forum: General Discussion
Topic: ESP32 module with external antenna?
Replies: 1
Views: 11036

Re: ESP32 module with external antenna?

Yes there are a number of ESP32 modules that have U.FL / IPEX antenna connectors. You can buy the modules separately or the development board with all the components on a breakout. I recommend looking at this page: http://esp32.net/ Look at all the modules that have a U.FL connector and try to find ...
by spuzesp32
Sat Jul 29, 2017 10:49 am
Forum: General Discussion
Topic: Power consumption of various ESP32 boards?
Replies: 1
Views: 6422

Power consumption of various ESP32 boards?

I have a Sparkfun ESP32 Thing and while it advertises a deep sleep current usage of 2.5uA, I actually measured around 950uA when I put it into deep sleep (after disabling the power LED - with the LED it is about 2.5mA). I found others have reported similar results in this thread on the Sparkfun foru...
by spuzesp32
Thu Jul 27, 2017 8:30 am
Forum: General Discussion
Topic: Very strange I2C behaviour when reading a byte with NACK
Replies: 2
Views: 5003

Re: Very strange I2C behaviour when reading a byte with NACK

Thank you WiFive, that is exactly what was wrong! I feel stupid that it was such a simple error but also glad it wasn't something more nasty. :D
by spuzesp32
Wed Jul 26, 2017 5:17 pm
Forum: General Discussion
Topic: Very strange I2C behaviour when reading a byte with NACK
Replies: 2
Views: 5003

Very strange I2C behaviour when reading a byte with NACK

I've been trying to convert a program from the ESP Arduino core to a C version which reads accelerometer data via I2C. The Ardunio version works fine but I am struggling to get the C version to behave correctly. The problem is when reading bytes from the bus. The relevant code is: /** * Read registe...
by spuzesp32
Sun Jul 23, 2017 2:26 pm
Forum: General Discussion
Topic: Eclipse IDE - No module named serial
Replies: 12
Views: 28274

Re: Eclipse IDE - No module named serial

phando, what exactly did you do to fix this problem? I have exactly the same issue. I can compile from the command line, but when make runs from within Eclipse it seems to use a python version that does not have the serial module installed.