• PCB/Board designs, Product Reviews
      4 min | 127

      #WAVE2: an Ensemble Yourself Oscilloscope (DSO)

      PCB/Board designs, Product Reviews | 4 min | 127


      diy
      oscilloscope
      product review
      soldering
      wave2

      Last month, I published a review of the DSO138. This time, I put together the WAVE2 (15801K) and I review it in this article. The WAVE2 is a 2-channel portable oscilloscope design by JYETech for a hobbyist. It has a resistive touch screen display, X-T (signal-time) / X-Y (signal-signal) plotting functionalities, memory (4 blocks), measurement functionalities (V -max, min, avr, pp, rms-, frequency, duty cycle), serial interface and can be powered using an external 5V source (micro ...

    • PCB/Board designs, Product Reviews
      3 min | 154

      #DSO138: an Ensemble Yourself Oscilloscope (DSO)

      PCB/Board designs, Product Reviews | 3 min | 154


      dso138
      dyi
      oscilloscope
      product review
      soldering

      A few months ago, I was looking for a small digital signal oscilloscope (DSO) module, and last week I got a DSO138 DIY kit from DigitSpace. The oscilloscope is originally from the company JYE Tech, but as usual, there are a lot of copies.

      The oscilloscope has a bandwidth of 200kHz, a maximum sampling rate of 1MHz and a maximum input voltage of 50Vpk that are sufficient for the applications that I am programming using ESP32 boards (more details here).

      In this article, I include a qui...

    • Product Reviews
      5 min | 4415

      #Xiaomi CMSXJ11A: an IP-Camera with built-in battery

      Product Reviews | 5 min | 4415


      camera
      ip camera
      product review
      security
      xiaomi
      xiaomi ecosystem

      This article evaluates three low budget Wi-Fi cameras that I buy from e.g. banggood.com and aliexpress.com but I will focus most of the analysis on my last acquisition the XIAOMI Mijia CMSXJ11A.

      All cameras in this review are Xiaomi (not exactly built by Xiaomi) and can be connected to the application Mi Home (apple/android). Moreover, you need to select the region to China (Mainland) in the application, otherwise you are not going to find the devices. This has a main disa...

    • Product Reviews, Single-board Computers
      6 min | 12414

      #Orange Pi Zero LTS: An 'upgraded' alternative to the old Raspberry Pis

      Product Reviews, Single-board Computers | 6 min | 12414


      armbian buster
      benchmark
      development boards
      n-queens problem
      performance
      raspberry pi

      The Allwinner H2+, which integrates four ARM-Cortex A7 cores that can clock up to 1.2GHz, is powering the Orange Pi Zero LTS. The tiny board, which measures just 52 x 46 mm, features 802.11 b/g/n Wi-Fi, Ethernet, up to 512 MB of RAM, USB 2.0 Type-A and a microSD card slot. There is also a 26-pin unpopulated GPIO header along with a 13-pin header for a headphone, USB 2.0, TV-out, microphone and IR signals.

      This board is the next generation of the Orange Pi Zero th...

    • Product Reviews, Single-board Computers
      6 min | 5837

      #Rock Pi S: a tinier version of the Raspberry Pi with Alexa functionalities

      Product Reviews, Single-board Computers | 6 min | 5837


      Alexa functionalities
      debian stretch
      development boards
      OS image
      performance
      Radxy
      Rock Pi S

      Radxy, the company behind the Rock Pi 4 is back! A couple of days ago, I've received the Rock Pi S (see Fig. 1), a miniature developer board that measures just 38 x 38 mm. The board is powered by the Rockchip RK3308 SoC, which integrates four 64-bit ARM Cortex-A35 cores (Ultra-High-Efficiency). Each of the cores reaches up to 1.3 GHz. The SoC also has a built-in voice activity detector (VAD) for use with IoT and smart voice applications.

      Despite its tiny size, the Rock Pi S in...

    • General, Product Reviews
      5 min | 2565

      #Timeular: Tracking your time using an Octahedron

      General, Product Reviews | 5 min | 2565


      access to data
      bluetooth
      getting things done
      octahedron
      product review
      time tracker
      time tracking system
      timeular

      First of all, this article is a product review which was/is not supported by Timeular GmbH or similar. I bought the product two weeks ago, because I wanted to test it. I missed out the Kickstarter campaign (2016) and the regular price for the octahedron was too expensive for me.

      Timeular application: Analytics Dashboard
      Fig. 1: Timeular application

      This summer, the tracker is on sale with up to 50% discount and I bought the basic plan. I got an octahedron -called tracker- which connects to the Timeular application (Mac, Win...

    • Home Automation, Product Reviews, Raspberry Pi
      2 min | 6814

      #Zigbee: Reading Xiaomi Sensors with a Raspberry Pi (no Xiaomi gateway needed!)

      Home Automation, Product Reviews, Raspberry Pi | 2 min | 6814


      aqara
      docker
      hass.io
      home assistant
      home automation
      product review
      raspberry pi 3 B plus
      xiaomi gateway
      xiaomi sensors

      I've been very busy the last weeks. I moved to a new apartment and I was living between moving boxes. Four days ago, I managed to put my desk together and now I have some time (not a lot) to write a new article.

      Last month I've received from GearBest two Aqara sensors:

      • Aqara Cube - internal motion sensors (gyro + accelerometers)
      • Aqara humidity, temperature and air pressure

      These sensors use Zigbee and I connected them to a Raspberry Pi running Raspbian OS and a dockerized version o...

    • MicroPython, Product Reviews
      5 min | 8589

      #MAiX Dock & MicroPython: Hands-On with low power AI at the edge

      MicroPython, Product Reviews | 5 min | 8589


      aiot
      edge device
      low port ai
      low power ai
      maix dock
      micropython
      object classifier
      sipeed

      This week, I received from Seeed Studio a MAiX Dock to review it. The main board of the kit includes a Sipeed M1w which is a compact module like the ESP32 but based on the Kendryte K210 dual core RISC-V processor. It is designed for low power artificial intelligence workloads, such as face detection, object recognition, or audio processing. There are two type of modules: the Sipeed M1 and M1w, the last one includes WIFI connectivity.

      The main features of the MAiX Dock boards are:

      1. Display I/F – A...
    • M5Stack, MicroPython, Product Reviews
      3 min | 4474

      #Review: Meet the M5Stack FIRE

      M5Stack, MicroPython, Product Reviews | 3 min | 4474


      esp32
      m5stack
      m5stack fire
      micropython
      prototyping
      psram
      review

      This month, I received the M5Stack FIRE development kit with a PLC base kit from Banggood to review (see Fig. 1). After using it, I can affirm that the M5Stack takes an alternative approach to ESP32 prototyping, because the resulting projects are almost simultaneously finished products. This is possible because the board is housed in a stylish and robust hosing with graphics display, buttons, microSD card slot, USB-C port and speakers. I tested the M5Stack FIRE development kit, and the board i...

    • Product Reviews
      1 min | 675

      #Review: InkDrop.tech

      Product Reviews | 1 min | 675


      blockchain
      ether
      product review
      uncensorable social network

      Hi there! the guys at InkDrop need some stars on GitHub! Follow the project and stayed tune! What? You don't know about InkDrop.tech?! Ok, no problem: Here you got a description!

      GitHubRepository: inkdrop-app

      InkDrop

      InkDrop is an open, easy-to-use and uncensorable social network. It is an open source project and can be considered the blockchain community’s answer to the major, privacy invading platforms we depend on today.

      Today’s social networks are centrally controlled & moderated and they don’t pass back the proceeds to the creators. They rely on business models that are irreconcila...