The Cheap-Thermocam is a low-cost thermographic image scanner. With it you can analyse your house, electrical devices, etc. and identify for example thermal lacks.
Current FLIR cameras on the market cost a few thousand dollars.
My idea was to reduce costs by using one single non-contact temperature sensor to create a thermographic image.
A cheap thermographic camera for everyone - [Link]
This project is a 8-12Vdc to +48Vdc DC-DC converter based on MC34063 switching regulator. It’s a simple project of a DC-DC converter to make a phantom power supply for professional microphones. It can deliver 15-20mA at 48VDC. It ‘s based on MC34063 DC-DC step-up, step-down and boost converter. Input is between 8-12V DC and the output +48VDC/10-20mA.
9V to 48V DC-DC Converter - [Link]
Smartphone peripheral developers are limited to RF links via Bluetooth, NFC or WiFi when they need to pass data back and forth to the device. This can add significantly to costs and stand-alone peripherals also need batteries or an adapter for power. The Quick-Jack from NXP solves both problems; it turns the standard 3.5 mm stereo audio headphone socket found on most iOS or Android smart devices into a self powered data port and provides an interface for external switches, sensors or any other external equipment.
The Smartphone Quick-Jack Solution comprises a small board, a free example app for popular smartphone OSs, and design documentation.
Smartphone port? Try the Ear Hole - [Link]
This project started out from a need to build a simple device for monitoring the CAN bus. I choose the NUC140LC1CN 32K Cortex-M0 microprocessor from Nuvoton for major reason – it has both USB and CAN peripherals.
CAN to USB Interface - [Link]
by Danny Mavromatis:
There are a lot of little details you need to think about when taking a project from PoC (proof-of-concept) to production. Most projects today have some form of onboard microprocessor and require you to flash your custom bootloader and/or program code onto it at some point. There are many ways this can be accomplished but the most common method is using an ICP (in-circuit programmer) connected to a 6-pin ICP header somewhere on the PCB. [...]
Tag-Connect! I can’t remember exactly how I found out about this neat little connector, but I’ve been using it for a while and it’s actually very useful in a production environment. They provide the footprint for many of the popular PCB design programs so placing it is very straight forward. Pretty much just swap out the traditional header for the new tiny Tag-Connect version and you’re pretty much done.
Tag-Connect: The ICP Connector That Saves PCB Space & Cost Less - [Link]
IViny is easy to use and USB based simple low-cost DAQ and measurement device for data acquisition application. It can be used quickly without any low level electronically knowledge.
- 2 channels 0 – 5V and 0 – 3V digital input/output
- 2 channels 0 – 5V 10 bit analog input
- Channel maximum current 20 mA
- ATTiny85 based
- USB supply, no need external supply
- V-USB based communication
- PC user interface
- 150 S/s (it will increase with future next firmware upgrade still under development)
- 50 mm x 33 mm x 17 mm
IViny Compact Data Acquisition Device - [Link]
Jasper @ jasper.sikken.nl writes:
I designed an electric load. Using an Arduino Nano, the load can be programmed, and the voltage and current are measured. You can set a constant current (CC), a constant power (CP), or a constant resistance (CR) load by simply typing it in to the Arduino Serial Monitor. The circuit is designed for up to 30V, 5A, and 15W. An opamp, a mosfet, and a small sense resistor form the constant current circuit. The current is set using a DAC. Two other opamps measure the power supply voltage and the current. The circuit is powered from the Arduino USB voltage. I reflow soldered the board using the hacked toaster oven at the hackerdojo. Here are pictures of the reflow soldering process
Arduino based programmable load - [Link]
sameer @ sgprojects.co.in writes:
Here I’m introducing a simple and very useful project to store the running time of any device. The running time in minutes can be seen on a 7-segment display and can be reset at any time to it’s initial zero condition by pressing a switch. It can be easily installed by connecting it in parallel with any device.
Digital Time Keeper - [Link]
by praveen @ circuitstoday.com:
Digital code lock or digital combination lock are a type of digital locks where a combination of digits/characters or both are used for unlocking the lock. This article is about a simple digital code lock using arduino. Here the code consists of a combination of digits from 1 to 6. There are separate keys for locking and unlocking the system. The system can be unlocked by pressing the unlock button after entering the correct combination of digits. A hex key pad is used as the input device. Only the first two rows of key (1, 2, 3, A, 4, 5, 6, B) are used in this project. A is used for locking the system and B is used for unlocking the system. Read this article Interfacing hex keypad to arduino for knowing more about hex keypad and its interfacing to the arduino. The circuit diagram of the digital code lock using arduino is shown in the figure below.
Simple digital code lock using arduino - [Link]