A basic Arduino nano based portable device, having portable power, a basic display and circuitry to measure voltage, current, pulses, test components (Resistors, Capacitors, Transistors and more) and also be able to serve as a Serial Terminal and MORE.
Handheld form factor - credit card/gameboy/mobile phone sized
Input Push Buttons - 6 to 10 buttons via 1 single ADC pin
Nokia Graphics LCD - Mono, Mobile LCD for Display
Voltage Input - 0 to 50V or possibly, -50 to 50V Voltmeter (2x)
Current Input - 0 to 500mA or even possibly 1A Ammeter (FUSED)
Serial Terminal - Show incoming Serial data on screen (adjustable/auto baudrate)
Sqaure Wave Generator - basic clock generator, upto 1MHz with adjustable Duty Cycle
Pulse Counter - Basic Pulse stats - Freq, Duty Cycle, etc
Component Tester - a variant of the SemiConductor Tester
Battery Powered - Chargeable via USB
Serial Connection with PC - A basic data acquisition app on PC Side - Windows/Linux
Arduino Nano CH340
one little board which has USB to Serial and Controller and everything and stuff. from aliexpress
Nokia Mobile LCD
SPI or I2C cheap LCD from aliexpress
for signal Conditioning
Resistors Capacitors and stuff
for the circuitry...
So, we were able to do this last month but posting a log here, need much motivation for it.
First off, images.
This is the same semiconductor tester as has been shown before on hackaday and lot of other places, the German version, we had problems porting the code so we removed all previous code and started with a new repo just to test and check this out and get this done - now what remains is to get this working alongwith the other things.
We have noticed that now we are on the brink of using up ALL the memory and RAM that the AVR ATMega328 has, we are also looking at Teensy for a better and more powerful replacement as the main controller.