BBB based heating controller
[22 Aug 2016]
I fixed the ULN2803 package and GND on P20. Still need to investigate if there is a pull down resistor needed for Q1
Issues found during assembling the PCB:
- ULN2803 package is incorrect - it should be SOIC18. I will correct the PCB soon
- GND pin in the P20 5V/12V connector is not actually connected to GND
- The heartbeat LED is on...
open base of Q2 == IG
wave gen. == LOCK ACT
A module to follow a line based on the input from a phototransistor
Vactrol bandpass filter with F,A, Q stored in Arduino Mega
This board is a simple counter. When the signal is set'high' the clock will increment.It is a mod 10 counter
Current Limited Variable DC Supply
This is the brain responsible for setting the seconds, mins, hours as well as determining the freq that they should change at.
A Positive and Negative (+-)2-15V Voltage Regulator Schematic