HarryA got a reaction from QiHall in Boolean Algebra
= KNP + KLPQ + LMNP + LMPQ + KMNQ + KLMQ + LMNQ + LMQ
K * N+LQ + LM*(N+LQ)
K * N+LQ = KN+KLQ and LM*(N+LQ) = LMN+LMQ
for the : (KN+KLQ+LMN+LMQ)
for the fourth line multiply the third line by P and then by MQ from (P+MQ)
HarryA got a reaction from Guy Shemesh in Help identifying electronic components
If you compare your board with the one on Ebay that one looks like the better board.
You may gain some insight by comparing the P6? on your board with the three in the schematic and see if it connects the same as one of them. This is the schematic of the Viber12a in a battery charger.
HarryA got a reaction from Zahid Gul Khan in Desktop Pick and Place Machines
There is information here on Visual Servoing that maybe helpful; particularly the numerous references at the end of the article.
If you look at a bmp file of a smd image like this one (I could not find an image of the bottom of a smd).
You can see the white background as FF FF FF and one scan line across the component highlighted. So in theory one could find the four corners and calculated the rotation and any x y offset. In bmp files the image is inverted.
If you only need the rotation then only part of one edge would be required to calculate it I believe.
HarryA got a reaction from Tim Swait in Intelligent power switch ESP32
The IPS6021 is readily available from China via Ebay. There is a supplier in the UK also:
HarryA got a reaction from Youssef_Hany1 in Rc car
Perhaps the chip is over heating with to much current draw? Try connecting only two motors to see what happens.
For the l298n chip itself:
For the IO Peak Output Current (each Channel)
– Non Repetitive (t = 100ms) 3.0A
–Repetitive (80% on –20% off; ton = 10ms) 2.5A
–DC Operation 2.0A
TOTAL DC CURRENT UP TO 4 A
HarryA got a reaction from aleksczajka in Need Help: Bluetooth External Camera controlled by iPhone app
Perhaps? To big?
" This Fujifilm FinePix digital camera has Bluetooth connectivity for wireless media transfer. "
HarryA got a reaction from albarh18 in I need a critical help in designing a magic toy
You ask for a lot!
Start with Ebay.com for transmitters and receivers: see:
HarryA got a reaction from HaddyS in Transformer Watts
I enlarged the image off the Amazon.com but could not read it
...but ebay.com has a readable image
120v @60hz 300ma
HarryA got a reaction from Katelynne in Transformer for voltage booster?
You points are well made; thanks.
On day one I found two voltage boosters on Ebay that gave more than 100 volts so I ordered both of them from China. The first one I received was a 12v dc to 200 v dc. After connecting it up and adjusting it for 200 v I put a 100k resistor across the output and got 2 volts output! It took a one mega-ohm load to keep 200 v.
The second one (12v dc to 220 v ac) works well. I connected it to the 220v to 120v step down transformer and into a full wave bridge rectifier with a 100mfd capacitor and got 140 v dc; 9.6 volts input. With a 8.4 v NiMH rechargeable battery I get 128 v dc.
So I am happy with that and very surprised that the 50/60 hertz transformer works at all!