As mentioned in the last log, Thermopile matrix sensors sound like a very promising idea so did a short search wich ones would be available (see table below). But the would require at least some kind of image recognition which makes them complex to use....
The more I read about the TI-57, the more I wanted to fix mine. Of course, these are easily found on a-large-well-known-online-auction-site for modest prices - typically $40 or less. Like most hobby projects, my goals were entirely devoid of practicality. ...
Rcl57mcu wants a 3.5-5V supply. So, even if I could resurrect the dead BP-7 NiCd pack/lid, it won’t work for this upgrade. I will instead recycle the tried-and-true USB charged 3.7V LiPo supply that I’ve used for HP Classic, HP-28S, and TI-58/59 supply...
This is a switch-mode PSU, so the mains is rectified to around 400 volts DC inside. Extra care is required to avoid touching this dangerous part of the PCB. This can be remote controlled by GPIB, RS232, USB or Ethernet. The user manual is here: CPX400S+SA+SP_Instruction_Manual-Iss9.pdf...
The display driver includes a command to invert the display and I have included a facility to choose an inverted display in the Settings app. I am still undecided as to which setting is more readable, however after implementing the analog clock app shown...
Once we got back to my apartment, the fatigue began to set in. It had been a long day already, with nonstop running around. I asked Julia if she could wait for a few minutes while I rested. She was totally understanding and didn't give me...
The serial port pin-out is cunning designed so that you can connect to a PC with a simple modem cable, or daisy-chained with other TTi devices. 1 Power to optional PC-02 2 TXD Transmitted data from instrument to PC 3 RXD Received data to instrument from...
I did another test with the rev1 prototype, this time only measuring voltage, and bringing it all the way to the maximum voltage of 60V. Again I am doing calibration and comparison to my Fluke 101 Multimeter. This has a problem as the Fluke 101 does...
Sometimes, when making your own devices on microcontrollers, there is a need to display huge amounts of information on a display and to use a bigger screen for ease of perception. Unfortunately, there are no ready-made and budget-friendly solutions for...
Using HTTP(S) AT Commands, accessing to HTTP server,SerialUSB.println("Maduino Zero 4G LTE CAT1 Test Start!"); SerialUSB.println("Wait a few minutes for 4G star"); delay(3000); sendData("AT", 1000, DEBUG); delay(5000); sendData("AT+CICCID", 1000, DEBUG);...
It's have simple schematic, for save pins I used Charlieplexing(35 components in total): https://en.wikipedia.org/wiki/CharlieplexingIn this project i use for charging 12 light sensor BPW34S, on clear sun one cell make 0.5-0.6 V and ~2 mA, connect its...
Some days ago a friend told me about the heaters from Vevor and after some search I found this page very promising: http://afterburner.mrjones.id.au/ So I hoped the Vevor ones have the same protocol structure and things would be quite easy....
Starting project by learning more about eggs.. I'd like to figure out how to create a nice 3D printed egg shape that can hold a circuit board, battery, and motor assembly. I'll start by printing off some free variants from thingiverse. Ultimately I want...
First, we need to prepare the environment for ESP32 development board programming in Arduino, and you can check this guide.RadioLib library is a wireless communication library. It supports a variety of wireless communication modules, including LoRa,...
Insert two AAA batteries into the Lora Temperature/ Humidity/ Soil Moisture Sensor V3 battery compartment, burn the code into the ESP32S3 based 4G LTE module, and open the serial port, when ESP32S3 based 4G LTE module successfully...