Electronics For You » All Posts https://www.electronicsforu.com/forums/feed/ Wed, 11 Sep 2024 17:48:40 +0000 https://bbpress.org/?v=2.6.11 en-GB https://www.electronicsforu.com/forums/topic/can-we-know-the-directions-of-magnetometer-and-how-to-calibrate-it-to-a-compass#post-147454 <![CDATA[Reply To: Can we know the directions of magnetometer and how to calibrate it to a compass]]> https://www.electronicsforu.com/forums/topic/can-we-know-the-directions-of-magnetometer-and-how-to-calibrate-it-to-a-compass#post-147454 Tue, 03 Sep 2024 06:16:39 +0000 Ashwini Sinha The magnetometer will show the data in degree from magnetic north of earth. Put the IndusBoard on flat surface and rotate it you will ge a 0 degree point that is north of Indusboard

]]> https://www.electronicsforu.com/forums/topic/is-there-a-scope-to-make-a-diy-weather-balloon-project-based-on-the-indusboard#post-147250 <![CDATA[Reply To: Is there a scope to make a DIY weather balloon project based on the indusboard]]> https://www.electronicsforu.com/forums/topic/is-there-a-scope-to-make-a-diy-weather-balloon-project-based-on-the-indusboard#post-147250 Fri, 30 Aug 2024 06:17:33 +0000 Ashwini Sinha For weather balloon you might also need the Long range RF communication module Either LoRA or SIM800l using celleluar network

]]> https://www.electronicsforu.com/forums/topic/is-there-a-scope-to-make-a-diy-weather-balloon-project-based-on-the-indusboard#post-147251 <![CDATA[Reply To: Is there a scope to make a DIY weather balloon project based on the indusboard]]> https://www.electronicsforu.com/forums/topic/is-there-a-scope-to-make-a-diy-weather-balloon-project-based-on-the-indusboard#post-147251 Fri, 30 Aug 2024 06:17:33 +0000 Ashwini Sinha For weather balloon you might also need the Long range RF communication module Either LoRA or SIM800l using celleluar network

]]> https://www.electronicsforu.com/forums/topic/is-there-a-scope-to-make-a-diy-weather-balloon-project-based-on-the-indusboard#post-146850 <![CDATA[Is there a scope to make a DIY weather balloon project based on the indusboard]]> https://www.electronicsforu.com/forums/topic/is-there-a-scope-to-make-a-diy-weather-balloon-project-based-on-the-indusboard#post-146850 Thu, 22 Aug 2024 13:17:52 +0000 Maneesh Reddy what could be the potential list of materials and is it feasible to make a good weather balloon with the indus board coin

]]> https://www.electronicsforu.com/forums/topic/can-we-know-the-directions-of-magnetometer-and-how-to-calibrate-it-to-a-compass#post-146849 <![CDATA[Can we know the directions of magnetometer and how to calibrate it to a compass]]> https://www.electronicsforu.com/forums/topic/can-we-know-the-directions-of-magnetometer-and-how-to-calibrate-it-to-a-compass#post-146849 Thu, 22 Aug 2024 13:16:19 +0000 Maneesh Reddy Do we have a way to decide which way the magnetometer is facing towards when using the DIY airtag project.

]]> https://www.electronicsforu.com/forums/topic/how-much-current-esp-32-or-esp-8266-gpio-pins-can-provide-2#post-146673 <![CDATA[Reply To: How much current ESP 32 or ESP 8266 GPIO pins can provide]]> https://www.electronicsforu.com/forums/topic/how-much-current-esp-32-or-esp-8266-gpio-pins-can-provide-2#post-146673 Tue, 20 Aug 2024 02:05:38 +0000 ESP32 GPIO Pins:
Maximum current per GPIO pin: 40mA.
Total maximum allowed current: 120mA (sum of all GPIO pins).
Note: While a single GPIO pin can output 40mA, prolonged high-current use may lead to overheating or damage to the chip. It is recommended to keep the current below 20mA for stability.
ESP8266 GPIO Pins:
Maximum current per GPIO pin: 12mA.
Total maximum allowed current: 70mA (sum of all GPIO pins).
Similar to the ESP32, it’s advisable to limit the current to a lower value in practice to extend the chip’s lifespan and prevent overheating.
So, the ESP32 GPIOs can provide higher current, but caution should be exercised to avoid damaging the chip.

