Monthly Archives: March 2016

Eleks Maker Laser Cutter 5.5W 5500MW with Benbox

GitHub: grbl
GitHub Wiki: Connecting Grbl

D12 = Laser On

D11 = Laser On (PWM)


5500mW A3 30x40cm Desktop DIY Violet Laser Engraver Picture CNC Printer Assembling Kits


X-Benbox , 300*400mm , 5500MW big DIY laser engraving machine,5.5W diy marking machine,diy laser engrave machine,advanced toys
X-Benbox , 300*400mm , 5500MW big DIY laser engraving machine , 5.5W diy marking machine,diy laser engrave machine,advanced toys

Kamera Module

Viele Kamera-Sensoren haben einen Bayer-Filter / Bayer-Sensor:

Please note that this is a Bayer sensor. You will have to do a large amount of post-processing on it to get YUV or RGB out.

Source 14mp mipi camera

Wikipedia: Bayer-Sensor
Bayer to RGB Demosaicing
How a Pixel Gets its Color | Bayer Sensor | Digital Image
UDACITY: Kurs Computational Photography

  • OV528
  • OV2640
  • OV7670
  • OV5642 (5MP)
  • OV8865 (OmniVision, 8MP)
  • OV9655
  • OV9712
  • CS5642 (5MP)
  • GC0309
  • S5C7322X
  • S5K433CA
  • SX5433M14X
  • IMX286 (Sony)

BananaPi BPI-M3 camera, one is OV5640(5M Pixel),and the other is OV8865(8M Pixel)

Resolution Sensor Vendor Camera Module Manufacture
0.3MP Omnivision OV7660 / OV7670 / OV7675 / OV7725 ArduCAM
0.3MP Aptina MT9V111/MT9V034 ArduCAM
1.3MP Aptina MT9M112 / MT9M001/AR0134 ArduCAM
2MP Omnivision OV2640 ArduCAM
2MP Aptina MT9D111 / MT9D112 ArduCAM
3MP Omnivision OV3640 ArduCAM
3MP Aptina MT9T112 ArduCAM
5MP Omnivision OV5640 / OV5642 ArduCAM
10MP Aptina MT9J001 ArduCAM
14MP Aptina MT9F002 ArduCAM

How to initiate CMOS camera GC0309?
github: Linux driver gc0309.c
VC0706 Camera Module DIY Guide
How to use OV7670 Camera Module with Arduino?
WaveShare Camera Modules


AVRcam nachbauen


ArduiCAM: Arduino Based Camera
ArduCAM ESP32 UNO, ArduCAM Library Introduction

Composite Video

China Fräser / Fräsköpfe

Drill Bits

HSS 4 Flute End Milling Cutter Drill Bit 3/16×1/4 Inch Straight Shank Engraving Tool
10pcs 1.5mm-3.175mm Carbide End Mill Engraving Bits For CNC Rotary Burrs
Drillpro 10pcs 1.3mm-3.175mm Carbide End Mill Engraving Bits for CNC PCB Rotary Burrs
Drillpro 10pcs 3.175mm Tungsten Steel Milling Cutter Bits End Mills
10pcs 1/8 Inch Shank 2 Flutes Carbide Ball Nose End Mills 17mm 2 Flute CNC Cutting Tool

LoPy and MicroPython

Internet of Things (IoT) Protocols & Standards
LoRa: The Things Network

kickstarter: LoPy – the LoRa, WiFi and Bluetooth IoT development platform, 8. Feb 2016 – 8. Mar 2016 (30 Tage)

kickstarter: Micro Python: Python for microcontrollers, 13. Nov 2013 – 13. Dez 2013 (30 Tage)
MicroPython – Python for microcontrollers
github: MicroPython – a lean and efficient Python implementation for microcontrollers and constrained systems

PyCom Announcements & News, (Update Firmware, etc.)


Pycom ESP32
Pycom LoPy: WLAN (old?)
Pycom LoPy: Quick reference for the LoPy (old?)
class LoRa (old?)
Python Module: Modularisierung
Python Tutorial: Module

FTDI Drivers

D2XX Drivers

Support Download
Support Download

Forum Posts

iC880 A SPI : Missing Payload in received Packet?
LoRaWAN ABP example => DevEUI
Connecting the lopy to my lorank8 gateway


How to solve the firmware update failures
Exciting open source news!
Firmware source code?


Username: micro
Password: python

Boot-Mode and Safe-Mode

Boot modes and safe boot
Safe boot

Using “The Things Network”

LoPy Usage

>>> CTRL-D
PYB: soft reboot
MicroPython v1.8.6-464-g0f843911 on 2017-02-17; LoPy with ESP32
Type "help()" for more information.

>>> import os
>>> os.uname().release

>>> os.uname()
(sysname='LoPy', nodename='LoPy', release='1.6.3.b2', version='v1.8.6-464-g0f843911 on 2017-02-17', machine='LoPy with ESP32', lorawan='1.0.0')
>>> import binascii
>>> import network
>>> import machine
>>> from network import LoRa

#  Device EUI
>>> lora = LoRa(mode=LoRa.LORAWAN)

>>> binascii.hexlify(network.LoRa().mac())
>>> binascii.hexlify(machine.unique_id())
>>> binascii.hexlify(network.WLAN().mac())
lora = LoRa(mode=LoRa.LORAWAN, sf=7, tx_power=14)

# create an OTAA authentication tuple (NWSkey, AppSKey, DevAddr)
auth = (bytes([0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX]),
        bytes([0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX, 0xXX]),
        0x69128CD3 )

lora.join(activation=LoRa.ABP, auth=auth, timeout=0)

while not lora.has_joined():
print('Trying to join LoRa network')
print('Joined LoRa Network')

s = socket.socket(socket.AF_LORA, socket.SOCK_RAW)

while True:
print('Sending Packet')
s.send('Hello from the LoPy')
print('Done sending')
import pycom
import machine
import time


button=machine.Pin("G17",machine.Pin.IN, pull=machine.Pin.PULL_UP)

def handler(button):

irq=button.callback(trigger=button.IRQ_FALLING, handler=handler)

Change Frequency

Changing Frequency region after upgrade
class LoRa

NRF51822 Bluetooth Low Energy (BLE) / Smart

nRF51822, Bluetooth Smart and 2.4GHz

  • 32-bit ARM® Cortex™ M0 CPU
  • 256kB/128kB flash
  • 32kB/16kB RAM

The embedded 2.4GHz transceiver supports both Bluetooth Smart and the Nordic Gazell 2.4 GHz protocol stack which is on air compatible with the nRF24L series products from Nordic Semiconductor.

  • Bluetooth Smart
  • Nordic Gazell 2.4 GHz (= nRF24L)

nRF24L01, Transceiver only
nRF24L01+, Transceiver only
nRF24LE1, enhanced 16MHz 8-bit 8051 compatible CPU
nRF24LU1+, enhanced 16MHz 8-bit 8051-compatible CPU


Nordic nRF51 Platform


Getting Started with nRF51822


F10643 NRF51822 Drahtlose Bluetooth Modul Networking Modul
J34 Kostenloser Versand NRF51822 BLE4.0 Bluetooth Evaluation Board 2,4G Drahtlose Kommunikationsmodul