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  • MBee IOT 7080G

  • **Overview** It is designed for applications that need low latency, Low throughput data communication in a variety of radio propagation conditions. Due to the unique combination of performance, security and flexibility, the SIM7080G module is ideally...
  • Wireless MCU platforms

  • ESP32 The ESP32 development boards are not without their problems.  Why keep using them anyway?  The ESP32 IC only costs €2.31/pce on Digikey.  Design a decent breakout board and done! Well, if you don't want to design your own...
  • Build error : What's wrong? : Help me!

  • root@UbuntuServer:/home/ymatsui/RPi_Pico_WAV_Player/build# llTotal 292drwxr-xr-x  9 root root   4096 11/6 01:34 ./drwxr-xr-x  9 root root   4096 11/5 18:49 ../-rw-r--r--  1 root root  20615 11/6 01:34 CMakeCache.txtdrwxr-xr-x ...
  • Sym-1 plus EPROM

  • One of the popular chip formats in the 70's and 80's were the ubiquitous EPROMs (Electrically Programmable Read Only Memories). They had very good memory density at the time and were accessible technology for hackers and OEMs alike. They had the advantage...
  • In-circuit testing using Intel HEX file components

  • Some background... The main purpose of my Intel HEX project was to: Check how difficult it is to create non-CPU controllers using microcodeImprove my microcode compiler based on real projectGive me a tool for priming memory of FPGA-based computers when...
  • Aviation Dosimetry in Africa

  • The RPiRENA-based active dosimeter This particle detector works on the same principles as previously assembled dosimeter prototypes. Here, the detection system draws its power from the 3.3 V and 5 V...
  • Philips MiniVac Battery Conversion

  • Philips MiniVac A couple of years back a bought a Philips FC6149 MiniVac vacuum. The performance of the vacuum quickly diminished and currently it is barely operating. I found a nice post of Jasper Sikken where he upgraded his vacuum. Although the post...
  • A Life in the Day of MorningStar

  • I've led an incredible life, one too incredible to keep telling, so I'm putting it all here in brief. Buried among the rest of my stuff it will tell my story until I'm ready to write my book. One day I will, but until then. Born Jan 1967, same year as...
  • STONE TFT LCD + ESP32 +MEDICAL VENTILATOR

  • The novel coronavirus has caused nearly more than 80 thousand confirmed cases nationwide, and the respirators and respirators are in short supply in recent months. Not only that, but the situation abroad is also not optimistic. The cumulative number...
  • Low end MCU Selection

  • Requirement low power : 3V3 or lower, not 5V powered at least 7 GPIOs, 9 preferred.  We don't want to read the status of the switches with an ADC. as small as possible cheap easy to solder Availability : 2nd sourced PlatformIO / Arduino support...
  • EPROM2764 - Hacked

  • Programming 2764 EPROM with a Mega2560, SD card reader and 5-12V Buck converter If you have ever wondered what it would be like to have a real retro -computer-nerd experience, then maybe programming EPROMs will fit the bill for you. Since the late 60's...