]]> https://www.electronicsforu.com/forums/topic/newbie-needs-help-troubleshooting-a-bob-beck-blood-electrification-circuit#post-143130 <![CDATA[Reply To: Newbie needs help troubleshooting a Bob Beck blood electrification circuit]]> https://www.electronicsforu.com/forums/topic/newbie-needs-help-troubleshooting-a-bob-beck-blood-electrification-circuit#post-143130 Fri, 21 Jun 2024 06:29:46 +0000 EFY Bureau Kindly email all the information, photos and PDFs at onedit@efy.in

  • This reply was modified 1 month ago by EFY Bureau.
]]> https://www.electronicsforu.com/forums/topic/how-can-i-publish-my-articles-or-diy-projects-for#post-142361 <![CDATA[Reply To: How can I publish my articles or DIY projects for…]]> https://www.electronicsforu.com/forums/topic/how-can-i-publish-my-articles-or-diy-projects-for#post-142361 Tue, 11 Jun 2024 18:10:41 +0000 thanks alot for this information…

]]> https://www.electronicsforu.com/forums/topic/newbie-needs-help-troubleshooting-a-bob-beck-blood-electrification-circuit#post-142100 <![CDATA[Newbie needs help troubleshooting a Bob Beck blood electrification circuit]]> https://www.electronicsforu.com/forums/topic/newbie-needs-help-troubleshooting-a-bob-beck-blood-electrification-circuit#post-142100 Wed, 05 Jun 2024 19:54:28 +0000 DL57 I purchased this in kit form a while back, and actually got it working. But then one day I found a couple of wires had come off the circuit board, and when I tried to resolder them onto the pcb it overheated and damaged one of the copper traces. I tried to get the seller to help me, but he told me that he could not, because he was travelling. So since a couple of years ago I have not been able to use this device, and due to health challenges with which this could have been useful, I really need this working. I have the manual in .pdf format, along with various photos showing the circuit with my attempts to colour the traces, and the rest showing my terrible soldering ;), but being new to this forum I don’t know how to upload them?
I recently acquired a fairly good auto-ranging digital multimeter, so now I want to see whether I can get the device working again with your help, but in terms of finding the fault, I don’t know where to start 😉

]]> https://www.electronicsforu.com/forums/topic/how-to-control-3-phase-induction-motor-using-gt60n321-igbt#post-140320 <![CDATA[Reply To: How to control 3 phase Induction motor using GT60N321 IGBT]]> https://www.electronicsforu.com/forums/topic/how-to-control-3-phase-induction-motor-using-gt60n321-igbt#post-140320 Mon, 06 May 2024 04:14:15 +0000 dhruv1253 ​Guys, please consider the attached images of circuit diagram for your reference. we tried to simulate in proteus, in which motor runs. but physically we observed some issues with inverter module. Its output is not as expected. Rectifier is working fine. Rectifier output is 550 V. which is given to collector of high side IGBTs.

​Expected output at Inverter output side is 400V AC. but we are getting only 10-20Volts output.

while handling single IGBT, issue we found with GT60N321 IGBTs are:-

1) When we give 10V Gate, 24V Collector, then we get only 12-13V output at Emitter

2) When we give 19V Gate, 24V Collector, then we get 23V output at Emitter

but

3) When we give 19V Gate, 50V Collector, then still we get 27V output at Emitter. which should not have happened. We expect 48V approx output at emitter.

Output are being measured using multimeter. In practical we are giving 6 signals from Arduino to 6 IGBTs.

​Arduino code has been attached for your reference. Go through the following link

https://drive.google.com/drive/folders/1xPWNTgpzAg_rWaKuolom9bMd_bKOaOKf?usp=drive_link

]]>