Search found 43 matches
- Wed Jan 13, 2021 8:15 am
- Forum: General Discussion
- Topic: How to detect objects in range of 30 cm (180/360 angle)
- Replies: 5
- Views: 435
Re: How to detect objects in range of 30 cm (180/360 angle)
Could you have a platform in front or around the water bowl which acts like a pressure mat and pushes a micro-switch when the cat stands on it? Infra red beam which triggers when broken? Ultrasonic distance sensor? i.e. HC-SR04 (I don't know if cats can hear them?) BTW - There is a similar thread he...
- Wed Dec 30, 2020 2:22 pm
- Forum: Hardware
- Topic: Using 4x4 Keypad GPIO 15 and 2
- Replies: 3
- Views: 240
Re: Using 4x4 Keypad GPIO 15 and 2
this info. may be of help:
https://randomnerdtutorials.com/esp32-p ... nce-gpios/
https://randomnerdtutorials.com/esp32-p ... nce-gpios/
- Wed Dec 30, 2020 10:51 am
- Forum: ESP-IDF
- Topic: ESP32-CAM (OV2640) encode image to base64
- Replies: 1
- Views: 148
Re: ESP32-CAM (OV2640) encode image to base64
Hi, I am not sure if this will be of much help to you as I use the Arduino_IDE, but the basics may be the same? In this sketch I capture an image and then convert it to basic RGB data - https://github.com/alanesq/esp32cam-demo BTW - You may run in to problems at the highest resolutions as there may ...
- Sat Dec 19, 2020 6:03 am
- Forum: Hardware
- Topic: ESP32Cam motherboard
- Replies: 6
- Views: 478
Re: ESP32Cam motherboard
If they don't provide any schematic you'll have to reverse engineer it, follow the traces on the pcb. Can you take some high res photos of this other GND pin you're curious about, both sides of the board, and see what it connects to? If they're both labeled GND but not connected that sounds bad to ...
- Sat Dec 19, 2020 3:56 am
- Forum: Hardware
- Topic: ESP32Cam motherboard
- Replies: 6
- Views: 478
Re: ESP32Cam motherboard
Please post pictures / link to the 'motherboard' in question ? This is the only info. I have managed to find about it, which is very little http://www.hpcba.com/en/latest/source/DevelopmentBoard/HK-ESP32-CAM-MB.html This is a typical listing on ebay https://www.ebay.co.uk/itm/ESP32-CAM-WIFI-Bluetoo...
- Fri Dec 18, 2020 5:10 pm
- Forum: Hardware
- Topic: ESP32Cam motherboard
- Replies: 6
- Views: 478
ESP32Cam motherboard
I have just bought a motherboard from eBay for use with the esp32cam to see what they are (search eBay for esp32cam-mb). It seems to work well as long as I set the upload speed to the slower options (e.g. 115200) but the reset pin is very interesting, it works by linking together the gnd pin next to...
- Mon Dec 14, 2020 7:50 am
- Forum: ESP32 Arduino
- Topic: ESP32-cam with ds1302?
- Replies: 8
- Views: 9586
Re: ESP32-cam with ds1302?
If you use the sd card in 1-bit mode this frees up pins 4, 12 and 13 SD card access will be slower as it is only using one of the 4 data pins. i.e. in Arduino IDE the command is: SD_MMC.begin("/sdcard", true) You need to define them is input or output after initialising the sd card I have then been ...
- Mon Dec 07, 2020 10:02 am
- Forum: Hardware
- Topic: GPIO Pinouts
- Replies: 6
- Views: 537
- Thu Dec 03, 2020 4:26 pm
- Forum: General Discussion
- Topic: Which is best method for programming the ESP32?
- Replies: 3
- Views: 429
Re: Which is best method for programming the ESP32?
I have one which would not work at all until I changed the "flash frequency" from 80 to 40 in the Arduino IDE, I can't remember now what the symptoms were - I have a feeling it claimed to upload but nothing happened? btw - this may be of help? https://randomnerdtutorials.com/esp32-troubleshooting-gu...
- Wed Dec 02, 2020 5:57 pm
- Forum: General Discussion
- Topic: Which is best method for programming the ESP32?
- Replies: 3
- Views: 429
Re: Which is best method for programming the ESP32?
There is no problem programming the esp32 with the Arduino IDE, there are some good instructions on how to set it up here: https://randomnerdtutorials.com/installing-the-esp32-board-in-arduino-ide-windows-instructions/ I personally prefer to use the Arduino IDE as it means I can easily switch betwee...