I need a power supply for a 3D printer, my Kossel XL. I figured that a cheap LED supply would suffice, so long as I over rate it, and have a wide margin for safety, i.e. 30+ A.
So, how much is a SMPS in Bangkok? Cheaper than eBay or Amazon? Let’s find out…
Continue reading SMPS in BKK
12 V, 3 A power supply, 20 baht, doesn’t work
Continue reading Fixing an LED supply
I was given a number of LED strips from flourescent tubes the other day. After a quick look, I noticed that the 36 LEDs were grouped in bunches of 12. I went an got a 12 V 2 A LED power supply, but only some of the LEDs flashed. So, more investigation was required…
Continue reading LED strips from fluorescent tubing
After watching Balance Charging: Can you parallel charge?, I realised that I needed a clamp meter. But which one?
I had already purchased a UNI-T UT71D DMM, see Choosing which Multimeter to buy, and I was very happy with it, so the UNI-T clamp meter seemed a logical choice. Everyone seems to have the UNI-T 210E. However, there are a myriad of other options.
Continue reading Feeling the need to clamp
Following on from GhettoVaper – an extended GhettoVape III, I thought that I would add, if possible, the ability to balance charge the LIPos via a micro USB port. However, as the battery configuration is 2P, and not 2S, it may not be possible.
This time we are looking at PCB chargers, and Battery Management Systems (BMS).
This blog leads on from the blogs Flight Controllers, see the section on APM/Additional Required Extras, (in particular Safetly Use CLONE APM Power Modules), as well as Low Voltage Warning for CC3D. There are varying reports that claim that these devices can pass the full battery voltage to the flight controller and fry it, but there are also others that say that this is scaremongering – so who is telling the truth? Also there are cheaper clones versions that lack certain components. This article explores both of these points.
Continue reading APM Power Modules
Following on from B6 based chargers, I managed to fry my SkyRC B6 Mini LiPo battery charger whilst charging a 3S LiFe battery. Now I just get an error message whenever I initiate a charge cycle.
Continue reading B6 “Cell Number Incorrect”