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  1. 2 points
    Thanks for sharing your project with us. Could you give more details on the control board?
  2. 1 point
    HarryA

    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. https://en.wikipedia.org/wiki/Visual_servoing 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. smd compoint.bmp
  3. 1 point
  4. 1 point
    You're welcome. it doesn't have a controller. the intention was to find the easiest and cheapest solution. Please follow the video and provided resources.
  5. 1 point
    HarryA

    Intelligent power switch ESP32

    The IPS6021 is readily available from China via Ebay. There is a supplier in the UK also: https://www.ebay.com/itm/IPS6021RPBF-Intelligent-Power-Switch-High-Side-Active-High-1Output-5-5V-TO-252-5/152755283380?hash=item2390eca5b4:g:U~MAAOSwqXxdNtVK
  6. 1 point
    admin

    0-30V 0-3A Latest Data

    I am attaching a Troubleshooting FAQ’s I found for this power supply. It summarizes the 150 pages of an old thread into a single document. Hope this helps get some questions answered. 0-30V 0-3A Bench Power Supply Unit Troubleshooting FAQ’s.pdf
  7. 1 point
    admin

    0-30volt laboratory power supply part list

    You will have to open the Eagle schematic with the software and then you will see that the values are linked to the reference number of the parts. This way it will be easy to identify.
  8. 1 point
    audioguru

    0-30 volt stailized power supply

    If the transformer is rated at 24VAC/2A then it provides a maximum power of 24V x 2A= 48VA. But if the output is 30V at 2.0A then the load uses 30V x 2A= 60VA plus heating power. The peak of 24VAC is 40V which feeds the bridge rectifier which charges the main filter capacitor to the peak voltage minus the rectifier forward voltage. So then the transformer must produce 40V at 2.0A= 80VA which is much more than the overloaded 48VA. 80VA/24V= 3.33A, not 2A. For a regulated output of 30.0VDC at 3A then I recommended using a transformer rated at 28VAC/4.3A. For an output current of 3A then you must look at how much heat is produced by the single output transistor which is why I recommended using two output transistors to share the heat. Edited with strike-throughs.
  9. 1 point
    AVpassion

    Safe Power for electronics

    I’m in the process of a move to an area which I’ve been told has regular power fluctuations and a few power cuts as well. I have been researching how to provide clean and safe power to my electronic components which would include a Denon receiver, 2 Power amps, a Blu-ray player, Projector, gaming console etc. I am contemplating the below options: Option A: Mains to a Voltage Stabilizer to Power Condtioner(Furman) to the electronic components Option B: Mains to an Online UPS(APC) to a Power Condtioner(Furman) to the electronic components Would one of these work? Or is there a better solution to consider?
  10. 1 point
    audioguru

    0-30V 0-3A Latest Data

    The 24VAC transformer probably produces 25VAC with a light load on the project. Then its rectified and filtered output is +34V and -5.6V which power the opamps. At times the voltages are higher. Your transformer will be overloaded if its power rating is 105VA or less (24V at 4.4A).. The old TL081 opamps have an absolute maximum allowed supply of a total of only 36V so they will not last long. Replace the opamps with TLE2141 opamps that have a maximum allowed supply of 44V. Many of the resistors and the driver transistor in the original project are overloaded. Upgrade them. The main filter capacitor C1 value is much too low, upgrade it.
  11. 1 point
    Holy Hathaway

    555 timer

    The 555 timer is a medium-sized integrated circuit developed by Signetics in 1972 to replace mechanical timers. It is named after the input is designed with three 5kΩ resistors. This circuit later became popular in the world. At present, there are four popular products: two BJTs: 555, 556 (with two 555); two CMOS: 7555, 7556 (containing two 7555). The 555 Timer is a mid-scale integrated device that combines analog and digital functions. It is called 555, which is usually fabricated by bipolar (TTL) process. It is called 7555 by complementary metal oxide (CMOS) process. In addition to single timer, there is corresponding double timer 556/7556. Its power supply voltage range is wide and can operate from 4.5V to 16V, the 7555 can operate from 3 to 18V, and the output drive current is approximately 200mA, so its output is compatible with TTL, CMOS or analog circuit levels. The 555 chip is an extremely versatile chip with up to hundreds of different applications including time-base timing or switching and voltage controlled oscillators and regulators. For those who have been exposed to digital or analog circuits, the 555 chip is definitely a classic. With its low cost and reliable performance, it is widely used in various electrical appliances, including instrumentation, household appliances, electric toys, and automatic control. Its various pin functions are as follows: Pin 1: external power supply negative terminal VSS or ground, under normal grounding. Pin 2: Low trigger terminal TL, this pin voltage is valid when it is less than 1/3 VCC. Pin 3: output OUT. Pin 4: directly clear the terminal RST. When this terminal is connected to a low level, the time base circuit does not work. At this time, regardless of the level of TL and TH, the time base circuit output is “0”, and the terminal should be connected to a high level during normal operation. Pin 5: CO is the control voltage terminal. If the pin is externally connected, the reference voltage of the two internal comparators can be changed. When the pin is not used, the pin should be grounded into a 0.01μF (103) ceramic capacitor to prevent high frequency interference. Pin 6: High trigger terminal TH, this pin is valid when the voltage is greater than 2/3 VCC. Pin 7: discharge end. This terminal is connected to the collector of the discharge tube T and serves as a discharge pin for the capacitor at the time of the timer. Pin 8: external power supply VCC, bipolar time base circuit VCC range is 4.5 -16V, CMOS type time base circuit VCC range is 3-18V, generally 5V.
  12. 1 point
    admin

    BMS Charger for 18650

    This is the basic connection of BMS charger circuit. Do you need the scheme for the charger it self maybe?
  13. 1 point
    arielrizuly

    BMS Charger for 18650

    Need info for scheme bms 12v I -[===]+ -[===]+ -[===]+ l I -[===]+ -[===]+ -[===]+ l I -[===]+ -[===]+ -[===]+ l I. I I. I I. I 12v - 12v +
  14. 1 point
    The board is made very precisely, it's clean and very pleasant to touch. Markings on the silkscreen layer are very good readable. Soldering does not cause trouble, tin adheres very well to soldering points with a small amount of flux. It is also worth mentioning that the PCB is very robust to desoldering. The company is very solid, although you order 10 pieces, you get at least 1 PCB more for test, prototype, present, etc. When I signed up for an account, I also got a $20 coupon for free. Excellent construction and assembly work done by PCBgogo.No problems encountered, highly recommended.
  15. 1 point
    HarryA

    Power supply circuit ideas

    If you do not need SMD perhaps "The LT138A/LT338A (LM138/LM338) series of adjustable regulators provide 5A output current over an output voltage range of 1.2V to 32V." The LM338 is about 1$ each on ebay.
  16. 1 point
    Hahahaha. I promise i will make a better one.
  17. 1 point
    soldertools1

    BGA rework Process?

    Hey, I also found a training institute and an article about BGA Rework Process. Follow the given link below to get a clear understanding of reworking BGA process: http://www.solder.net/services/bga-rework-services/
  18. 1 point
    Soldertraining

    Power supply

    A power supply is an electronic device which supplies electric energy to an electrical load. Can anyone tell me what is the minimum power required 1 ton AC.
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