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The circuit and PCB have been produced and tested and basic code is available on github. See the project site on hackaday.io for more information about the project.
Simple count up timer for coffee machine triggered on mains voltage detection using CT on the coffee machines solenoid valve. CT is SCT-013-005
Note this is a slightly modified layout to the first board to space out the components better to allow easier soldering also change ICSP to staggered layout (circuit is identical)
Simple count up timer for coffee machine triggered on mains voltage detecti...
This is a basic firework launch controller based around an arduino nano/ micro. It can also be used to controll any dc appliance in a timed sequence, up to 24A/10A. The boards are designed with osome costumizability, as it is'nt a completeed project (there will more then likely be a v3.0) and has a lot of unused pins on ics and connectors.
maualy fire any channel
This is a small pcb that is designed to be used on an electric go-kart to display a stopwatch, motor RPMs, and cart speed as well as record this data on an SD card with a time stamp for analysis. The project is Arduino based and is ran off of 7-59 VDC or directly from a 5V source through any of the 5V or VIN pins on the data logger shield (this is not a protected input). It is designed to have w...
8051 Microcontroller based Temperature Data Acquisition and Data Logger, using DS18B20 as temperature sensor.
DS18B20 is a precision temperature sensor with digital IO, A 8051 core MCU (AT89c51/AT89S51) is used to collect the data. The data can be saw at a 1602 LCD or send to the computer via RS232 interface with MAX232 IC.
1. For L/C meassure by LM311 and oscillation circuit.
2. For FREQ meassure by special input circuit with a capacitive coupling
3. For C meassure by 556N freq to C - range 1-1000 pF
4. For C meassure by 556N freq to C - range 1-1000 nF
![multi freq meter V_02 cover.jpg](//image.easyeda.com/pullimage/YyWhE1CwRVAFl7XpCxxjQZ6YGdweU7GAEVO5MXL3.jpeg)
![multi freq meter V_02.jpg](//image.easyeda.com/...