Отрицательный опыт – тоже опыт и этим ценен! По случаю был приобретен BLDC мотор на 7,4 вольта без драйвера. После неуспешных поисков подходящего драйвера пришлось делать свой. На основе статей AntonChip – http://radioparty.ru/programming/avr/c/611-lesson-bldc-sensorless и http://radioparty.ru/programming/avr/c/632-lesson-bldc-sensorless-ir2101 было принято решение использовать первую модель – без IR2101 (мотор ниже 10 вольт). Пришлось переделать схему на DIP детали. В...
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Программируем ATmega8 используя Atmel Studio и USBASP
Источники информации: https://mysku.ru/blog/ebay/36603.html – программирование atmel 8 настройка USBASP в ATMEL Studio - http://mcustore.ru/projects/ispolzovanie-programmatora-avrasp-v-atmel-studio/ Задача – программирование ATmega8 с использованием USBASP и ATMEL Studio. С использованием материалов статей получилось следующее решение: 1. подключил внешний кварц 8Mhz по схеме (конденсаторы 22pf) 2. с использованием AVR8 Burn-O-Mat прописал фьюзы для 8Mhz внешнего кварца получилось 3. в ATMEL...
How to make simple Telegram bot with TelegramBotAPI
Very good article (Russian) by Aftamat4ik.ru about installation of Simple Telegram bot with TelegramBotAPI example. How to make cloudflare SSH free certification is here: https://www.lifeofgeek.com/setup-free-ssl-cloudflare/ I have already installed https and skiped this part of article. Also I have used Putty SSH client and asked for SSH login and password for access to hosting. In my case...
How to make Facebook Messenger Chatbot
You need to install Program0-O free chatbot and follow this instruction https://www.lifeofgeek.com/build-responsive-facebook-messenger-bot/ Some important items of installation: 1. do not forget that limit of symbols in one bot message reply is 640 – need to crop message ore prepare solution what to to with other symbols over 640. 2. images, video, audio files is used...
Jupyter notebook installation tricks for Win7 x64
https://github.com/jupyterhub/jupyterhub/issues/444 and sitecustomize.py(Lib\site-packages) with this text inside: import sys; reload(sys); sys.setdefaultencoding(‘ISO-8859-1′) and all will be ok.
Traffic signs recognition. Part5. How to recognize traffic sign from video.
After all steps we need to combine trained RNN to real application which will recognize traffic signs from video stream. Lets’s do it. Python program: #!/usr/bin/env python ''' traffic signs detection with trained RNN traffic_ru_v1.pb USAGE: ts_detect_2.py ''' # Python 2/3 compatibility from __future__ import print_function from __future__ import division # for...
Traffic signs recognition. More simple RNN. Part4.
There is more simple architecture of RNN with tensorflow but result on russian traffic dataset is bad (about 70% of recognized images with 100000 epoch – training time – about 15 hours). Anyway I will show python program for information. """ modification of traffic_ru dataset with image preprocession (make YUV mormalized images) from http://jokla.me/robotics/traffic-signs/...
Traffic signs recognition. Training RNN and checking result. Part3.
We have prepared all necessary files after implementation of part 1 and part 2 works. Lets start procedure of learning with tensorflow. TF model part taken at this link (Jiovanny Claudio). Jiovanny gave very good explanation of Tensorflow model which have used for deep learning. I have made some corrections in model for correct...
Traffic signs recognition. Preparing russian dataset for learning. Part 2.
I have described bad attempts to train RNN with Russian Traffic dataset before – here for example. To solve this problem first I have sorted all images into classes to it’s own directory and found that quality of images is very bad: 1. there is a lot of images which can’t recognize by human...
Traffic signs detection (Python, OpenCV, Tensorflow). Approaches and possible solutions. Part 1.
There is some approaches how to detect traffic signs (TS) at the image (some info available here and here - (thanks to Miki) and here): 1. Color-based detection 2. Shape-based detection 3. Pattern detection and recognition Colors at the image could be different – depends of quality, camera sensor, backligth etc. If You want to use...